Fusariosis de la espiga de trigo. Comportamiento de cultivares comerciales de trigo pan. Campaña 2019/20

El objetivo del presente informe es presentar los resultados de la evaluación de la resistencia a la FE de tipo II de algunos de los cultivares comerciales de trigo más difundidos a nivel nacional llevada adelante durante la campaña 2019/2020. Se espera que el conocimiento del comportamiento de estos materiales facilite la elección de cultivares en la decisión de siembra. A fin de uniformar las condiciones medioambientales a las que los materiales se expusieron, los cultivares fueron inoculados en el momento de plena antesis.EEA BalcarceFil: Franco, María Fiorella. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Malbrán, Ismael. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina.Fil: Lori, Gladys. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina.Fil: Cendoya, María Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Pontaroli, Ana Clara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina

Characterizing the use of the silo bag in the Buenos Aires province. Caracterização do uso do silo bolsa na província de Buenos Aires

En Argentina existen numerosos estudios aconsejando cómo utilizar el silo bolsa, sin embargo, no se ha analizado la manera en que los productores usan realmente esta tecnología. El objetivo de este trabajo es caracterizar el uso del silo bolsa por parte de los productores en la provincia de Buenos Aires, identificar puntos críticos en su uso y señalar necesidades futuras de investigación. El análisis de encuestas a usuarios de silos bolsa indica que más de la mitad de los encuestados no miden las pérdidas de grano y el resto reporta pérdidas menores al 5%. Las principales causas de estas pérdidas son exceso de humedad del grano en el embolsado y roturas en el plástico. Además, las técnicas modernas de monitoreo y sus frecuencias recomendadas se aplican en muy baja proporción. A pesar de estos inconvenientes, la gran mayoría de los productores señalaron que el silo bolsa les permite incrementar los márgenes de la venta de su grano al posibilitarles negociar mejor el precio de venta y/o los costos de comercialización con el comprador. Para mejorar el uso de esta tecnología sería recomendable una mayor difusión y adopción del monitoreo frecuente a través de la medición de CO2, desarrollar y difundir tecnologías para mantener la hermeticidad del sistema, desarrollar tecnologías para reducir el riesgo de almacenamiento de granos húmedos y el desarrollo de modelos de ayuda a la toma de decisiones (ventas) que integren aspectos biológicos y económicos.In Argentina, many recommendations have been made about how silo bags should be used, but there is no systematic information on how farmers actually use this technology to store their grain. The objective of this study was to characterize the use of silo bags in Buenos Aires province, pointing out critical aspects and identifying a research agenda. The answers to a users' survey indicate that more than half of the users do not measure grain loss levels, while the rest report losses lower than 5 %. The main causes for these losses are high grain moisture at bagging time and punctures and rips in the bag's material. Moreover, modern monitoring techniques are not widely applied. Despite these limitations, most farmers pointed out that the silo bag technology allows them to increase the gross margin of their sales by increasing their bargaining power to negotiate the selling price or reducing the trading costs with the buyer. In order to improve the use of this technology, it would be desirable to promote a wider adoption of frequent bag monitoring through CO measurement, to spread 2 knowledge of technologies for maintaining silo bag airtightness, to develop technologies to lower grain storake risks, and to generate models aimed at helping decision-making (sales) that integrate biological and economic aspects of grain storageNa Argentina, existem inúmeros estudos sobre como usar o silo bolsa, no entanto, não tem sido analisada a maneira em que os produtores usam realmente essa tecnologia. O objetivo deste trabalho é caracterizar o uso do silo bolsa por parte dos produtores na província de Buenos Aires, identificar os pontos críticos e assinalar futuras necessidades de pesquisa. A análise de enquêtes a usuários de silos bolsa indica que mais da metade dos entrevistados não mede as perdas de grãos e o resto relata perdas inferiores a 5 %. As principais causas dessas perdas são: excesso de umidade do grão no ensacamento e quebras no plástico. Além disso, as técnicas modernas de monitoramento e suas freqüências recomendadas são aplicadas em uma proporção muito baixa. Apesar dessas desvantagens, a grande maioria dos produtores apontou que o silo bolsa permite aumentar as margens de venda de seus grãos, possibilitando negociar melhor o preço de venda e/ou reduzir os custos de comercialização com o comprador. Afim de melhorar o uso desta tecnologia, seria aconselhável uma maior divulgação e a adoção de monitoramento freqüente através da medição de CO ; 2 desenvolver e difundir tecnologias para reduzir o risco de armazenamento de grãos úmidos e para manter a impenetrabilidade do sistema e gerar modelos de ajuda à tomada de decisões (vendas) que integrem aspectos biológicos e econômicos.EEA BalcarceFil: Taher, Hernán Ignacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Urcola, Hernán Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Bartosik, Ricardo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Cendoya, María Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina

