DSpace Colección :

Evaluación de la eficiencia de diferentes modelos de trampas para polen disponibles en el mercado, que están al alcance de los productores apícolas.

2025-10-02T13:57:56Z

Título: Evaluación de la eficiencia de diferentes modelos de trampas para polen disponibles en el mercado, que están al alcance de los productores apícolas. Autor(es): Bascur, Daniel Hernán Abstract: The beekeeping activity at Comarca Andina is developed as a complementary activity from others, it is usually held by small producers who develop it in a non – industrial, traditional way, getting honey as only and main product from beehives, not considering diversification. The activity itself allows a wide range of resources that we can get from the hive which would generate a higher money income, providing the possibility of economic/ financial stability for small/familiar industries. Pollen is part of the diversity of products which is an item that is of great nutritional supply, improving diet’s quality of people due to the amino-acids, proteins, fats, minerals and trace elements. That is reason why the use of pollen traps is being analysed to get the corbicula pollen which you can get in the market. Along this work the four kinds of pollen traps used in the region will be compared. Parameters are: adaptability, how much comfortable is it to install it in the hive and the harvest in terms of efficiency in the collecting chore, to get information to be shared with producers from Comarca Andina from parallel 42°S and thus this information to encourage diversification of hive products and to provide the tools to make good decisions.

Descripción y propuestas técnicas para el cultivo de Quinua (Chenopodium quinua Willd.) en la Comarca Andina del Paralelo 42°: estudio de caso en Mallín Ahogado, Río Negro.

2025-10-02T13:54:44Z

Título: Descripción y propuestas técnicas para el cultivo de Quinua (Chenopodium quinua Willd.) en la Comarca Andina del Paralelo 42°: estudio de caso en Mallín Ahogado, Río Negro. Autor(es): Rossi D'imperio, Antonella Abstract: Quinoa (Chenopodium quinua Willd.) is an ancient crop that has gained global importance for decades due to its nutritional quality and agronomic versatility. This species has been cultivated in northern Patagonia since the 19th century. Currently, several quinoa cultivation experiments are being carried out in the Andean Region of the 42nd Parallel (CAP 42°) within the context of family farming, for personal consumption and sale of surpluses to local markets. At the same time, there are no scientific and/or technical studies documenting and evaluating these productions. This final project for the Technical Program in Organic Plant Production at the National University of Río Negro (TPVO - UNRN) proposes the general objective of analyzing and evaluating, in terms of management and yield, the local cultivation of quinoa in an associative family farming project in Mallín Ahogado (El Bolsón, Río Negro), with the aim of proposing actions to improve the cultivation system. This case study is the first to document local quinoa management practices in CAP 42°. The results conclude that the high phenotypic variability recorded in the crop can be considered the greatest deficiency for this productive cycle and that the management of the lot prior to planting and during crop development, along with an adjustment in the selection of plants that will be used as seed for sowing, are key points to mitigate this effect.

Comportamiento fenológico y productivo en nueve variedades de frambuesa (Rubus idaeus L.), en la localidad de El Bolsón, Río Negro, durante las temporadas 2019-2020, 2020-2021 y 2021-2022.

2025-10-02T13:54:33Z

Título: Comportamiento fenológico y productivo en nueve variedades de frambuesa (Rubus idaeus L.), en la localidad de El Bolsón, Río Negro, durante las temporadas 2019-2020, 2020-2021 y 2021-2022. Autor(es): Franza, Facundo Catriel Abstract: The genus Rubus is distributed worldwide, taxonomically placed within the Rosaceae family, and comprises approximately 1,450 accepted species (Royal Botanic Gardens Kew, n.d.). Among them, Rubus idaeus L. (European red raspberry) is a species presumed to be native to Greece (Mount Ida) and present in the wild in Europe and Asia Minor (GARCÍA RUBIO et al., 2014). Raspberries are part of the group known as berries, which represent approximately 2% of global fruit production: approximately 7.8 million tons, of which 83.3% are strawberries, 9.8% are blueberries, and 6.8% are raspberries (Food and Agriculture Organization of the United Nations [FAO], 2020). Currently, their demand is unmet at the national and global levels. Consumption in its fresh form, as well as through various products, has been growing in recent decades: the cultivated area worldwide today exceeds 120,000 hectares, while production volume exceeds 850,000 tons (FAO, 2020). In Argentina, cultivation of this species is relatively recent. The first plantations on a significant scale began in the El Bolsón area, Río Negro province, in the 1950s. After 1980, other productive regions such as Mendoza, Neuquén, and Buenos Aires joined the ranks. Meanwhile, the Andean Region of the 42nd parallel (particularly the towns of El Bolsón, El Hoyo, Lago Puelo, and Epuyén) encompassed around 70 hectares in 2008, of which 43 were located in Chubut and 28 in Río Negro (DE MICHELIS, 2012). In the Andean region along the 42nd parallel, trials of this nature began to be conducted at the end of the 20th century, given the need for specific information on the productive performance of raspberry varieties already existing in the area, as well as new ones. This practice yielded highly relevant data on phenology, production, fruit weight, harvest distribution, and marketability (MARTÍNEZ et al., 2009). This paper presents a study conducted during the 2019-2020, 2020-2021, and 2021-2022 production seasons, in a varietal trial located at the Humus de la Montaña farm in El Bolsón, Río Negro. This work includes the performance of nine raspberry varieties: Schönemann, Polka, Autumn Bliss, Tulameen, Himbo Queen, Himbo Top, Glen Ample, Sugana, and Fruat Mec. The task focused on recording phenological stages, crop distribution, and average yield, as well as measuring fruit characteristics of culinary and commercial interest, such as pH, Brix degrees, and average fruit weight.

