Avaliação do efeito de produtos promotores de crescimento aplicados via semente na cultura da soja

Abstract

Seed treatment consists of the application of substances capable of maintaining and / or improving its performance in the field. Each year new active ingredients are used for the treatment of soybean seeds. In addition to products such as insecticides, fungicides and nematicides, the use of biostimulants have shown a quantitative and qualitative increase in productivity, since they favor the good performance of plant vital processes even in adverse environmental conditions and have the capacity to produce precursors of plant hormones. Thus, the objective of this work was to evaluate the phytotoxic effect of products applied through seed treatment in soybean. The experiment was conducted in a laboratory and greenhouse, both located in the company Fortgreen, in the municipality of Paiçandu-PR. The treatments used were: T1 Insecticide + fungicide, T2 Insecticide + fungicide + Sample 1, T3 Insecticide + fungicide + ZC FULL Patriot, T4 Insecticide + fungicide + sample 4, T5 Insecticide + fungicide + Stimulate + T6 Insecticide + fungicide + Kelpak. The percentage of germination in paper and sand rolls, accelerated aging, seedling development, germination speed index and total dry mass of seedlings were evaluated. There were no statistical differences in germination on paper roll and sand or germination speed index, however, in the accelerated aging differences between treatments occurred, and sample 1 presented better results. In the total mass evaluation, the Kelpak product expressed a mass increase. In the hypocotyl and root development, the ZC Full Patriot product presented significant results.