1995-01-01 Sound crop and soil management such as the use of fertilizers and lime, pest and disease control, optimum planting densities and patterns, selection of appropriate crop varieties among others are fundamental to diminish soil erosion and achieve greate ryields. From the study it may be concluded...
关键资源1990-01-19 "Mindanao Baptist Rural Life Center, Mag-uugmad Foundation, Incorporated/World Neighbors." Papers presented at the Workshop on Sustainable Agriculture in the Uplands, held in the Philippines from Aug. 25 to Sept. 9, 1989.