DESEMPENHO PRODUTIVO DA CULTURA DO FEIJÃO (Phaseolus vulgaris L.) cv. CARIOCA PÉROLA IRRIGADO EM DIFERENTES INTERVALOS

Abstract

Beans are a legume with excellent protein value, rich in iron and that have a good amount of carbohydrates. It is a crop of great economic value, of which Brazil is the largest producer and largest consumer in the world. Each crop needs a total depth meeting the plant's water requirement throughout its development, varying from one period to another, due to its greater evapotranspiration. The water consumption of the crop varies with the development stage in which the plant is, the type of cultivar and the climatic conditions of the planting site, with its highest daily consumption in the flowering and pod filling phase. The experiment was carried out in Morrinhos - GO, at the Instituto Federal Goiano – Campus Morrinhos. The objective of this project was to evaluate the effect of different irrigation intervals on the productivity of the bean crop to determine which treatment would help to reach the highest yield of the crop. The same irrigation depths used by conventional micro-sprinklers were used to conduct this experiment, differing in the irrigation intervals (1, 3, 5, 7 and 9 days), which were defined in irrigation time, by the amount of mm of water that the crop demanded, starting at its reproductive stage, given productivity data obtained through the productivity function developed for local conditions. Plant stand parameters (EP), thousand grain weight (PMG), leaf area index (IAF), number of pods per plant (NVP), number of grains per pod (NGV), number of grains per plant (NGP) and productivity (P) were evaluated. It was found that when the culture was irrigated every day, that is, in the interval of 1 day, it showed higher productivity when compared to the other intervals.