Question

How much seed is required for sowing of coriander in one hectare area under irrigated condition ?

• A. 2 - 3 kg
• B. 5 - 10 kg
• C. 12 - 15 kg
• D. 20 - 22 kg

Hint:

Coriander Seed Rates: - Irrigated condition = $12--15\text{ kg/ha}$. - Rainfed condition = $20--25\text{ kg/ha}$. Always crush seeds into two mericarps before sowing!

Answer 1

The Correct Option is C

Step 1: Understanding the Question:
The question asks for the recommended seeding rate (in kg/ha) for sowing coriander (Coriandrum sativum) under irrigated cultivation.

Step 2: Key Agronomic Requirements of Coriander:

• Seed Structure: The commercial 'seed' of coriander is botanically a dry schizocarp fruit containing two mericarps. Seeds are crushed gently into two halves prior to sowing to promote uniform germition.

• Irrigated Condition Seed Rate: $12--15\text{ kg/ha}$.

• Rainfed Condition Seed Rate: $20--25\text{ kg/ha}$ (higher seed rate compensates for lower soil moisture availability and poor seedling emergence).

Step 3: Detailed Explation:

• Sowing coriander under irrigated conditions allows for uniform soil moisture, ebling high germition percentages and optimal seedling survival.

• A seed rate of $12--15\text{ kg/ha}$ provides an ideal plant population when sown at a row spacing of $30\text{ cm} \times 10\text{ cm}$.

• Using excess seed under irrigated conditions causes overcrowding, spindly stem growth, and increased susceptibility to powdery mildew (Erysiphe polygoni).

Step 4: Fil Answer:
The recommended seed rate for irrigated coriander is $12--15\text{ kg/ha}$. Therefore, option (C) is the correct choice.