For initial application, 50-70 kg N/ha is sufficient, with a total of 100-120 kg N/ha over two applications. Excess nitrogen can lead to lodging, so the second application is made during the 3-4 leaf stage.
Ensure sufficient phosphorus, especially under cool, moist conditions during early development. A total of 40-45 kg P2O5/ha is required. Underfoot fertilisation improves youth development.
Sorghum needs 140-165 kg K2O/ha to improve stability, particularly important for long-growing, mass varieties.