APLICAÇÃO DE NUTRIENTES FOLIARES NA QUALIDADE FÍSICA, FISIOLÓGICA E SANITÁRIA DE SEMENTES DE FEIJÃO COMUM

Abstract

The objective of the present work was to evaluate the effect of split - plotting of leaf nitrogen fertilizers on the physical, physiological and sanitary quality of common bean seeds. Five treatments with different foliar fertilizers and two bean cultivars (BRS Estilo and ANfc9) were used. The tests of physical purity, humidity, TPG, TPG with sterilized material, electrical conductivity, mass of 1000 seeds and the sanity test were done in the seed analysis laboratory of the Federal Goiano Campus Ceres Institute. The emergence of seedlings in sand, emergency speed index, mean height of seedlings, number of leaves per seedling was determined in sand bed. The percentages of normal, dormant, abnormal and dead seeds by TPG were analyzed. Partitioning and sources of nitrogenous foliar fertilizers did not interfere in the tests of moisture degree, electrical conductivity and the emergence of seedlings in sand. Parcels and leaf fertilizer sources did not interfere in physical purity, moisture content, thousand seed mass, electrical conductivity and emergence of seedlings in sand. Regarding seed health, a high incidence of Fusarium pallidoroseum fungus was observed in T2 treatment (application of LP finish 1 L ha-1 in stage R7, pods stretching) in the cultivar BRS Estilo and T3 treatment (application of LP finish 1 L ha-1 in the R7 phase, pod elongation, + LP Bonder 2 L ha-1 + 2 kg ha-1 potassium nitrate in the R8 phase, grain filling) in the ANfc9 cultivar. The best treatment for the two cultivars in all variables analyzed was the T5 treatment (application of LP finish 1 L ha-1 in the R6 phase, flowering + LP Bonder 2 L ha- 1 + 2 kg ha -1 of potassium nitrate in phase R8, grain filling).