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  • Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most benefi

Farmers in a particular region were 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?

Option: 1

Frequent irrigation of the crop


Option: 2

Treatment of the plants with cytokinins along with a small dose of nitrogenous fertiliser


Option: 3

Removal of all yellow leaves and spraying the remaining green leaves with    2,4,5-trichlorophenoxy acetic acid


Option: 4

Application of iron and magnesium to promote synthesis of chlorophyll


Answers (1)

best_answer

 If a pulse crop possesses premature yellowing of leaves and decreases in yield an application of magnesium and iron to promote synthesis of chlorophyll may become most beneficial to overcome the problem and to obtain maximum seed yield.

Magnesium is an important part of the ring structure of chlorophyll molecules and its deficiency causes chlorosis and premature leaf abscission.

In iron deficiency also, the leaves become chlorotic because iron is required for the synthesis of some of the chlorophyll protein complexes in the chloroplast.Hence, the correct answer is option 4.

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Gaurav

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