Relações de causa e efeito em feijoeiro cultivado em sistema de integração lavoura-pecuária

Abstract

The challenge of modern agriculture has been to produce in an efficient, stable and profitable way. The Crop-Livestock Integration System is an alternative to ensure this model of agriculture through intensive use of available resources in the agroecosystem and crop diversification. Bean culture can be included in the ILP system to meet crop rotation and as an additional source of producer income. One of the nutrients required in greater quantity by the bean is nitrogen. The purpose this study was to identify the multivariate linear relations betwee: chlorophyll content (a, b and total), and productivity components with productivity in beans in a croplivestock integration system. The experiment was performed in the period from January 2016 to April 2016 on property located in the municipality of Abelardo Luz-SC. The experimental design was randomized blocks in a bifactorial 2 X 2 scheme with three replications. The data collected were from the bean crop, cultivar IAC Milênio. Chlorophyll a, b and total collections were performed using a chlorophyll meter (ClorofiLOG®, CFL 1030) in V4, R5, R6, R7 e R8 stages. At harvest, in the same plants where the chlorophyll was evaluated, the yield components of the bean culture (number of pods plant-1, number of grains pods-1, height of first pod insertion, weight of 1000 grains and yield of plant-1 grains). Chlorophyll contents collected at different stages of common bean, cultivated in the “safrinha”, in a crop-livestock integration system can not be used to predict the production of grains per plant. The income components (AP, AIPV, NVP, NGV e PMG) can be used to estimate the production of grains per bean plant. The most promising component for select plants to increase weight is the NVP, because it exerts both direct and indirect effect on RGP.