Análisis y propuestas productivas para el cultivo de cannabis de uso medicinal en la Comarca Andina del Paralelo 42°.

2025-10-02T13:54:21Z

Título: Análisis y propuestas productivas para el cultivo de cannabis de uso medicinal en la Comarca Andina del Paralelo 42°. Autor(es): Carrasco, Agustina Leticia Abstract: Speaking of the Andean Region of the 42nd Parallel or El Bolsón automatically brings to mind idyllic landscapes, summer trips with overstuffed backpacks, drinking beer, visiting the hippie fair, and "smoking a joint." 1 This undoubtedly has to do with the fact that the consumption of Cannabis sativa ("hemp," "marijuana," "cannabis") has been part of the idiosyncrasy of a large sector of the Region since the 1970s. Since then, the methods of production and administration have changed, to the point that a significant percentage of the herbal preparations based on this plant consumed in the country come from this area. While this could be interpreted as a positive shift in terms of both "moral" and productive development, the truth is that both the cultivation and production of herbal preparations suffer from a series of difficulties that prevent the products from truly positioning themselves in a growing market and generate concerns among those who prescribe, recommend, and consume them. Based on the perceptions of both cannabis growers and processors regarding the raw material, and consumers regarding the quality and effectiveness of the final product, we focused on identifying some of the challenges faced by medicinal cannabis production during the period 2020 to 2022 in order to make recommendations aimed at overcoming them. The reconstruction of the international historical context, the analysis of Argentine legislation, the socio-productive characterization of the region, interviews and surveys conducted with key players in the production and consumption of phytopreparations, in addition to crop records and laboratory trials, have resulted in a scientific product co-constructed from the movement, science, and practice as pillars of agroecological thinking within which we inscribe organic production (Wezel, 2009). This paper seeks to contextualize and characterize the production of the Cannabis sativa plant for medicinal purposes in the Andean region of the 42nd parallel, identifying the main socio-productive challenges and proposing technical interventions to improve cultivation and strengthen this sector.

Crecimiento primario, floración y fructificación de "murta" (Ugni molinae Turcz) en dos cultivos experimentales en Argentina

2024-10-09T12:33:45Z

Título: Crecimiento primario, floración y fructificación de "murta" (Ugni molinae Turcz) en dos cultivos experimentales en Argentina Autor(es): Neranzi Barriga, Francisco Javier Abstract: Myrtle (Ugni molinae Turcz.) is a shrubby plant of the Myrtaceae family, known for its aromatic berries and health-promoting properties. It is a native species of temperate zones of Chile and Argentina, with most of its distribution on the western side of the Andes mountain range. In Argentina, the only natural accessions of this species recorded are found in the surroundings of Lago Puelo (Chubut) and the first trials of its cultivation are found in El Bolsón and Bariloche (Río Negro). The main purpose of this work was to evaluate the dynamics of primary growth throughout a growing season in cultivated plants of Argentine origin. This study describes the growth, flowering and fruiting rate of 169 one-year-old plants in a greenhouse in Bariloche and 46 four-year-old plants without cover in the Lago Puelo National Park. The primary growth of myrtle plants is conditioned by internal and external factors, as well as by the age of the plants. This species has the ability to flower from the first year after rooting of cuttings and the presence of pollinating agents is a determining factor for the formation of fruits. This work provides evidence of variations in primary growth, the moment and duration of flowering, and the ripening of the fruits of the myrtle, as well as its potential as a fruit option in the region. This paper contributes to the domestication process of the myrtle and suggests carrying out more trials with selected varieties and contrasting management.

Potencialidad de Vicia faba L. como Fertilizante Nitrogenado Natural en Planteos de Producción Vegetal Orgánico en la Comarca Andina del Paralelo 42

2021-05-20T15:05:25Z

Título: Potencialidad de Vicia faba L. como Fertilizante Nitrogenado Natural en Planteos de Producción Vegetal Orgánico en la Comarca Andina del Paralelo 42 Autor(es): Stardner, Daniel Abstract: Horticulture is an intensive activity that requires proper management, taking care of all the needs of crops to ensure their development under optimal conditions. Fertilization plays a central role in the functioning of the system. Organic agriculture seeks to close the production cycles as much as possible to reduce the need for imports of external inputs to the establishment. An alternative to the use of commercial fertilizers, manures and manures is the production of its own fertilizer in a part of the land area dedicated to this purpose. The The objective of this work was to evaluate the application to the soil of dry seeds of broad beans (Vicia faba L.) in ground form as nitrogen fertilizer in a lettuce (Lactuca sativa L.) crop. I know performance was evaluated and compared with those obtained with equivalent nitrogen doses of the Bioorganutsa commercial fertilizer. The lettuce yield was superior with a mean value of 252.29 gr ± 52.41 gr in the treatment fertilized with Bioorganutsa resulting statistically significant (p <0.05) compared to the treatment fertilized with beans with a value of 130.00 gr ± 36.50 gr and both with the control (value 63 gr ± 2.86 gr). However, the observed results with the application of the fertilizer derived from broad beans, they show good potential to be incorporated in an organic fertilization system, partially contributing to the needs of crops, increasing the quality of the soils and achieving greater independence from inputs external.

