Atributos agronômicos e composição química do feno de cultivares de soja em condições de sequeiro

Abstract

The soybean (Glycine max (L) Merrill) is a kind of agricultural use of great interest worldwide and thanks to new technologies such as the application of nutrients can be improved characteristics of economic interest that culture. Currently , its cultivation is expanding in almost all Brazilian territory , including the North and Northeast regions . For the region 's rugged southern Pernamuco, in which it appears important dairy region of the state, soy can be an alternative planting for farmers and ranchers because of its great potential for animal feed. This study aimed to identify soybean cultivars adapted and high yield potential with the application of nutrients and fitoestimulante, seeking its use by local farmers. The study was conducted at the site Pintada municipality Garanhuns, Pernambuco, employing nine cultivars ( BRS MG 800A, BRS MG 790A, BRS MG 752S, BRS 326, BRS Sambaíba , BRS CARNAÚBA , BRS Tracajá , BRS 325RR and BRS 279 RR), application of nutrients (Nitrogen, Phosphorus, Calcium, Sulfur, Boron, Manganese, Molybdenum, Cobalt) and fitoestimulante (Stimulate ®) and evaluated features from emergence to maturity, using a randomized block design with four replications , a split plot design . It was found that BRS MG 790 , BRS 326 and BRS 279 and BRS Carnauba RR have high germination percentage, leaf area, with high biological productivity , straw yield , growth rate and good chemical composition of hay for ruminant nutrition particularly when applied commercial products Alta®, Phytogard®, Raynitro® and Quimifol® and the doses of 0.40 and 0.88 L.ha-1 fitoestimunate . However, more studies should be conducted so that soy is consolidated as an alternative planting for farmers.