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Development of Resin Disc Soil Testing in Rice Crop in Relation to Kinetics of Nutrient Adsorption on Resin

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Title Development of Resin Disc Soil Testing in Rice Crop in Relation to Kinetics of Nutrient Adsorption on Resin
Not Available
 
Creator SAMAR CHANDRA DATTA
SUNIL KUMAR SINGHAL
DEBASHISH MANDAL
 
Subject Disc resin, soil nutrients, soil testing
 
Description Not Available
The aim of this investigation was to develop a durable, rigid, and reusable resin disc for
soil testing with the hypothesis that a uniformly shaped disc of cation/anion exchange
resin placed in direct contact with the soil will accumulate ions from the soil by
processes similar to those for living plant roots in the natural soil–solution–plant continuum.
To develop regression equations for the relationship of resin-adsorbed quantity
(RAQ) to yield of rice, soils were collected before sowing from different plots of a rice
field where a fertility gradient had been created in the previous year by growing rice
with different doses of fertilizers. For resin-disc soil testing, a soil sample is made into a
saturated paste and placed in intimate contact with the resin disc. After 24 h (as decided
from the kinetic experiment), the resin disc–soil assembly was dismantled. Ammonium,
phosphate, sulfate, and potassium ions were extracted from the discs. Rice was grown
in those plots without any fertilizer, and yields were recorded. Regression analysis was
done between yield and nutrients adsorbed by the resin (NAR). The same soils were
alsoanalyzed for organic carbon, phosphate, sulfate, and potassium by the conventional
chemical extraction method. Multiple regression analyses of grain yield (Y) as the
dependent variable and resin-adsorbed N (RN), resin-adsorbed P (RP), resin-adsorbed
K (RK), and resin-adsorbed S (RS) as independent variables produced the following
relationships: Y = 5.95 + 5.13RN + 23.85RP – 2.4RK + 1.05RS, multiple R2 = 0.793.
The resin-disc method gave much better regression with rice yield than the conventional
chemical extraction method.
Not Available
 
Date 2020-03-05T08:39:34Z
2020-03-05T08:39:34Z
2012-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/33576
 
Language English
 
Relation Not Available;
 
Publisher Not Available