Improving sub-optimal soil classes for high yields:landclassification for coconut

Somasiri, L.L.W.2014-06-032014-06-031995House seminar held at CRI, 1995:p...https://dl-cri.nsf.gov.lk//handle/1/3726SoilsSoil improvementNut yieldSub optimal soil classesImproving sub-optimal soil classes for high yields:landclassification for coconut