First irrigation to the wheat crop should be given at

✅ Explanation:
-CRI (Crown Root Initiation) stage is the ideal time for the first irrigation in wheat. This is when the crown roots, which are crucial for nutrient and water uptake, start to develop. Providing irrigation at this stage ensures proper establishment of the root system and supports healthy crop growth.

📌 Other Options Explanations:
-(b) Tillering stage: Tillering is the stage where the plant produces multiple shoots. While irrigation is important during this stage.
-(c) Jointing stage: This is the stage where the stem elongates and the first node becomes visible. Irrigation is crucial at this stage for stem development.
-(d) Dough stage: This is the grain filling stage. Irrigation at this stage is important for grain development.