Evaluacion preliminar del rendimiento de dos variedades de mostaza blanca (sinapis alba L)

2021-02-04T15:21:07Z

Título: Evaluacion preliminar del rendimiento de dos variedades de mostaza blanca (sinapis alba L) Autor(es): Isaja, Melisa Abstract: In Argentina the main production area of white mustard (Sinapis alba L.) corresponds to Buenos Aires, constituting a winter crop. The Andean Region of Parallel 42 ° South (CAP42 ° S), with a cold temperate climate, has appropriate edaphoclimatic conditions for its production. Although it is grown on a family scale for artisanal dressing, there are no local records of yield. In order to evaluate and improve mustard yield in the Region, the behavior of seeds of different origin (cultivar Delfina INTA and Cultivar Local) was tested, considering three sowing dates (FS): two autumnal (1st FS: 24 April and FS 2: June 1) and a spring (FS 3: October 2, according to CAP42 ° S sowing calendars), at a density of 50 pl.m-2. The phenological cycle of the crop was evaluated in the different sowings and the yield and its respective components were determined: the height of the flowering plants (H), number of flower branches (RF), siliques per plant (SP), grains per silique (GS) and the weight of 1000 seeds (P1000). The results indicated differences in the yield associated with the sowing date and the origin of the seed. Local mustard showed the best yields sowing in autumn, reducing production to less than a third in spring (2960, 2625 and 894 kg.ha-1, respectively). The yield of the cultivar Delfina was similar to the Local in the 1st FS and 3rd FS, although significantly lower in the 2nd FS. In general, in autumn sowings the yield is higher than in spring sowing, observing the same trends for SP and P1000. The duration of the cultivation decreases when the sowing date is delayed, shortening the vegetative growth period and the fruiting period until harvest. The mustard yield for CAP42 ° S is in the order of that observed for other regions of the country. Increasing the production of white mustard in CAP42 ° S would allow the production of regional products to be supplied with local inputs, promoting production at source and becoming an alternative to diversify agricultural production.

Comportamiento fenológico y productivo de nogales ( Juglans regia ) variedad Chandler en la Comarca Andina del Paralelo 42

2019-09-09T13:09:10Z

Título: Comportamiento fenológico y productivo de nogales ( Juglans regia ) variedad Chandler en la Comarca Andina del Paralelo 42 Autor(es): Bajer, Sebastian Abstract: This paper seeks to provide information on phenology, fruit quality and incidence of Cydia pomonella (“Carpocapsa”) in Juglans regia (walnut) of the variety Chandler in a crop of the Andean Region of Parallel 42 (CAP 42). This one was chosen variety because of the limited information available for CAP42, as it is the most cultivated in the last years worldwide and in the region, for its smaller size that facilitates the harvest, its lateral branching that increases its productivity, its high yield at Shelling, its marked commercial quality and the potential compatibility with El Hoyo weather conditions. It is a crop with strong cultural roots, started with specimens obtained from seed and that in recent years has been turning towards the use of grafted varieties, mainly Chandler. This variety was chosen for its outstanding characteristics such as the quality of the pulp and its toasts of lateral fruiting that allow greater performance. The Cydia incidence study pomonella was made on 10 trees of the Chandler variety during an annual cycle 2017-2018, in a productive establishment in El Hoyo. A total was taken as a sample of 1000 random nuts. The study of phenology and fruit quality was carried out on 3 of previously selected trees taking a sample of 30 fruits per tree. He observed the phenological development of the variety and its coincidence with the occurrence of frost The female flowering (from Ef to Gf) occurred 4 days after the last frost of the same year, without harming the development of the fruit set. Quality aspects of the Average peeled nut such as weight (5g), diameter (H = 42.9mm), yield at shelled (45.3%) and color (60% light walnuts). Depending on the diameter, they enter the “giant” nut category, however, all values are somewhat lower than bibliographic, possibly due to differences in the duration of the crop cycle and / or of driving. The incidence of Cydia pomonella (0.6% of affected fruits) was studied and dismissed for the parallel implementation of a granulovirus treatment against such plague.

Multiplicación por estacas de raíz en Rubus

2019-07-02T11:42:40Z

Título: Multiplicación por estacas de raíz en Rubus Autor(es): Peña, Perla Giselle Abstract: This work is the result of a pre-professional practice carried out in humus nursery belonging to the Arroyo Claro establishment in which it is acquired experience and deepen knowledge of the method, multiplication by stake Root applied in different varieties of the genus Rubus idaeus, L. Part of the result of the practice, proposes the implementation of a new Disclosure tool in application format for mobile devices called Propagation of raspberries. In this way it can be made available of the whole community the technique to propagate raspberry. The production of seedlings at a regional level is very important given the Increasing increase in consumption of raspberries that enhanced the implementation of new fruit trees. In the course of this work, issues such as social situation are addressed economics of the crop, methodology for propagation of raspberry by cuttings of root and influential factors in propagation techniques

