Question

Farmers in a particular region were concerned that pre-mature yellowing of leaves of a pulse crop might cause decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

• A. Frequent irrigation of the crop
• B. Treatment of the paints with cytokinin's along with a small dose of nitrogenous fertilizer
• C. Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5- trichlorophenoxy acetic acid
• D. Application of iron and magnesium to promote synthesis of chlorophyll

Answer 1

The Correct Option is D

Premature yellowing of leaves is often associated with chlorophyll deficiency, which can be caused by a lack of essential nutrients like iron and magnesium. Chlorophyll is crucial for photosynthesis, and its synthesis depends on the availability of these nutrients. By applying iron and magnesium, you can potentially address the underlying issue of chlorophyll deficiency and promote healthy green leaves capable of photosynthesis, ultimately contributing to better seed yield. While the other options may have some benefits, addressing the nutrient deficiency is a more direct approach to combat leaf yellowing and improve overall plant health and seed yield. 

So, the correct option is (D): Application of iron and magnesium to promote synthesis of chlorophyll