Cultivos puente verde como herramienta para manejar la nutrición nitrogenada de maíz

El uso de cultivos puente verde se viene generalizando en la región y resulta muy importante conocer en qué medida se ve afectada la disponibilidad de agua y nitrógeno en el cultivo de maíz. Este artículo nos acerca resultados respecto a ello.EEA BalcarceFil: Crespo, Cecilia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Crespo, Cecilia. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina.Fil: Corral, Raúl Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentina.Fil: Corral, Raúl A. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Diez, Santiago. Universidad de Buenos Aires. Facultad de Agronomía; Argentina.Fil: Delgado, Santiago. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Domínguez, Germán. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Agostini, María. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Cendoya, Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Sainz Rozas, Hernán Rene. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Sainz Rozas, Hernán Rene. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Sainz Rozas, Hernán Rene. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: García, Gisela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Studdert, Guillermo. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina

Temporal and spatial dynamics of Tomato spotted wilt virus and its vector in a potato crop in Argentina

The nature of spatial and temporal dynamics of Tomato spotted wilt virus (TSWV) and its vector in a potato crop cv. Innovator without insecticide application is analysed. Seed tuber was analysed for the presence of TSWV as a source of initial inoculum. The presence of plants with symptoms of TSWV was evaluated by visual observation and DAS-ELISA analysis to confirm the virus infection. Thrips species were collected from leaves and inflorescences and identified under stereomicroscope. The distribution of symptomatic plants and thrips species was recorded five times at 14 days intervals. The initial seed tuber infection was of 1.1%. Disease incidence was 0% at 29 days after planting (DAP), 0.2% at 43 DAP, 2.2% at 56 DAP, 11.6% at 70 DAP and 14.6% at 84 DAP. The progress of the disease was adequately described by a Logistic model [y=0.15/(1+1205372.93 × exp (−0.22 × DAP))]. Thrips vector species identified as resident in the crop during the whole cycle were Thrips tabaci (n=423), Frankliniella occidentalis (n=141) and as occasional species, F. schultzei (n=34) and F. gemina (n=5) were found. At 43 and 56 DAP a random distribution pattern was observed and the thrips species found were T. tabaci (n=188) and F. occidentalis (n=105). An aggregated pattern was determined at 70 and 84 DAP. Spatial patterns of the disease spread suggest a polycyclic epidemic with TSWV secondary spread in the potato crop. Multiple control measures were deduced from these epidemiological results like virus testing in tubers, removal of external virus infection sources and thrips control.EEA BalcarceFil: Salvalaggio, Andrea Eugenia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Lopez Lambertini, Paola Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Patología Vegetal; ArgentinaFil: Cendoya, Maria Gabriela. Universidad Nacional de Mar del Plata. Facultad de ciencias Agrarias; ArgentinaFil: Huarte, Marcelo Atilio. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentin

Predicting soybean losses using carbon dioxide monitoring during storage in silo bags

The rapid increase of the overall grain production of Argentina resulted with a storage capacity deficit in permanent structures of 40–50 million tons, and this context favored the rapid adoption of the silo bag technology. Silo bag allows differing grain selling from harvest time, taking advantage of the seasonal price changes and, hence, improving farmers’ income. However, storing grain in silo bag could be risky if inadequate planning, handling or monitoring is implemented. Thus, the objective of this article was to develop a prediction model for soybean losses in silo bag storage based on monitoring CO2 concentration and other sensible variables. During 2013, an experiment was conducted in 13 soybean silo bags placed at farms and grain elevators in Balcarce area, South East of Buenos Aires province, Argentina, since May to December. Grain samples were collected and grain quality was evaluated. Storage variables, such as moisture content and interstitial atmosphere gas composition were also recorded, and at the end of storage, physical grain losses were quantified for each silo bag (kg of spoiled grain not commercialized). The results showed that there was not generalized quality loss in any silo bag, but localized losses were observed. These losses occurred due to water entrance in the silo bag through openings which resulted in spoiled grain from 140 to 4320 kg, representing from 0.07% to 2.16% in a 200 ton silo bag. Next, a correlation to predict grain losses was developed, which considered grain moisture and a predictor related to the CO2 concentration at the silo bag closing end as independent variables. This correlation explained 73% of the grain losses variability, allowed to model different levels of losses, and was consistent with biological concepts.EEA BalcarceFil: Taher, Hernán Ignacio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Urcola, Hernán Alejandro. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce, ArgentinaFil: Cendoya, María Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; ArgentinaFil: Bartosik, Ricardo Enrique. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce, Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Spike architecture traits associated with type II resistance to fusarium head blight in bread wheat

