Crown root initiation (15–20 days): irrigate and top-dress the remaining nitrogen. Active tillering (35–40 days): irrigate; second hand weeding at 35 days. Flowering (50–55 days): irrigate — a most critical stage. Grain filling (70–75 days): irrigate.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Wheat – Water management; top dressing, p. 123
