Tips so that soy does not lose more yield
“We are facing a complex scenario, with stressed soybean crops, with fewer pods, fewer flowers and less plant structure, where it is critical to take care of the foliage that remains,” warned Cristina Palacio, associate professor of plant pathology at the Faculty of Agronomy of Pergamino (Unnoba) and director of the SIEF Plant Health Laboratory.
In this way, it was pronounced to the Pest Management Network (REM) of Aapresid. According to a report from the entity, the expert highlighted the importance of the use of technologies and the need to prioritize monitoring and timely control to ensure that crops successfully go through their critical period and grain filling.
“When crops are stressed is when they respond most to technology, in relation to those that have everything going for them, that are in a favorable environment and in an area of high potential,” he added.
In the midst of an agricultural campaign marked by drought, Palacio said that in the initial stages of cultivation, death was observed in isolated plants with symptoms of fusarium in implantation -Damping off-, with seedlings that, although they had already developed, due to the stress generated by this complex of soil fungi ended up dying. Also, in specific lowland areas, death by Phytophthora was recorded. However, the Aapresid report specified, given the drought conditions, the symptoms stopped manifesting.
The entity pointed out that the specialist commented that vascular diseases were registered and, to a greater extent, abiotic diseases -due to high temperatures and radiation-.
“The usual foliar diseases have already begun to appear, which attack more severely when faced with a stressed crop,” precise.
“In this sense, according to data from the REM survey of the 20/21 campaign carried out with Aapresid partners throughout the country, the main diseases detected in soybean crops were brown spot (Septoria glycines), leaf blight (Cercospora kikuchi ) and frog eye spot (Cercospora sojina), the so-called end-of-cycle diseases”, Aapresid stated in his report.
According to the entity, the expert recommended “focusing on monitoring, especially in those lots with soybean stubble from the previous campaign, where it is more likely that Septoria inocula are found.”
“A good follow-up of the culture will allow early detection and timely control of diseases, thus managing to come out of a campaign that is not suitable for cardiac patients,” said the organization.