Efeito da cobertura do terreno em laranjal sobre as temperaturas extremas do ar

Efeitos da cobertura e da incorporação ao solo, imediatamente antes do plantio, de diferentes formas de matéria orgânica não decomposta, na cultura do feijoeiro

“…Bons resultados, geralmente com aumentos significativos de rendimento, têm sido observados com a cobertura morta ("mulch"), especialmente em regiões tropicais e subtropicais (2,7). Poucas são, contudo, as referências à incorporação ao solo de matéria orgânica recém-cortada e seus efeitos em culturas anuais ou perenes.…”

Effect of dry Organic Matter on Growth and Yield of Beans (Phaseolus vulgaris L.)

“…It is recognized that the soil incorporation of dry organic matter could have acted as an important factor in improving the physical properties of the soil such as its water-holding capacity (Kononova, 1961;Miyasaka et al, 1966) and heat regime (Camargo et al, 1961;Medcalf, 1956;Miyasaka et al, 1966). However, in the present experimental conditions the most noticeable influence seemed to be associated with a rise of the nutrient supply to the soil.…”

“…Previous experiments have shown the beneficial effects of certain soil amendments, such as organic matter superficially incorporated or applied as a mulch, in minimizing the occurrence of extreme soil temperatures, increasing soil water retention, and improving the physical and chemical properties of agricultural soils. (Camargo et al, 1961;Kononova, 1961;Medcalf, 1956;Miyasaka et al, 1965 and1966).…”