MÉTODO DA FOLHA DESTACADA PARA AVALIAÇÃO DA INDUÇÃO DE RESISTÊNCIA DE PRODUTOS ALTERNATIVOS A PHAKOPSORA PACHYRHIZI, SCLEROTINIA SCLEROTIORUM E RHIZOCTONIA SOLANI EM SOJA.

The detached leaf method has the advantages of saving space, ease and accuracy of observations, less risk of contamination and uniformity of the experimental unit. This method has been used for rapid resistance induction tests. Thus, the objective of this work was to evaluate different products in the resistance induction in soybean leaves for Phakopsora pachyrhizi, Sclerotinia sclerotiorum and Rhizoctonia solani using the modified detached leaf method. The experimental design was completely randomized in a factorial scheme 7 (treatments) x 2 (application or not of the product in half of the same leaf), with five replications. The treatments were: 1 control, water; 2 acibenzolarS-methyl; 3 calcium; 4 micronutrients: copper, manganese and zinc; 5 -micronutrients: manganese, zinc and molybdenum; 6 NK fertilizer and 7 -Ascophyllum nodosum. There was no difference in treatments for P. pachyrhizi in the two experiments. The micronutrients manganese, zinc and molybdenum and A. nodosum algae have the potential to induce systemic resistance to S. sclerotiorum in soybean leaves in two experiments. For R. solani, the procedures with micronutrients stood out: copper, manganese and zinc and manganese, zinc and molybdenum, respectively, with reduction of AACPD only in the place where they were used in two experiments.