Efeito de micronutrientes e do cobalto na producao e composicao quimica do arroz, milho e soja em solo de cerrado [latossolo vermelho escuro, Oryza sativa, Zea mays, Glycine max, Brasil]
Effect of micronutrients and cobalt on the yield and chemical composition of rice, maize, and soybean grown on cerrado soil [dark red latosol, Oryza sativa, Zea mays, Glycine max, Brazil]