Producción orgánica de hortalizas bajo cubierta en estación invernal en El Bolsón

2019-03-18T13:55:37Z

Título: Producción orgánica de hortalizas bajo cubierta en estación invernal en El Bolsón Autor(es): Schwartzman, Juan David

Multiplicacion por estacas, calidad de semillas y características de frutos de poblaciones de Ugni Molinae Turcz (Myrtaceae) del Parque Nacional Lago Puelo

2021-11-16T14:13:30Z

Título: Multiplicacion por estacas, calidad de semillas y características de frutos de poblaciones de Ugni Molinae Turcz (Myrtaceae) del Parque Nacional Lago Puelo Autor(es): Guenuleo, Brisa Serena Abstract: Ugni molinae Turcz. (Uñi, Family Myrtaceae) is an endemic shrub of Chile and Argentina with interesting properties in its leaves and fruits. In Chile its fruits are commercialized, but in Argentina this resource is unknown. This work intends to begin the study of the multiplication, the quality of the seeds and the characteristics of the Uñi fruits of the Lago Puelo National Park (PNLP) in order to evaluate their productive potential. A reproduction test was carried out by stakes and aerial development in semi-controlled conditions with or without commercial rooting (EC, indolebutyric acid). In addition, the following were evaluated: quality of seeds (in weight and germination); weight, polar and equatorial diameter, soluble solids (ºBrix), titratable acidity and pH of the fruits; number of fruits per plant and size of plants. 80% of rooting was obtained with EC and 66% without EC. The aerial development was greater in the stakes with EC. On average, 38.8% of the seeds germinated and the weight of 1000 seeds was 0.855g. The characteristics of the fruits were, on average: equatorial diameter = 7.1 mm, polar diameter = 6.0 mm, weight = 0.20 g, ºBrix = 19, pH = 3.6 and acidity = 5.25 g / l. The plants measured about 1.5 m in height, 13 mm in trunk diameter and 0.6 m in width, and had 57 fruits per plant. It is concluded that Uñi can be multiplied by stakes with or without EC, although the application of EC favors the aerial development. The quality of the seed is good but it varies between zones. In comparison with the results obtained for Uñi in Chile, the fruit production and the chemical characteristics of the fruits in the PNLP were good, but not their physical characteristics.

Estimulación del enraizamiento de estacas con extractos de Salix fragilis, Plantago lanceolata y Aloe vera

2019-03-25T12:12:04Z

Título: Estimulación del enraizamiento de estacas con extractos de Salix fragilis, Plantago lanceolata y Aloe vera Autor(es): Pascolini, Alejandra Paola Abstract: The present work aims to evaluate the effect of rooting aqueous extracts of willow (Salix fragilis L), plantago (Plantago lanceolata L), aloe (Aloe vera L) and the combination of extracts of P. lanceolata and S. fragilis on stakes of rosemary, (Rosmarinus officinalis L). The rooting capacity of the natural extracts is compared with that of the commercial product ANA (naphthalene acetic acid). The test was carried out outdoors in artificial substrate with periodic record of temperature and rainfall. The rooting stimulation was measured four months after implantation, evaluating quality, number of roots, number of callus per stakes and fresh weight of branches, expressing the rooting effects in percentage. It is hypothesized in this work that the extracts of S. fragilis, A. vera and P. lanceolata significantly promote the rooting of cuttings and that the exposure to the combined extracts has synergistic effects on the quality of roots developed and on the percentage of Rooting The results indicate that the rooting with the extract of P. lanceolata was similar to that of the control with distilled water, being less the rooting effects in the treatment with the ANA and with the extract of A. vera. Inhibitory effects were observed by exposure to S. fragilis extract and its combination with extracts of P. lanceolata, possibly due to the use of willow extract in a high concentration. The verification of these results is recommended by evaluating in future studies, different concentrations of rooting and extraction methods. Descripción: El presente trabajo pretende evaluar el efecto de enraizamiento de los extractos acuosos de sauce (Salix fragilis L), plantago (Plantago lanceolata L), aloe (Aloe vera L) y la combinación de extractos de P. lanceolata y S. fragilis sobre estacas de romero, (Rosmarinus officinalis L). Se compara la capacidad enraizante de los extractos naturales con la del producto comercial ANA (ácido naftalen acético). El ensayo se realizó a la intemperie en sustrato artificial con registro periódico de la temperatura y pluviometría. La estimulación del enraizamiento se midió a los cuatro meses de la implantación, evaluando calidad, cantidad de raíces, número de callos por estacas y peso fresco de ramas, expresando los efectos enraizantes en porcentaje. Se plantea como hipótesis de este trabajo que los extractos de S. fragilis, A. vera y P. lanceolata promueven significativamente el enraizamiento de estacas y que la exposición a los extractos combinados posee efectos sinérgicos en la calidad de raíces desarrolladas y en el porcentaje de enraizamiento. Los resultados indican que el enraizamiento con el extracto de P. lanceolata fue similar al del control con agua destilada, siendo menores los efectos enraizantes en el tratamiento con el ANA y con el extracto de A. vera. Se observaron efectos inhibitorios por exposición al extracto de S. fragilis y a su combinación con extractos de P. lanceolata, debidos posiblemente al uso del extracto de sauce en una alta concentración. Se recomienda la verificación de estos resultados evaluando en estudios futuros, diferentes concentraciones de enraizante y métodos de extracción.

