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) Treatment of the plants with cytokinins
along with a small dose of nitrogenous fertilizer
(b) Removal of all yellow leaves and spraying
the remaining green leaves with 2, 4, 5
- trichlorophenoxy acetic acid
(c) Application of iron and magnesium to
promote synthesis of chlorophyll
(d) Frequent irrigation of the crop

Answer 1

The treatment that could be most beneficial to obtain maximum seed yield is:

(c) Application of iron and magnesium to promote the synthesis of chlorophyll

• The yellowing of leaves and a decrease in yield is due to Chlorosis.

• Chlorosis refers to the lack of production of chlorophyll.

• The deficiency of magnesium and iron also causes Chlorosis.

• Therefore, farmers should use iron and magnesium to promote the synthesis of chlorophyll.

Answer 2

Application of iron and magnesium to  promote synthesis of chlorophyll.

Option (C) is correct.

Explanation:

• The premature yellowing and reduced yield in pulse plants is known as chlorosis.
• In order to increase the yield and premature yellowing of a pulse crop it is treated with iron and magnesium.
• The yellowing in plants is caused in chlorophyll which is due to the deficiency of chlorophyll molecule.
• Such plants are treated with Mg and Fe to increase the synthesis of chlorophyll.
• Both Iron and Magnesium are an important part of the ring structure of chlorophyll molecule.
• Magnesium deficiency causes chlorosis and premature leaf abscission.
• Similarly iron deficiency causes the leaves to become chlorotic.

Also learn more

What are leucoplasts and what is their function  ?

https://brainly.in/question/6532820