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Phosphorus dynamics and solubilizing microorganisms in acid soils under different land uses of Lesser Himalayas of India

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Title Phosphorus dynamics and solubilizing microorganisms in acid soils under different land uses of Lesser Himalayas of India
Not Available
 
Creator Ranjan Paul .
Raj Deo Singh
A. K. Patra .
D. R. Biswas
Ranjan Bhattacharyya
K. Arunkumar
 
Subject Not available
 
Description Not available
Although chemical and some soil physical properties have been studied under different land
uses of the Lesser Himalayas of India, very limited
information is available on soil biochemical properties. Hence we investigated phosphorus (P) fractions
[total P (TP), inorganic P (Pi), organic P (Po),
available P, microbial biomass P (MBP)], enzyme
activities [dehydrogenase, phosphatases, phytase],
phosphate solubilizing bacteria (PSB) and fungi
(PSF), and their correlations of acid soils (0–15 and
15–30 cm depths) under different land uses (viz,
organic farming, maize–wheat, apple orchard, undisturbed oak forest and uncultivated land of the Indian
Himalayas). All land use systems differed significantly for the P fractions, except TP. The highest
values for TP, Pi, available P and MBP were found in
soils under oak forest and lowest in uncultivated land.
However, Po content was highest in apple orchard.
The organic farming (organic manures field under
garden pea-french) bean cropping system
for ( 10 years) maintained highest activities of
dehydrogenase, acid phosphatase and alkaline phosphatase. The highest phytase activity and highest
numbers of PSB (99 9 103 g−1 soil) and PSF
(30 9 103 g−1 soil) were observed in the rhizosphere
soils of oak forest. Significant relationships between
soil P fractions and enzyme activities, except alkaline
phosphatase, were recorded in surface soil layer. PSB
and PSF population were also correlated significantly
with P fractions and enzyme activities. This would
lead us to understand the level of degradation of P
pools due to cultivation over forest system and the
suitable management practices needed for soil quality
restoration.
Not available
 
Date 2020-05-28T14:21:14Z
2020-05-28T14:21:14Z
2017-12-04
 
Type Research Paper
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/36528
 
Language English
 
Relation Not Available;
 
Publisher Springer