Fusarium head blight (FHB) remains a devastating disease in bread wheat (Triticum aestivum L.). Genetic resistance to FHB is complex; aside from active physiological resistance, plant developmental and morphological traits indirectly affect disease progression and provide a passive resistance mechanism. Here, the relationship between FHB Type II resistance and spike architecture traits was evaluated in a recombinant inbred line (RIL) population of bread wheat in field experiments during two crop seasons under a completely randomized block design with two replications. Point inoculation was carried out at anthesis of each RIL. Disease severity at 21 days post inoculation (dpi), area under the disease progress curve (AUDPC) comprising severity measurements at 12, 17 and 21 dpi, rachis length, spike density, number of spikelets per spike, number of florets per spike and number of florets per spikelet were determined. The population showed significant variation for all traits. Heritability was moderate-high for FHB severity (0.69) and AUDPC (0.63) and high for spike architecture traits (0.74–0.92). FHB severity at 21 dpi and AUDPC were significantly associated with number of florets per spike [r = 0.38 (P < 0.001) and r = 0.31 (P < 0.01) respectively] and with the number of florets per spikelet [r = 0.28 (P < 0.01) and r = 0.27 (P < 0.05) respectively], reflecting a greater spread of the fungus in spikes with higher floret number. These results suggest that the number of florets per spike and per spikelet should be considered in FHB resistance breeding efforts, because selection of lines with higher number of florets could lead to a correlated selection response towards increased FHB levels under field conditions.EEA BalcarceFil: Franco, María Fiorella. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Franco, María Fiorella. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Lori, G. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina.Fil: Lori, G. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina.Fil: Cendoya, María Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Alonso, María Pía. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Alonso, María Pía. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina.Fil: Panelo, Juan Sebastián. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Panelo, Juan Sebastián. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina.Fil: Malbrán, I. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina.Fil: Malbrán, I. Universidad Nacional de La Plata. Facultad de Ciencias Agrarias y Forestales; Argentina.Fil: Mirabella. Nadia Estefania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Pontaroli, Ana Clara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce. Unidad Integrada Balcarce. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Pontaroli, Ana Clara. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina

Wheat spike fertility : inheritance and relationship with spike yield components in early generations

In wheat, grain number is considered as the product of spike dry weight (SDW) and the number of grains per unit of SDW, that is an indicator of spike fertility (SF). The aim of this study was to determine the heritability of SF and the effect of early selection for high SF on its relationship with other spike yield components. Two field experiments were conducted in the south-eastern Pampas (Argentina) with 400 F2 and F2:3 families obtained from two crosses between varieties with contrasting SF (PIG/SSN and B10/KCJ). Heritability estimates in PIG/SSN and B10/KCJ were, respectively, 0.60 and 0.51 by variance component analysis, 0.43 and 0.43 by F2 : F3 parent–offspring regression and 0.30 and 0.28 by realized heritability analysis. The existence of transgressive segregation (i.e. the occurrence of families with SF values that were more extreme than those of the parents) was observed. The top 25% F3 families with the highest SF had 12% more grains per spike, despite a 13% and 5% decrease in SDW per spike and weight per grain, respectively, than the remaining families. These results give support to the application of early selection for high SF.Fil: Martino, Diana Laura. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Abbate, Pablo Eduardo. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Cendoya, Maria Gabriela. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Gutheim, Florencia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Ministerio de Asuntos Agrarios de la Provincia de Buenos Aires. Chacra Experimental Miramar; Argentina,Fil: Mirabella, Nadia Estefania. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Comisión de Investigaciones Científicas de la Provincia de Buenos Aires; ArgentinaFDil: Pontaroli, Ana Clara. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Deforestation impacts on soil organic carbon stocks in the Semiarid Chaco Region, Argentina

