MULTI-SEASONAL NITROGEN RECOVERIES FROM CROP RESIDUE IN SOIL AND CROP IN A TEMPERATE AGRO-ECOSYSTEM.

In conservation tillage systems, at least 30% of the soil surface was covered by crop residues which generally contain significant amounts of nitrogen (N).However, little is known about the multi-seasonal recoveries of the N derived from these crop residues in soil-crop systems, notably in northeastern China.In a temperate agro-ecosystem, 15N-label

ABSTRACT The objective of this study was to investigate the biochemical mechanisms associated with isolated and/or concurrent actions of drought and soil salinity in seedlings of coconut tree, through the accumulation of organic solutes (soluble carbohydrates, soluble amino N and free proline) in leaves and roots.The door-swings experiment, conduct