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Novel slow-releasing micronutrient fertilizers. I. Zinc Compounds

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Title Novel slow-releasing micronutrient fertilizers. I. Zinc Compounds
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Creator Ray, S.K., Varadachari, Chandrika and Ghosh, Kunal
 
Subject Slow-releasing zinc fertilizer, polyphosphates, paddy yield
 
Description Not Available
A new concept for slow-releasing micronutrient compounds is proposed, based on the short chain polyphosphate framework. The development of a zinc fertilizer, the first of such compounds are described. Kinetic studies indicate that zinc phosphate polymerize in several linear stages. The polyphosphates are in general, extremely water soluble and hygroscopic; moreover, those with solubility contain a high proportion of unavailable Zn2+. Initially, it was not possible to obtain zinc polyphosphate having low water solubility and high nutrient availability. Solubility hygroscopicity were attributed to free acid groups on the polyphosphate chain; neutralization of these groups indeed removed these undesirable characteristics. The fertilizers formulated have average chain length of 2.35, contain some crystalline phases, have low water solubility, and almost completely soluble in dilute HCl, citrate, diethylenetriaminepentaacetate. P1 experiments indicate that the zinc polyphosphate is either equivalent to or better than ZnSC
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Date 2020-06-19T10:42:58Z
2020-06-19T10:42:58Z
1993-06-01
 
Type Research Paper
 
Identifier Ray, S.K., Varadachari, Chandrika and Ghosh, Kunal (1993). Novel slow-releasing micronutrient fertilizers. I. Zinc Compounds. Industrial & Engg. Chemistry Research (American Chemical Society), 32(6): 1218-1227.
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http://krishi.icar.gov.in/jspui/handle/123456789/37279
 
Language English
 
Relation Not Available;
 
Publisher American Chemical Society