Whenever one irrigation is available, the wheat crop should be irrigated at:

Correct option is C

✅ (c) Crown Root initiation stage: • The Crown Root Initiation (CRI) stage occurs approximately 20-25 days after sowing and is critical for wheat development. • Irrigation at this stage promotes the formation of crown roots, which are essential for nutrient and water uptake. • If only one irrigation is possible, applying water at the CRI stage ensures optimal root development and can significantly influence yield.