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Effect of Manure and Irrigation on Sodium Bicarbonate‐Extractable Phosphorus
Author(s) -
Pratt P. F.,
Laag A. E.
Publication year - 1981
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/sssaj1981.03615995004500050013x
Subject(s) - loam , irrigation , manure , phosphorus , sodium bicarbonate , agronomy , mollisol , chemistry , zoology , environmental science , soil water , soil science , biology , organic chemistry
Data for the NaHCO 3 ‐extracted P in soil samples taken at the end of a 4‐year field experiment on a Hanford sandy loam (Typic Xeror‐thent) are presented. The main variables consisted of six rates of manure combined with two rates of irrigation water. The extractable P in the 0‐ to 0.3‐m depth increased for all manure rates. At the 0.3‐ to 0.6‐m and 0.6‐ to 0.9‐m depths, increases were found for only the highest rates. At the 0.9‐ to 1.2‐m depth there was a statistically significant increase only with the highest rate for the low irrigation treatment. The extractable P was consistently lower in the 0‐ to 0.3‐m depth for the high irrigation. At the lower depths there was a suggestion of higher extractable P with the high irrigation, but this effect was not consistent. The P in a fresh liquid manure appeared to move more readily into lower soil depths than a solid corral weathered material.