Aapresid already has its Sunflower Network

By Agriculture. 19/09/2022 | 08:09


Sunflower is a crop with a long history in Argentina and for the 2022/23 campaign, a planting intention of close to 2 million hectares is projected, showing a year-on-year increase of 17.6% and an expansion of almost 20% compared to the previous year. Average area of ​​the last 5 campaigns.

Within the framework of exchange workshops, producers and technicians from the Argentine Association of Direct Sowing Producers (Aapresid) detected knowledge gaps and needs to adjust crop management in each environment. In response to these demands, the Institution created the Aapresid Sunflower Network whose purpose is to generate and disseminate information on crop management in different environments and provide sustainability to production systems.

For this, the Network will lead tests in different environments of Buenos Aires and East of La Pampa, distributed in more than 12 confirmed sites so far. “Although in this campaign we focus on these regions, next year’s goal is to add sites in the central and northern areas of the country,” explains Ing. Agr. Magali Gutierrez, who leads this Network from Aapresid together with Juan Edwars (INTA BALCARCE)

The initiative, which already has the main sponsors and is finishing defining the test protocols, will initially focus on 4 lines of work:

Genetics: the low seed production of the last campaign – caused by the drought and the incidence of Phomopsis – reduces the range of germplasm available to producers. In this context, the objective of the Network will focus on evaluating the response in yield and quality of the genotypes in the different environments and behavior before Phomopsis and overturning.

Density: during emergence, the sunflower is very susceptible to attack by pests, cold and waterlogging, which in extreme situations imply reductions in the plant stand. This situation generates a lot of uncertainty among producers when it comes to defining planting density. The second line of work aims to generate new knowledge about this variable.

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Fungicide protection: the effects on sunflower yield of the use of fungicides are very consistent across different regions. In a price scenario that plays in favor of crop protection with these tools, the Network seeks to provide information on management guidelines in each environment and the cost-benefit ratio of treatments.

Nitrogen fertilization: The sunflower yield gap in Argentina is around 30-40%, and much of that gap is due to poor nutrition management. Current germplasms have great yield potential and therefore higher nutrient demands. In addition to this, today’s soils are more degraded. In this line, the Network is committed to evaluating the response in yield and quality of the addition of N in the crop and the impact of nitrogen fertilization on the health of the crop and overturning.