<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>19</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">van Noordwijk, M</style></author><author><style face="normal" font="default" size="100%">Spek, L.Y.</style></author><author><style face="normal" font="default" size="100%">P Purnomosidhi</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%">Quantifying Shallow Roots Tree Geometry Makes Root Research Easy.</style></title><secondary-title><style face="normal" font="default" size="100%">Agroforestry Today</style></secondary-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">agroforestry-systems</style></keyword><keyword><style  face="normal" font="default" size="100%">equations</style></keyword><keyword><style  face="normal" font="default" size="100%">mathematical-models</style></keyword><keyword><style  face="normal" font="default" size="100%">methodology</style></keyword><keyword><style  face="normal" font="default" size="100%">multipurpose-trees</style></keyword><keyword><style  face="normal" font="default" size="100%">plant-competition</style></keyword><keyword><style  face="normal" font="default" size="100%">research</style></keyword><keyword><style  face="normal" font="default" size="100%">root-systems</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1995</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.worldagroforestry.org/sea/publication?do=view_pub_detail&pub_no=MA0006-04</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">2</style></volume><pages><style face="normal" font="default" size="100%">9-11</style></pages><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">A new method being developed for root research is described based on a fractal model. An equation was developed to derive the relation between total size of the root system and diameter of the proximal roots for 2 extreme branching patterns - dichotomous and herringbone. The protocol uses proximal root diameters and stem diameter at breast height to provide a tentative index of shallow rootedness (root competitiveness), tests for the fractal characteristics of root branching, and measurements of model parameters (internode lengths as a function of root diameter and the proportionality factor (alpha) between total cross-sectional surface areas, before and after branching). Preliminary tests of the method were done on 18 multipurpose trees on an acid ultisol in northern Lampung, Indonesia (mostly in a home garden, and about 6 yr old). Root data are given for these. The method is relevant to the study of competition between trees and crops in agroforestry systems.</style></abstract><issue><style face="normal" font="default" size="100%">7</style></issue><call-num><style face="normal" font="default" size="100%">MA0006-04</style></call-num></record></records></xml>