If a soil test is not available, apply 80:40:40 kg NPK per hectare. Apply half the N and all the P and K basally, placed in the sowing line; top-dress the remaining half of N at crown root initiation (15–20 days after sowing). For soils deficient in zinc and sulphur, apply 37.5 kg ZnSO4 and 40 kg S per hectare basally.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Wheat – Application of fertilizers; top dressing, pp. 122–123
Region
Tamil Nadu
Last updated
2026-11-04
Irrigation at critical stages
Wheat needs 4–6 irrigations depending on soil and rainfall, with at least 5 at these critical stages: immediately after sowing; crown root initiation (15–20 days); active tillering (35–40 days); flowering (50–55 days); and grain filling (70–75 days). Crown root initiation and flowering are the most critical. Avoid water stagnation at germination.
If no herbicide is used, give two hand weedings, on the 20th and 35th day after sowing.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Wheat – Weed management (ii), p. 123
Region
Tamil Nadu
Last updated
2026-11-04
Pre-emergence herbicide
Spray isoproturon at 500 g/ha as pre-emergence on the 3rd day after sowing, followed by one hand weeding on the 35th day.
Follow the instructions on the product label. Consult your local Agriculture Officer before use.
Pending expert review
Source
Crop Production Guide – Agriculture 2020 (Directorate of Agriculture, Tamil Nadu & Tamil Nadu Agricultural University (TNAU)), Wheat – Weed management (i), p. 123
