Question

farmer in a particular region was concerned that premature yellowing of leaves of a pulse crop might cause a decrease in the yield which treatment could be most beneficial to obtain maximum seed yield

Answer 1

Premature yellowing of leaves of a pulse crop due to chlorosis and yield can be increased by application of iron and magnesium.

Explanation:

1. Chlorosis is a diseased condition in which leaves are yellow due to an infection or mineral deficiency that prevents chlorophyll formation.
2. Iron is very important for chlorophyll synthesis. It plays an important role in ETS in photosynthesis and respiration. Its deficiency leads to chlorosis.
3. Magnesium is very important part of tetrapyrolic chlorophyll. It is found in all the green parts of the plant and is essential for photosynthesis. Its deficiency leads to interveinal of leves resulting in defoliation.
4. Farmer can increase pulse crop yield by supplying iron and magnesium in soil.