Influence of poultry manure on phosphorus availability and the standard phosphate requirement of crop estimated from quantity-intensity relationships in different soils.
Bioresour Technol
; 85(3): 317-22, 2002 Dec.
Article
in En
| MEDLINE
| ID: mdl-12365501
ABSTRACT
Twelve samples comprising of non-calcareous, calcareous and acidic soils were used to study P availability parameters and standard phosphate requirement (SPR) in the presence and absence of poultry manure (PM). Adsorption of P and phosphate potential decreased while Olsen extractable P increased by PM addition, the extent varying with the type of soil. The calculated SPR to attain soil solution concentration of 0.2 microg P ml(-1) was invariably higher in fine textured soils. Acid and calcareous soils registered higher SPR compared to non-calcareous soils. PM addition lowered the SPR in all the soils. The observed P supplementation through PM ranged from 11.6% to 100% signifying no fertilizer P need in the latter. Calibration curves were drawn for calculating the SPR for a given soil solution P concentration without and with the addition of PM.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Phosphates
/
Phosphorus
/
Soil
/
Soil Microbiology
/
Manure
Type of study:
Diagnostic_studies
Limits:
Animals
Language:
En
Journal:
Bioresour Technol
Journal subject:
ENGENHARIA BIOMEDICA
Year:
2002
Document type:
Article
Affiliation country:
India