CORTE DE IRRIGAÇÃO E ADUBAÇÃO NITROGENADA NA CULTURA DO ALHO NO 10 MUNICÍPIO DE MORRINHOS-GO.

Abstract

The amount of nitrogen available together with soil moisture has a direct influence on the productivity and quality of garlic production. The objective of this research was to evaluate the behavior of the garlic crop submitted to irrigation cuts and nitrogen fertilization rates. The study was carried out in the Experimental Area of Olericultura of the Goiano Federal Institute Campus Morrinhos - GO. The experimental design was in randomized blocks, with four replications, in plots subdivided in the 5x4 scheme. with five irrigation cuts (1, 3, 6, 9, 12 days), carried out at the beginning of the differentiation between 50 and 60 days after planting and four levels of nitrogen fertilization (0, 50%, 100%, 150% N) of the recommended dose. The plots were formed by the irrigation cuts and the subplots the levels of nitrogen fertilization. The plots had 36 m2 (6 x 6m) and were composed of 16 plant lines, being evaluated only eight lines. The irrigation system used was micro-sprinkler, with operating pressure of 20 mca, height above the ground of 0.7 m, application intensity of 5.5 mm h-1 and with all treatments receiving equal irrigation slides. Irrigation management was guided by the evapotranspiration of the crop with the use of the class A tank. We evaluated the productive characteristics that are parameters used to determine the quality of the production as: productivity; fresh and dry pasta; Weight; diameter; length and number of bulbs and bulbs.