Describe in brief about the Boron  - Micronutrients 

Boron is required in extremely small amounts in the range of 0.01 to 1.0 ppm. The actual amount may vary from crop to crop but seldom exceeds 33-56 kg of borax per hectare when broadcast (spread in the form of a shower from above) or 4.5 kg when applied in the rows.

• It influences cell development by affecting the polysaccharide formation and regulates Trans location of sugars across membranes.
• It affects the intake of calcium and its efficient utilisation by the plant.
• It acts as a regulator of the K⁺/Ca²⁺ ratio.
• It is intimately related to the absorption of nitrogen and is necessary in cell division.
• It appears to be fixed in plant tissues so that it cannot move to parts where it is most needed. As a result continuous supply is needed to meet plant requirement.
• If plant contains a large supply of potassium there is a boron deficiency.