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Release of phosphorus from laboratory made coated phosphatic fertilizers in soil under different temperature and moisture regime.

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Title Release of phosphorus from laboratory made coated phosphatic fertilizers in soil under different temperature and moisture regime.
Not Available
 
Creator Sarkar, A., Biswas, D.R., Datta, S.C., Manjaiah, K.M. and Roy, T.
 
Subject Phosphorus , Coated fertilizer products, Release pattern , Olsen reagent ,Temperature and moisture regime
 
Description Not Available
The aim of the present study was to see the
release pattern of phosphorus from laboratory made coated
phosphatic fertilizers in soil under different temperature and
moisture regimes. Four fertilizer materials were prepared by
reacting ammonia with phosphoric acid (Product - A and
Product - B) and rock phosphate with sulphuric and phosphoric
acid (Product - C and Product - D). These materials
were coated with polyvinyl alcohol, liquid paraffin and
methyl oleate at two levels (2 and 3 %). The coated phosphatic
fertilizers along with diammonium phosphate were
applied @ 500 mg P kg - 1 soil and incubated at two temperatures
(20 and 30 C) and two moisture regimes (10 and
20). Results indicated that release of P showed a decline
trend from first to fourth hour of incubation, then increased
and finally reached to a steady state in all the products,
except Product - C. The release pattern followed the order:
diammonium phosphate[Product - B][Product - A ][Product - D]
[Product - C], corresponding with the mean values
of 337.4, 227.9, 211.6, 147.1 and 69.0 mg P kg - 1 soil,
respectively. Results also showed the superiority of polyvinyl
alcohol coated products over liquid paraffin and
methyl oleate coated products. The rate of release of P was
greater with increase in temperature from 20 to 30 C.
Thus, it may be concluded that laboratory made coated
fertilizers could be used as a source of P which would
release P slowly than the water soluble P like diammonium
phosphate and supply P for a longer period that synchronizes
the crop demand and enhances P use efficiency.
Not Available
 
Date 2021-07-16T09:13:43Z
2021-07-16T09:13:43Z
2017-12
 
Type Research Paper
 
Identifier Sarkar, A., Biswas, D.R., Datta, S.C., Manjaiah, K.M. and Roy, T. 2017. Release of phosphorus from laboratory made coated phosphatic fertilizers in soil under different temperature and moisture regime. Proceeding of National Academy of Sciences, India Section B: Biological Sciences, 87(4): 1299-1308.
2250-1746
http://krishi.icar.gov.in/jspui/handle/123456789/48412
 
Language English
 
Relation Not Available;
 
Publisher springer india