Efeitos da variação da vazão do injetor de fertilizante em diferentes tempos de aplicação na uniformidade de distribuição do adubo em irrigação por gotejamento.

Abstract

The present research was held in an area of called São João, in the country of Mossoró in the state of Rio Grande do Norte. The effect of the three different out-flows of the injecting pump in the uniformity of the fertilization distribution was studied. The fertirrigation used time-lengths was of 34, 40 and 60 minutes, collecting samples for the analysis of the quantity of potassium in ten different moments. It was verified that the quantity of applied fertilizers was in function of the water volume coming from the tricklers and that the different out-flows of the injecting pump did not interfere in the uniformity of the potassium distribution.