Question

Match the following and choose the correct answer

Die back of citrus	P deficiency
Khaira disease of rice	Mo deficiency
Sickle leaf disease	Zn deficiency
Whip tail of Brassica	Cu deficiency

• A. A-3, B-2, C-4, D-1
• B. A-4, B-3, C-1, D-2
• C. A-3, B-2, C-1, D-4
• D. A-2, B-4, C-1, D-3

Answer 1

Answer:

B. A-4, B-3, C-1, D-2

1. Die-back of citrus

- Caused by: Zinc (Zn) deficiency

- Symptoms: Die-back of twigs and branches, yellowing of leaves, and reduced fruit production

- Treatment: Zinc sulfate or zinc oxide application

2. Khaira disease of rice

- Caused by: Manganese (Mn) deficiency

- Symptoms: Yellowing of leaves, stunted growth, and reduced grain yield

- Treatment: Manganese sulfate application

3. Sickle leaf disease

- Caused by: Manganese (Mn) deficiency

- Symptoms: Sickle-shaped leaves, interveinal chlorosis, and stunted growth

- Treatment: Manganese sulfate application

4. Whip tail of Brassica

- Caused by: Molybdenum (Mo) deficiency

- Symptoms: Distorted leaves with a whip-like shape, stunted growth, and reduced flower and seed production

- Treatment: Molybdenum trioxide or ammonium molybdate application

These deficiencies can be caused by various factors, including:

- Soil nutrient deficiencies

- pH imbalances

- Waterlogging or drought

- Soil contamination