Land use change affects soil organic carbon (SOC) and generates CO2 emissions. Moreover, SOC depletion entails degradation of soil functions that support ecosystem services. Large areas covered by dry forests have been cleared in the Semiarid Chaco region of Argentina for cropping expansion. However, deforestation impacts on the SOC stock and its distribution in the soil profile have been scarcely reported. We assessed these impacts based on the analysis of field data along a time-since-deforestation-for-cropping chronosequence, and remote sensing indices. Soil organic C was determined up to 100 cm depth and physically fractionated into mineral associated organic carbon (MAOC) and particulate organic C (POC). Models describing vertical distribution of SOC were fitted. Total SOC, POC and MAOC stocks decreased markedly with increasing cropping age. Particulate organic C was the most sensitive fraction to cultivation. After 10 yr of cropping SOC loss was around 30 %, with greater POC loss (near 60 %) and smaller MAOC loss (near 15 %), at 0-30 cm depth. Similar relative SOC losses were observed in deeper soil layers (30-60 and 60-100 cm). Deforestation and subsequent cropping also modified SOC vertical distribution. Soil organic C loss was negatively associated with the proportion of maize in the rotation and total crop biomass inputs, but positively associated with the proportion of soybean in the rotation. Without effective land use polices, deforestation and agricultural expansion can lead to rapid soil degradation and reductions in the provision of important ecosystem services.Fil: Villarino, Sebastián Horacio. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Studdert, Guillermo Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Baldassini, Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Cendoya, Maria Gabriela. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Ciuffoli, Lucía. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; ArgentinaFil: Mastrangelo, Matias Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce; ArgentinaFil: Piñeiro, Gervasio. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía; Argentin

Foraging behavior of Argentine Criollo and Angus cows grazing semi-desert rangelands in the Arid Gran Chaco region of Argentina

We monitored grazing behavior and habitat selection of Argentine Criollo (AC), South American heritage cattle breed, and Angus (AA) cows during summer and winter of 2016 (wetter year) and 2017 (drier year) at a site in La Rioja, Argentina. In each year and season, five AC and five AA cows were fitted with GPS collars configured to log animal position at 10-min intervals for 40 days. Movement, activity, and vegetation use patterns of each breed were derived from the GPS data. In summer, AC cows traveled similar daily distances, explored smaller (wetter year) or slightly larger (drier year) areas of the pasture, tended to move along more sinuous path trajectories, and showed stronger selection of the vegetation unit with higher forage quality and lowest woody cover compared to AA counterparts. AC cows allocated similar (wetter year) or more time to graze (drier year), allocated roughly the same amount of time to travel, and spent similar (wetter year) or less time resting (drier year) than AA cows. In winter, foraging behavior differences between breeds were only observed in the drier year. AC cows traveled farther and spent less time resting than AA counterparts that year. When comparing summer vs. winter movement patterns of each breed, AC cows showed an apparent greater ability to adapt to changing forage conditions (foraging plasticity) compared to AA counterparts which appeared to exhibit more rigid foraging patterns. Criollo cattle could be a tool to increase the resilience of Arid Chaco beef systems in the face of climate change. The rangeland conservation implications of raising Criollo vs. British beef cattle require further investigation.EEA CatamarcaFil: Herrera Conegliano, Oscar Ariel. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Catamarca; ArgentinaFil: Herrera Conegliano, Oscar Ariel. Universidad Nacional de Catamarca. Facultad de Ciencias Agrarias; ArgentinaFil: Blanco, Lisandro Javier. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria La Rioja; ArgentinaFil: Utsumi, Santiago A. New Mexico State University. Department of Animal and Range Sciences; Estados UnidosFil: Cibils, Andrés Francisco. New Mexico State University. Department of Animal and Range Sciences; Estados UnidosFil: Cendoya, Gabriela. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Jaimes, Florencia. Universidad Nacional de Mar del Plata. Facultad de Ciencias Agrarias; Argentina.Fil: Moltoni, Andrés Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Ingeniería Rural; ArgentinaFil: Ricci, Patricia. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Balcarce; Argentina.Fil: Ricci, Patricia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Instituto de Innovación Para la Producción Agropecuaria y el Desarrollo Sostenible; Argentina