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Studies on copper deficiency and toxicity symptoms in some common crops of Gujarat (India)

Published online by Cambridge University Press:  27 March 2009

V. Neelakantan  and
B. V. Mehta
V. Neelakantan
Affiliation:
Institute of Agriculture, Anand (India)
B. V. Mehta
Affiliation:
Institute of Agriculture, Anand (India)
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Extract

1. Symptoms of copper deficiency and toxicity were studied in guar, bottle gourd, eggplant and blue panic grass using sand culture technique.

2. The visual deficiency symptoms are: curling of the young leaves along the margins, chlorosis of the leaflets, necrotic spots on the leaves and drying of very young leaves in guar; loss of turgidity and drooping of lower leaves followed by chlorosis and drying of leaves in bottle gourd; faint green colour of the leaves, chlorosis of the outer rim of the older leaves, white necrotic spots and leaf scorch in eggplant; yellowish green colour of leaves, brownish white spots and depressed growth in blue panic grass.

3. The toxicity symptoms are: stunted growth, drying of the lower leaves and formation of few seedless pods in guar; chlorosis of the lower leaves and marked stunted growth in bottle gourd; dull green colour and chlorosis of the leaves in eggplant; stunted growth, leaf chlorosis and burning appearance of the plant in blue panic grass.

4. There is an increase in copper uptake with increase in the rates of application of copper.

5. There is a decrease in. the molybdenum content with increase in copper applications indicating the inverse copper-molybdenum relationship.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 56 , Issue 3 , June 1961 , pp. 293 - 298
Copyright
Copyright © Cambridge University Press 1961

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