@INBOOK {GHUMAN:1984, title = {Effects of soil moisture regime on plant-water relations and yield of tropical root crops}, author = {Ghuman, B. S. and Lal, R. }, year = {1984}, type = {Twelfth Congress, International Commission on Irrigation and Drainage}, note = {RTB; Root and Tuber.; QR.38-R.72, 1,141-1,156}, }