Nitrogen uptake by deepwater rice during the preflood and flooded phases, in relation to drymatter and grain production - Puckridge, D.W.; Wiengweera, Amara; Thongbai, Pongmanee; Sangtong, Prapit; Sattarasart, Acharee; Kongchum, Manoch; Runtan, Suphap (Elsevier, 1991)