Competição da cultura do feijoeiro em presença de soja guaxa

Abstract

Beans (Phaseolus vulgaris L.) are a legume that originated in the Americas and are widely consumed by humans around the world. In Brazil it is one of the main sources of protein as part of the diet of a large part of the population, and the country is one of the world's largest bean producers. Several factors can interfere in the development and production of bean grains such as competition for pests, diseases and weeds. Among the most frequent weed species in the bean crop are the Bidens pilosa, Brachiaria plantaginea and Euphorbia heterophylla. However in recent years a new plant has been becoming a problem for bean culture. These areGlycine max plants. The objective of this work is to evaluate the competition of soybean volunteer plants with the bean crop. The experiment will be carried out at the experimental farm of the Universidade Tecnológica Federal do Paraná, Campus Dois Vizinhos. The design used will be of randomized blocks. The treatments will be composed of different populations of volunteer soybean being 0, 4, 6, 8, 11 and17 plants per m² withdean culture. The analyzed variables will be: leaf area, plant height, dry matter, number of pods per plant, number of grains per pod and mass of grains. The weed in the densities tested did not present significant interference on the bean crop.