Question

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?

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

Answer 1

The correct option is A Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5-trichlorophenoxy acetic acid.

Auxins promote the abscission of older mature leaves and fruits. 2,4,5-trichlorophenoxyacetic acid is an example of auxin. Removal of all yellow leaves and spraying the remaining of the leaves with 2, 4, 5 trichlorophenoxyacetic acid could be most beneficial to obtain maximum seed yield from the premature yellowing of leaves of a pulse crop with decreased yield.