Abstract
ABSTRACT In the search for homogeneous planting density and satisfactory results in soybean development and yield, the treatment of seeds can be carried out using a combination of chemical fungicides, growth stimulators, and other biological agents. The objective of this study is to evaluate the effect of chemical and biological inputs for soybean seed treatment on crop development and yield. Experiments were carried out in the 2010/2011 growing season in three municipalities of Rio Grande do Sul using the following treatments: fungicide fludioxonil, Trichoderma spp., fludioxonil + Trichoderma spp., fludioxonil + Trichoderma spp. + the growth stimulator Biozyme®, and a control (untreated). The total number of pods in treatment with Trichoderma spp. and the other treatments were up to 77% higher than that of the control. The grain yield of treatments with fludioxonil, fludioxonil + Trichoderma spp., and fludioxonil + Trichoderma spp. + Biozyme® was up to 14% higher than that of the control. These results indicate that fludioxonil combined with the fungus Trichoderma spp. and Biozyme® is indicated for treating soybean seeds and increases crop development and grain yield.
Highlights
Soybean is the most important crop in Brazilian agribusiness, which is the basis of the primary sector economy and trade balance in Brazil
Brazil is the world’s second largest producer and exporter of grains, and the state of Rio Grande do Sul accounts for 16% of the national production, with an average of 3,013 kg ha-1 (CONAB, 2019)
In the search for homogenous plant density and satisfactory results in soybean development and grain yield, other crop protection products, and growth stimulators are used in conjunction with fungicides in seed treatment
Summary
Soybean is the most important crop in Brazilian agribusiness, which is the basis of the primary sector economy and trade balance in Brazil. Brazil is the world’s second largest producer and exporter of grains, and the state of Rio Grande do Sul accounts for 16% of the national production, with an average of 3,013 kg ha-1 (CONAB, 2019). In the search for homogenous plant density and satisfactory results in soybean development and grain yield, other crop protection products, and growth stimulators are used in conjunction with fungicides in seed treatment. Seed treatment with fungicides is considered essential for managing seedborne pathogens and soil-borne fungi, which can cause seed rot and seedling damping-off (HENNING et al, 2010). Integrated disease management using biological control agents such as antagonistic fungi combined with chemical fungicides can be effective to control pathogens and reduce the use of pesticides (PANDOLFO, 2007). There is limited research on seed treatment with biological fungicides
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