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Nitrogen deficiency in Cotton:-
A pale yellowish green colour, coupled with reduction in leaf size is the most striking symptom of nitrogen deficiency in cotton. Eventually, the cells become disorganised accompanied by development of red pigments called anthocyanins. Nitrogen deficient plant is also characterized with little vegetative growth, lack of vigour coupled with stunted growth.
Control:- Spray 19:19:19 @ 100 gm per pump.
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Role of nitrogen in plants:- Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis). It is also a major component of amino acids, the building blocks of proteins. Without proteins, plants wither and die. Some proteins act as structural units in plant cells while others act as enzymes, making possible many of the biochemical reactions on which life is based. Nitrogen is a component of energy-transfer compounds, such as ATP (adenosine triphosphate). ATP allows cells to conserve and use the energy released in metabolism. Finally, nitrogen is a significant component of nucleic acids such as DNA, the genetic material that allows cells (and eventually whole plants) to grow and reproduce. Without nitrogen, there would be no life as we know it.
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