Comportamiento bajo cubierta de tomate variedad Rio Grande en Comarca Andina del Paralelo 42º con aplicación de dos tipos de abonos orgánicos.

2019-03-25T11:57:32Z

Título: Comportamiento bajo cubierta de tomate variedad Rio Grande en Comarca Andina del Paralelo 42º con aplicación de dos tipos de abonos orgánicos. Autor(es): Muñoz, Ivanna Abstract: This work aims to provide the first data for the area, on behavior, yield and quality of tomato fruits Rio Grande variety, Lycopersicon esculentum Mill, in order to promote alternative production in commercial and family agriculture in the Andean Region. This is an interesting variety because it has its ideal characteristics for fresh consumption and industrialization. Produced under cover with two treatments of organic fertilization, goat manure and commercial organic fertilizer from Bahía Blanca, differences in yield were expected in favor of commercial organic fertilizer due to its rapid availability. The yields per plant and per m2 of greenhouse, fruit weight, bunches per plant, leaf chlorophyll content, lycopene content, total soluble solids or ºBrix, titratable acidity and ºBrix / acidity ratio were measured. The measurements showed similar results, there was only a significant difference in the titratable acidity and in the relation Brix / acidity (parameter related to the gustatory quality of the fruit), being favorable for the treatment of goat, which could be due to the higher content of matter organic fertilizer, which provides better conditions for the absorption of phosphorus and potassium, which directly intervene in the flavor. Due to problems to perform adequate irrigation, part of the crop was affected by apical rot. Approximately 21% of the production in both treatments did not mature, which may be the reason that the Rio Grande variety is semi-late and the temperatures did not allow total ripening. Even so, the yields obtained were very good compared to the average of other production areas, it is believed that if practices are applied in the crop architecture that induce precocity and a suitable irrigation system is incorporated, the yields would be higher, being able to be feasible the production of this variety in the area without major inconveniences Descripción: Este trabajo pretende brindar los primeros datos para la zona, sobre conducta, rendimiento y calidad de frutos de tomate perita variedad Rio Grande, Lycopersicon esculentum Mill, con la finalidad de fomentar producciones alternativas en la agricultura comercial y familiar en la Comarca Andina. Esta es una variedad interesante por poseer sus frutos características ideales para consumo en fresco e industrialización. Producido bajo cubierta con dos tratamientos de fertilización orgánica, abono caprino y abono orgánico comercial proveniente de Bahía Blanca, se esperaban diferencias en rendimiento a favor del abono orgánico comercial por su rápida disponibilidad. Se midieron los rendimientos por planta y por m2 de invernadero, peso de frutos, racimos por planta, contenido de clorofila en hojas, contenido de licopeno, sólidos solubles totales o ºBrix, acidez titulable y relación ºBrix/acidez. Las mediciones arrojaron resultados similares, solo hubo diferencia significativa en la acidez titulable y en la relación ºBrix/acidez (parámetro relacionado con la calidad gustativa del fruto), resultando favorable para el tratamiento de abono caprino, lo que podría deberse al mayor contenido de materia orgánica de este abono, la cual brinda mejores condiciones para la absorción de fósforo y potasio, que intervienen directamente en el sabor. Por problemas para realizar el riego adecuado, hubo parte de la cosecha afectada por podredumbre apical. Aproximadamente el 21% de la producción en ambos tratamientos no maduró, pudiendo ser el motivo que la variedad Rio Grande es semitardía y las temperaturas no permitieron la total maduración. Aún así, los rendimientos obtenidos fueron muy buenos comparándolos con la media de otras zonas de producción, se cree que si se aplican prácticas en la arquitectura del cultivo que induzcan la precocidad y se incorpora un sistema de riego acorde, los rindes serían superiores, pudiendo ser factible la producción de esta variedad en la zona sin mayores inconvenientes

El cultivo de trigo (Triticum aestivum) en la Comarca Andina del paralelo 42, análisis de la producción histórica-actual y ensayo de comportamiento varietal con el método de Agricultura Natural.

