Which widespread nutritional deficiency disorder in paddy rice, discovered by Dr. Y.L. Nene at Pantnagar in 1966, manifests as chlorosis followed by reddish-brown rust-like pigmentation on leaves?

Question

Which widespread nutritional deficiency disorder in paddy rice, discovered by Dr. Y.L. Nene at Pantnagar in 1966, manifests as chlorosis followed by reddish-brown rust-like pigmentation on leaves? (धान में पत्तियों पर जंग जैसे कत्थई/लाल-भूरे धब्बे बनने वाला प्रसिद्ध 'खैरा रोग' (Khaira Disease) किस पोषक तत्व की कमी से होता है?)

Think Extraordinary · Accepted Answer

Correct Answer: Option A. Khaira Disease (Zinc deficiency). Explanation: Khaira disease is caused by Zinc (Zn) deficiency in calcarious or waterlogged alkaline paddy soils; it is corrected by foliar spraying of 5 kg Zinc Sulphate + 2.5 kg Slaked Lime per hectare in 500 litres of water.

Answer

Option B: Whiptail disease

Answer

Option C: Brown spot disease

Answer

Option D: Bacterial leaf blight

Manures, Fertilizers, and Plant Nutrition

Which widespread nutritional deficiency disorder in paddy rice, discovered by Dr. Y.L. Nene at Pantnagar in 1966, manifests as chlorosis followed by reddish-brown rust-like pigmentation on leaves?