DOSES DE POTÁSSIO NA PRODUTIVIDADE DE FEIJÃO CARIOCA

Abstract

Potassium is the second most absorbed nutrient by plants. In sandy soils, such as in the Cerrado, this nutrient is found in a form that is not available to the plant and is easily leached, in addition, potassium fertilization represents a great cost in agricultural production, a factor that was intensified by the Covid-19 pandemic and the war between Russia and Ukraine. This study aimed to evaluate the application of different doses of potassium fertilizers on carioca beans and their influence on productivity. The experiment was carried out in a completely randomized design, with six treatments and four replications, varying the potassium doses in 0; 30; 45; 60; 90 and 150 kg ha-1. The variables analyzed were: total dry mass (DM), number of pods (NV), average number of pods (MNV), number of grains (NG), average grains per pod (MGV), grain mass (MG) and stem diameter (DC). The data were submitted to the F test and in cases of significant effect, submitted to regression analyses. Potassium fertilization did not increase the yield components in common bean due to the early cycle of the cultivar, initial soil availability and planting fertilization presenting the minimum requirements for the development of the culture. New evaluations need to be carried out to determine the best dose of potassium chloride for the common bean crop in the western region of Bahia.