2020-06-05T13:30:22Z

Título: El cultivo de trigo (Triticum aestivum) en la Comarca Andina del paralelo 42, análisis de la producción histórica-actual y ensayo de comportamiento varietal con el método de Agricultura Natural. Autor(es): Fidani, Luca Abstract: The main objective of this work is to value the historical production and the current production of wheat (Triticum aestivum) in the Andean Region of Parallel 42. For this three axes of work were proposed: a) to make a compilation of historical production, b ) obtain a real panorama of the production, and c) carry out a trial of varieties with aptitude for cultivation in the area, by the method of Natural Agriculture. Data was collected informing that at the beginning of the last century a production of around 600 tons of wheat was produced in the region and that there were at least 5 mills. Then the production would go to mid-1900 due to the entry of flour at low prices of the Rio de La Plata Mills. The information gathered from the current producers that today are cultivated approximately 23 hectares of wheat. There are 6 products of one hectare each and 6 products of less than one hectare. The interviews indicated that they grew in the crop. The test of varieties made under the method of Natural Agriculture proved to have the same yields as the cultures carried out with traditional methods in the area, without the need to till the soil in depth. He proved that Kammut and Rouge de Bordeaux varieties produced more than the other varieties. It was also found that the yields of the trials and the manufacturers that are cultivated with the traditional method are around 1500-2000 Kg / ha and that they are lower than the yields obtained by a producer that grows with Direct Seeding and fertilizer use. There is probably a limitation in the amount of water and nutrients that do not allow to have more yields, so it is necessary to convince the wheat crop with the application of fertilizers and irrigation Descripción: El principal objetivo de este trabajo es valorizar la producción histórica y actual del cultivo de trigo (Triticum aestivum) en la Comarca Andina del Paralelo 42. Para esto se plantearon tres ejes de trabajo: a) realizar una recopilación de la producción histórica, b) obtener un panorama actual de la producción, y c) realizar un ensayo de variedades con aptitud para el cultivo en la zona, por el método de Agricultura Natural. Se recopilaron datos que informan que a principios del siglo pasado se realizaba en la región una producción que rondaba las 600 toneladas de trigo y que existieron por lo menos 5 molinos. Luego la producción iría decayendo a mediados de 1900 debido a la entrada de harina a bajos precios de los Molinos Río de La Plata. La información recopilada de los productores actuales indicó que hoy en día se cultivan aproximadamente 23 ha de trigo. Existen 6 productores de más de una hectárea que siembran todos los años y más de 6 productores de menos de una hectárea. Las entrevistas realizadas indicaron un creciente interés en el cultivo. El ensayo de variedades realizado bajo el método de Agricultura Natural demostró tener los mismos rendimientos que los cultivos realizados con métodos tradicionales en la zona, sin la necesidad de labrar el suelo en profundidad. Comprobó que las variedades Kammut y Rouge de Bordeaux produjeron más que las demás variedades. También se encontró que los rendimientos de los ensayos y los de los productores que cultivan con el método tradicional rondan en los 1500-2000 Kg/ha y que estos son menores a los rendimientos obtenidos por un productor que cultiva con Siembra Directa y uso de fertilizante. Probablemente exista una limitante en la cantidad de agua y nutrientes que no permite poder tener más rendimientos, por lo cual sería conveniente ensayar el cultivo de trigo con la aplicación de abonos y riego.

Seguimiento y asesoramiento técnico a productor familiar de fruta fina del paraje Mallín Ahogado

2019-03-25T12:19:31Z

Título: Seguimiento y asesoramiento técnico a productor familiar de fruta fina del paraje Mallín Ahogado Autor(es): Pierani, Giovanna Abstract: The present preprofessional work consisted in carrying out the accompaniment to a family producer of fine fruit from Mallín Ahogado to be able to identify the causes that influenced the low yields obtained in their plantations of raspberry and strawberry with respect to the averages of the region. For This was followed by a series of periodic visits from October 2015 to May 2016, where the different tasks carried out, states were monitored phenological and health, yields by species and variety, treatment Post-harvest of fruit and marketing channels. Measurements of the irrigation system for both sprinkling and dripping, determining the sheets issued for the same, losses of load in the distribution line, as well as the efficiency in operation. The results showed that the plantation sectors of raspberry and strawberry that are under drip system presented the lower yields, both due to the malfunction of the same for lack of a good filtering system as by the lack of frost protection that a system of spray can provide. This added to the delay in the cultural tasks that they have been happening throughout the seasons, they contributed to the low yields The data obtained throughout the accompaniment allowed establish that in order to improve and increase the yields it is necessary to redesign the irrigation system and adopt the spray for the entire plantation of raspberry, improve the filtering system for the proper functioning of the drip in the strawberry, replace the main distribution line by hose of greater diameter avoiding loss of load and optimizing the use of the pump. Descripción: El presente trabajo preprofesional consistió en realizar el acompañamiento técnico a un productor familiar de fruta fina del paraje de Mallín Ahogado para poder identificar las causas que influyeron en los bajos rendimientos obtenidos en sus plantaciones de frambuesa y frutilla con respecto a los promedios de la región. Para ello se realizaron una serie de visitas periódicas desde el mes de Octubre del 2015 a Mayo del 2016, donde se monitorearon las distintas labores realizadas, estados fenológicos y sanitario, rendimientos por especie y variedad, tratamiento postcosecha de la fruta y canales de comercialización. Se realizaron mediciones del sistema de riego tanto de aspersión como goteo, determinando las láminas emitidas por los mismos, pérdidas de carga en la línea de distribución, así como la eficiencia en el funcionamiento. Los resultados arrojaron que los sectores de la plantación de frambuesa y la frutilla que se encuentran bajo sistema de goteo presentaron los rindes más bajos, tanto por el mal funcionamiento del mismo por falta de un buen sistema de filtrado como por la falta de la protección antihelada que un sistema de aspersión puede brindar. Esto sumado al retraso en las labores culturales que se vienen sucediendo a lo largo de las temporadas, contribuyeron a los bajos rendimientos. Los datos obtenidos a lo largo del acompañamiento permitieron establecer que para poder mejorar y aumentar los rindes es necesario rediseñar el sistema de riego y adoptar la aspersión para la totalidad de la plantación de frambuesa, mejorar el sistema de filtrado para el correcto funcionamiento del goteo en la frutilla, remplazar la línea principal de distribución por manguera de mayor diámetro evitando perdidas de carga y optimizando el uso de la bomba.

