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  Iron and Boron

Iron and Boron:

Iron:

Soil is usually not deficient in iron. Iron is a constituent of different flavor-proteins and forms a portion of enzymes like peroxidases, catalases, and cytochromes. It plays a significant role in the electron transport system of photosynthesis being part of the ferredoxin and cytochrome.

Deficiency symptoms:

a. It causes interveinal chlorosis and the leaves become white or yellow.
b. It impairs aerobic respiration and associated procedures.
c. Fruit trees mainly exhibit sensitivity to iron deficiency.

Boron:

Leaves and seeds need boron. It is essential for uptake and utilization of Ca++ ions, pollen germination, cell differentiation and translocation of carbohydrates. It plays a significant role in nitrogen metabolism, fat and hormone metabolism.

Deficiency symptoms:

a. It causes brown heart-rot disease in the beetroots.
b. In apple internal tissues turn into corky.
c. It causes leaf to curl and become fragile.
d. Premature fall of flowers and fruits.

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