Supplementary report on soil fertility under UNDP (SF) project of soil fertility survey and research in the Philippines a draft report prepared for submission to the Government of the Philippines - Chu, H. F. (1969)
The design of fertilizer field experiment on rice during 1952-1964 -- Corn fertilizer trials in the Philippines (1964-1968) -- Pilot scheme for fertilizer distribution in the Philippines -- Soil-crop-climate interaction in soil fertility -- Phosphate deficiency areas in Central Plain of Luzon.
Mimeographed.
Keywords: Soil fertility; Soil research -- Philippines