Buscar
Itens para a visualização no momento 1-3 of 3
Relações entre indicadores de qualidade do solo e a produtividade das culturas em áreas com agricultura de precisão
(Universidade Federal de Santa Maria, 2007-02-16)
The estimative of yield variability is an important tool to soil management decisions and to investigate yield limiting factors. Tools of precision farming as yield mapping and soil sampling using GPS makes possible identify ...
Retenção de água da chuva na palha, solo e dossel vegetativo de milho e feijão
(Universidade Federal de Santa Maria, 2007-12-17)
The water is the most important factor and, at the same time, the more limitant than the plant needs for its development. Short periods of hidric stress can reduce
crop productivity. In this way, the importance of knowing ...
Eficiência do calcário calcítico e dolomítico na correção da acidez de solo sob plantio direto
(Universidade Federal de Santa Maria, 2007-02-23)
Liming is used to decrease soil acidity and increase exchangeable calcium and magnesium levels, but it may impaired calcium and magnesium ratios with continuous use of dolomitic or calcitic lime. The aim of this work is ...