Comportamiento fenológico y productivo de tres variedades de arándanos Rabbiteye (Vaccinium ashei), en la localidad de El Bolsón, Río Negro, durante la temporada 2011-2012

2019-03-25T12:09:38Z

Título: Comportamiento fenológico y productivo de tres variedades de arándanos Rabbiteye (Vaccinium ashei), en la localidad de El Bolsón, Río Negro, durante la temporada 2011-2012 Autor(es): Currulef, Anahí Abstract: In the present work the reproductive stages were determined and the productivity was evaluated in three varieties of blueberries Rabbiteye (Vaccinium ashei): Ira, Tifblue and Powderblue, located in a plantation in the area of El Bolsón, during the period September 2011 - April 2012 The phenological observation was established by weekly monitoring of the crop until the end of February. Productivity was measured through the harvest that was made weekly from February 22, 2012. For this season (2011-2012), the varieties under study offered about 80% of their production in March with a higher concentration in the second and third week. Ira was highlighted with the highest average fruit weight. Other quality parameters were also evaluated such as the pH where the three varieties behaved without differences between them, and Brix degrees were measured, for which Tifblue showed a greater percentage of total soluble solids compared to Ira and Powderblue, which did not show differences between them. Descripción: En el presente trabajo se determinaron las etapas reproductivas y se evaluó la productividad en tres variedades de arándanos Rabbiteye (Vaccinium ashei): Ira, Tifblue y Powderblue, ubicados en una plantación en la zona de El Bolsón, durante el período septiembre 2011 – abril 2012. La observación fenológica se estableció haciendo un monitoreo semanal del cultivo hasta fines de febrero. La productividad se midió a través de la cosecha que se realizó semanalmente a partir del 22 de febrero de 2012. Para esta temporada (2011-2012), las variedades en estudio ofrecieron cerca del 80% de su producción en marzo con una mayor concentración en la segunda y tercera semana. Se destacó Ira con el mayor peso medio de fruto. Se evaluaron también otros parámetros de calidad como el pH donde las tres variedades se comportaron sin diferencias entre sí, y se midieron grados Brix, para los cuales Tifblue evidenció mayor porcentaje de sólidos solubles totales frente a Ira y Powderblue que no mostraron diferencias entre sí.

Respuesta del cultivo de lúpulo al tratamiento con bacterias Rizosféricas

2019-10-28T15:53:47Z

Título: Respuesta del cultivo de lúpulo al tratamiento con bacterias Rizosféricas Autor(es): Méndez Caldeira, Victoria Abstract: The Lupulo (Humulus lupulus) is an aromatic plant grown for industrial purposes, almost exclusively brewers. Its flowers or "cones" contain resins that give beer bitter taste and stability, and essential oils that characterize its aroma. The Andean Region from the 42nd parallel, it is one of the two places in the country where hops are produced. The management of the crop it is done in a conventional way, being most of the agrochemicals used, fertilizers Among the organic alternatives that could be used to promote nutrition of the culture, is the addition of rhizospheric bacteria, which are a type of microorganisms that colonizes the roots of some plants in a symbiotic relationship, favoring their nutrition and health through different mechanisms. The objective of this work is to evaluate the response of culture to treatment with rhizospheric bacteria, measured as accumulated biomass. He evaluated: Azospirillum brasilense; Pseudomonas fluorescens; Bacillus subtilis and a tribacterial C product called PGPR® (Plant Growth Promoting Rhizobacteria). Two field trials were carried out using plants of the Nugget variety (high resin variety); one trial was conducted in nursery to field and the other in an adult plantation in productive stage; the biofertilizers were applied in aqueous solution on the strain of each individual; at the time of harvest it . They took data on the response variables: biomass / plant and cones / plant. The statistical analysis of the data showed no significant differences with respect to the control but positive trends to treatment with PGPR in the nursery trial. In the case of the adult plantation, despite having assembled a DCA, a statistical analysis could not be made, since the plants harvested in groups by treatment and not individually (due to operational establishment at the time of full harvest), favorable average values were obtained for the treatments Azospirillum brasilense and Pseudomonas fluorescens. Descripción: El lúpulo (Humulus lupulus) es una planta aromática cultivada con fines industriales, casi exclusivamente cerveceros. Sus flores o "conos" contienen resinas que le confieren a la cerveza el sabor amargo y la estabilidad, y aceites esenciales que caracterizan su aroma. La Comarca Andina del paralelo 42º, es uno de los dos lugares del país donde se produce lúpulo. El manejo del cultivo se realiza de manera convencional, siendo la mayor parte de los agroquímicos utilizados, fertilizantes. Dentro de las alternativas orgánicas que podrían utilizarse para favorecer la nutrición del cultivo, se encuentra la adición de bacterias rizosféricas, que son un tipo de microorganismos que coloniza las raíces de algunas plantas en una relación simbiótica, favoreciendo su nutrición y sanidad a través de diferentes mecanismos. El objetivo de este trabajo es evaluar la respuesta del cultivo de lúpulo al tratamiento con bacterias rizosféricas, medida como biomasa acumulada. Se evaluaron: Azospirillum brasilense; Pseudomonas fluorescens; Bacillus subtilis y un producto C tribacterial llamado PGPR® (Plant Growth Promoting Rhizobacteria). Se realizaron dos ensayos a campo utilizando plantas de la variedad Nugget (variedad de alta resina); un ensayo se realizó en vivero a campo y el otro en una plantación adulta en etapa productiva; los biofertilizantes fueron aplicados en solución acuosa sobre la cepa de cada individuo; en el momento de la cosecha se tomaron datos sobre las variables respuesta: biomasa/planta y conos/planta. El análisis estadístico de los datos no mostró diferencias significativas con respecto al testigo pero sí tendencias positivas al tratamiento con PGPR en el ensayo de vivero. En el caso de la plantación adulta, a pesar de haber montado un DCA, no se pudo hacer un· análisis estadístico, ya que las plantas se cosecharon en grupos por tratamiento y no individualmente (por impedimentos operativos del establecimiento en época de plena cosecha), se obtuvieron valores promedio favorables para los tratamientos Azospirillum brasilense y Pseudomonas fluorescens.

