INFLUENCE OF THE USE OF VINHOTO ASSOCIATED WITH CURTUME SLUDGE AS A FERTILIZER IN PHYSIOLOGICAL COMPONENTS OF CONILON COFFEE LEAVES

Abstract

Agricultural and industrial residues are increasingly used in agricultural activities, mainly in the production of seedlings, as is the case of vinasse associated with tannery sludge as an alternative foliar fertilizer, in addition to reducing the production costs of farmers and nurseries, it can generate sustainability in production as long as these residues do not compromise the growth and physiology of the seedlings. In this sense, the objective of this work was to evaluate the effect of different proportions of vinasse associated with tannery sludge as an alternative foliar fertilizer on the physiological components in conilon coffee leaves. Conilon coffee seedlings of the clonal cultivar Vitória Incaper 8142 (clone 8) were used. The experimental design used was completely randomized, with ten replications, six treatments and ten plants per treatment. The treatments consisted of different concentrations of vinasse and liquid tannery sludge diluted in water. The levels of chlorophylls a, b, total, and indirect measurement of nitrogen and chlorophyll by the SPAD device were evaluated. Based on the behavior of the regression curve, in general the best results for physiological characteristics, when compared to treatment with nitrogen + potassium, were estimated between 42% V + 58% L and 46% V + 54% L.