<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cody, M.</style></author><author><style face="normal" font="default" size="100%">McGill, W.</style></author><author><style face="normal" font="default" size="100%">J Alegre</style></author><author><style face="normal" font="default" size="100%">Gill, D.</style></author><author><style face="normal" font="default" size="100%">Kass, D.</style></author><author><style face="normal" font="default" size="100%">Rothwell, R.</style></author></authors><secondary-authors><author><style face="normal" font="default" size="100%">asb@cgiar.org</style></author></secondary-authors></contributors><titles><title><style face="normal" font="default" size="100%">Patrones de liberación y distribución de nitrógeno en barbechos mejorados.</style></title><secondary-title><style face="normal" font="default" size="100%">Agroforestería en las Américas</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Costa Rica</style></keyword><keyword><style  face="normal" font="default" size="100%">green manure</style></keyword><keyword><style  face="normal" font="default" size="100%">lignin</style></keyword><keyword><style  face="normal" font="default" size="100%">nitrogen mineralization</style></keyword><keyword><style  face="normal" font="default" size="100%">Peru</style></keyword><keyword><style  face="normal" font="default" size="100%">polyphenols</style></keyword><keyword><style  face="normal" font="default" size="100%">soil.</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2000</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://web.catie.ac.cr/informacion/RAFA/rev26/arti18-a.htm</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%"> 26</style></volume><language><style face="normal" font="default" size="100%">Portuguese</style></language><abstract><style face="normal" font="default" size="100%">Patterns of N release from the prunings of two tree species (Inga edulis and Centrosema macrocarpum) and one herbaceous legume (Colubrina glandulosa) in relation to Investigate Were the chemical Characteristics of the materials. Also, the soil N distribution in slash and burn WAS Following documented. Lignin + polyphenols to nitrogen ratio (L + PF: N) WAS better than coal to nitrogen ratio (C: N) as a predictor of the quantity of N release. In contrast to the exponential decay Assumptions of models, Were retarded mineralization rates in most cases. Slash and burn disturbance resulting in a mineral N flush in the first meter of soil; Some of This N leached below WAS one meter.</style></abstract></record></records></xml>