Premium
Persistence of Manure Phosphorus Availability in Calcareous Soil
Author(s) -
Abbott J. L.,
Tucker T. C.
Publication year - 1973
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1973.03615995003700010022x
Subject(s) - agronomy , calcareous , manure , loam , hordeum vulgare , environmental science , medicago sativa , fertilizer , phosphorus , soil water , chemistry , biology , poaceae , soil science , botany , organic chemistry
Reappraisal of animal manure as fertilizer has shown manure to be an effective P source in calcareous soils. Correlations for data from cotton ( Gossypium hirsutum ) and barley ( Hordeum vulgare ) experiments indicated manure benefits to be largely the result of providing available P to the crop. Residual effects of manure P were measured by alfalfa ( Medicago sativa ) P uptake, yield and soil analyses following 4 years of cropping to cotton and 1 year of barley. Soluble P in Mohave clay loam manured at 22 metric tons/ha 4 years before sampling was above that of unmanured soil. Manuring at 2‐ or 3‐year intervals at 22 metric tons/ha appears to assure adequate P availability, while P availability from phosphate fertilizers may be negligible over the same period. The stable nature of manure organic matter, stimulation of microbiological activity and association of P with organic components of the soil may account for the resistance of manure P to processes removing phosphate fertilizer P from available forms.