CONTROLE QUIMICO DE PLANTAS INVASORAS NO CULTIVO DO FEIJÃO-CAUPI (Vignaunguiculata(L.) Walp.).

Abstract

The cowpea (Vignaunguiculata (L.) Walp.), Also known as macassa beans are widely consumed and Inatura is a culture of great socio-economic value, cultural and nutrition, the result of a well adapted physiology various environmental conditions, as there is great source of protein. This study aims to evaluate the influence of the use of herbicides on the growth characteristics, weed control and phytotoxicity. . The experiment was carried out and conducted in rainfed conditions and field conditions, the Department of Agronomy of Agricultural Sciences Center (CCA), Campus II of the Federal University of Paraíba (UFPB), located in the municipality of Areia-PB. The experiment was conducted in a randomized blocks, two herbicides were applied (Afalon SC and ES TARGA 50) with seven doses, isolated and associates, ranging emAFALON SC 50% and 75%; ES50 TARGA 50% and 75%; Afalon SC TARGA + 50% + 75% ES50 and 75% 50% + 75% + 75%, respectively. In addition to these two witnesses: one with and one without manual weeding and herbicide without weeding, with four replications each. Treatments were applied at 21 days. The variables analyzed every 7 days were phytotoxicity, weed control, plant height, stem diameter, number of leaves and production vargem and grains. The height growth was higher in the treatment without control; The variables stem diameter and number of bean leaves were higher in the weeded treatment. Treatment 6 (Afalon 75%) was the one that showed efficient weed control and still showed low phytotoxicity to the crop. The largest absolute weight of pods and grain was obtained in the weeded treatment and treatments 5 (Afalon SC (50%) and 7 (TARGA 50% and Afalon 75%)