Nitrogen mineralization of agroforestry tree mulches incorporated in dry land and temperate soils.

摘要

Nitrogen mineralization patterns of Leucaena leucocephala, Gliricidia sepium, Grevillea robusta and Cassia siamea mulches mixed with dry land and temperate soils were examined in pot trials and laboratory incubations to evaluate a biological index for predicting yield and N uptake of corn (Zea mays). In greenhouse trials Leucaena produced the greatest growth increase and N uptake in corn. Growth was suppressed by Grevillea incorporations, and seedling mortality occurred in Gliricidia treatments due to NH