Crecimiento, supervivencia y arquitectura de plantas de murta (ugni molinae turcz) derivadas de esquejes y semillas, en la comarca andina del paralelo 42° S.

2019-10-28T15:51:07Z

Título: Crecimiento, supervivencia y arquitectura de plantas de murta (ugni molinae turcz) derivadas de esquejes y semillas, en la comarca andina del paralelo 42° S. Autor(es): Torrego, Sergio N. Abstract: The murta (Ugni molinae Turcz.) Is a shrub species native to Argentinian and Chilean Patagonia that produces attractive reddish berries of intense aroma. Studies on its chemical composition have shown that both fruits and leaves contain phenolic compounds and anthocyanins with antioxidant and antibacterial activity. It is researched for productive and domestication purposes in different countries, and the domestication of local ecotypes could mean an alternative of agroecological diversification to take advantage of this resource of great productive potential. The objective of the following study is to analyze the survival, growth and architecture of plants derived from cuttings (PDE) and plants derived from seed (PDS), from of native populations of Lago Puelo National Park (Argentina), during the period comprised between October 2015 and November 2016. One hundred PDE and 162 PDS of 6 months of age were placed in 1.5 l pots with a substrate formed by black earth, compost of vegetal residues and forest mulch. The PDS were developed in a greenhouse with an irradiance of 38% and the PDE were placed in the nursery under two irradiance conditions (E1 = 35% and E2 = 6%). Survival was 43.2% for PDS, while in PDE it was 65.8% for E1 and 89.5% for E2. The averages (± standard deviations) of stem length were: 120 ± 63 mm for PDS, 217 ± 115 mm for E2 and 371 ± 71 mm for E1. The averages (± standard deviations) of stem diameter were: 2.0 ± 0.5 mm for PDS, 2.4 ± 0.6 mm for E2 and 3.6 ± 0.7 mm E1. The growth expressed by the plants during the trial was satisfactory, in addition the murta presents high tolerance to cultural work of ringing and transplanting. The branching patterns obtained in this study show a clear shrub behavior. Based on the results obtained, multiplication is advised by stakes rather than by seeds. It highlights the sensitivity of the murta to frost, this could mean that its development in Argentina is restricted to protected cultivation or agroforestry systems Descripción: La murta (Ugni molinae Turcz.) es una especie arbustiva nativa de la Patagonia argentina y chilena que produce atractivas bayas rojizas de intenso aroma. Estudios sobre su composición química han demostrado que tanto frutos como hojas contienen compuestos fenólicos y antocianinas con actividad antioxidante y antibacteriana. Es investigada con fines productivos y de domesticación en diferentes países, y la domesticación de ecotipos locales podría significar una alternativa de diversificación agroecológica para aprovechar este recurso de gran potencial productivo. El objetivo del siguiente estudio es analizar la supervivencia, crecimiento y arquitectura de plantas de murta derivadas de esquejes (PDE) y plantas derivadas de semilla (PDS), provenientes de poblaciones nativas del Parque Nacional Lago Puelo (Argentina), durante el período comprendido entre Octubre de 2015 y Noviembre de 2016. Cien PDE y 162 PDS de 6 meses de edad se colocaron en macetas de 1,5 l con sustrato formado por tierra negra, compost de residuos vegetales y mantillo de bosque. Las PDS se desarrollaron en invernadero con una irradiancia del 38% y las PDE se colocaron en vivero bajo dos condiciones de irradiancia (E1 = 35% y E2 = 6%). La supervivencia fue del 43,2% para PDS, mientras que en PDE fue del 65,8% para E1 y del 89,5% para E2. Los promedios (± desv. estándar) de longitud de tallo fueron: 120±63 mm para PDS, 217±115 mm para E2 y 371±71 mm para E1. Los promedios (± desv. estándar) de diámetro de tallo fueron: 2,0±0,5 mm para PDS, 2,4±0,6 mm para E2 y 3,6±0,7 mm E1. El crecimiento expresado por las plantas durante el ensayo fue satisfactorio, además la murta presenta alta tolerancia a labores culturales de repique y transplante. Los patrones de ramificación obtenidos en este estudio muestran un claro comportamiento arbustivo. En base a los resultados obtenidos, se aconseja la multiplicación por estacas más que por semillas. Se destaca la sensibilidad de la murta a heladas, esto podría significar que su desarrollo en Argentina esté restringido a cultivo protegido o en sistemas agroforestales.