Irrigation plays a major role in achieving good wheat yields in India. Even if farmers use the best seeds and fertilizers, the crop will suffer if water is not given at the right time. Wheat requires water at specific growth stages, and timely irrigation can increase the yield by a large margin. Giving water too early, too late, or too frequently can affect tillering, root growth, and grain filling. Therefore, understanding the correct irrigation schedule is very important for every wheat-growing farmer.
The first and most important irrigation is the Crown Root Initiation (CRI) stage, which occurs around 18–21 days after sowing. At this stage, the plant starts developing deeper and stronger roots. If the crop does not receive water at CRI, it becomes weak, produces fewer tillers, and the final yield reduces significantly. Farmers in many regions consider CRI irrigation as the foundation of the entire wheat crop.
The second irrigation is given at the tillering stage, around 35–40 days after sowing. This is when the plant increases its number of tillers, which later turn into wheat spikes. Adequate water at this stage supports healthy tiller formation. If the field remains dry, the crop may produce fewer tillers, directly reducing the number of ears and final grain count.
The third irrigation is required at the jointing or stem-elongation stage, around 60–65 days after sowing. During this period, the plant starts growing vertically, forming nodes and internodes. Water at this stage helps in strong stem development and supports the movement of nutrients within the plant.
The fourth irrigation is needed at the booting or pre-heading stage, usually around 80–85 days after sowing. At this time, the wheat head is forming inside the leaf sheath. Lack of water during this stage can result in incomplete head formation and poor grain set.
The fifth irrigation is given at the flowering or heading stage, around 90–95 days after sowing. This stage is very sensitive because water stress can affect pollen formation and fertilization, leading to fewer grains per spike. Timely irrigation ensures proper flowering and grain setting.
The final irrigation is needed at the milk or grain-filling stage, around 110–115 days after sowing. Water at this time helps grains become well-filled and heavy. If the field remains dry, the grains may shrink and become light, reducing total yield.
While irrigation timing is important, farmers should also avoid over-irrigation. Too much water can cause lodging, root rot, and increased disease pressure. Wheat prefers moist but well-drained soil, not standing water. Light irrigation is better than giving excessive water in one go. Farmers using canal water should plan carefully to ensure water is available during the critical stages mentioned above.
Soil type also plays a role. Sandy soils need more frequent but lighter irrigation, while clay soils can hold water longer. Farmers should regularly check soil moisture by digging a small pit near the root zone.
In simple words, the key irrigations in wheat are at CRI, tillering, jointing, booting, flowering, and grain filling. Giving water at these stages ensures healthy growth, good grain set, and higher yield. With proper planning and timely irrigation, farmers can achieve a strong and productive wheat crop.
