ADUBAÇÃO FOLIAR EM ARROZ IRRIGADO

Abstract

The increase in plant productivity is determined by the ability of plants to produce photoassimilates. In rice growing, the decline in photosynthetic capacity may occur early during grain filling. The possibility of increasing the leaf area may have a positive effect on grain yield. Thus, the use of fertilizers in rice cultivation, applied via leaf, can provide nutritional increase and consequent increase in productivity. Thus, this work aimed to evaluate the development and yield of rice, conducted in flood irrigation system after being submitted to foliar applications of mineral A (NPK; 13-02-44), mineral B (2% P) fertilizers. , 1% K, 0.7% B, 0.9% Mo) + 30% amino acids, 10% carbohydrates and organomineral fertilizer (70% humic substances; 11% organic carbon, 2% K, 1% P o). The treatments will consist of applications in isolation and combined with the foliar applications of fertilizers at commercially indicated doses, in vegetative stages V9 and V12 and reproductive stage R0. The production parameter and its components, such as plant height, number of panicles per weight and weight of one thousand grains were verified. The study was conducted on a rural property in the municipality of Terra Rica-PR with a completely randomized design with four replications. Data were evaluated by analysis of variance and means between treatments compared by the Scott Knott test at 5% significance. In the control treatment will not be applied any kind of fertilizer. The results showed that treatments with different fertilizers promoted increases in productivity, panicle number and plant height.