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The evaluation of potassium metaphosphate as a source of potassium for potatoes with special references to foliar diagnosis, yield and quality of tubers

Published online by Cambridge University Press:  27 March 2009

D. Lachover  and
Helena Feldhay
D. Lachover
Affiliation:
Division of Plant Chemistry, The Volcani Institute of Agricultural Research, Rehovot
Helena Feldhay
Affiliation:
Division of Plant Chemistry, The Volcani Institute of Agricultural Research, Rehovot
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Extract

1. The availability of K in potassium metaphosphate was investigated in an experiment with large pots using a red sandy soil, low in exchangeable potassium. Potatoes were grown. The effects of potassium metaphosphate in three different granule sizes, applied at two rates, were compared with those of equivalent potassium chloride and potassium sulphate.

2. Characteristic deficiency symptoms appeared in plants receiving no K and the crop responded to K fertilizer in potassium concentration, yields of tubers, and dry matter, and starch concentrations.

3. Potassium metaphosphate, regardless of granule size and of application rate, was as effective as potassium chloride and potassium sulphate in giving normal development of potato plants, high potassium uptake in the foliage, and yield of tubers.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 67 , Issue 2 , October 1966 , pp. 281 - 285
Copyright
Copyright © Cambridge University Press 1966

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References

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