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The Influence of Phosphorus Fertilization and Moisture on Growth and Nutrient Absorption by Spring Wheat: II. Soil and Fertilizer P Uptake in Plants
Author(s) -
Power J. F.,
Reichman G. A.,
Grunes D. L.
Publication year - 1961
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/sssaj1961.03615995002500030021x
Subject(s) - fertilizer , agronomy , growing season , human fertilization , moisture , precipitation , nutrient , environmental science , phosphorus , seeding , water content , field experiment , zoology , chemistry , biology , geology , geography , geotechnical engineering , organic chemistry , meteorology
The availability and uptake of soil and fertilizer P was studied with dryland spring wheat under four moisture regimes in a field experiment in eastern Montana. The Chestnut soil used was moderately low in available P (6.2 ppm. NaHCO 3 ‐soluble P per acre). Fertilization with P, higher soil moisture supplies at seeding time, and additional precipitation during the growing season, all increased total P uptake by spring wheat at all stages of plant growth. Interactions between any of these three factors seldom affected total P uptake at any stage of growth. Increasing the supply of soil moisture at seeding or growing‐season precipitation increased plant uptake of soil P. However, P fertilization reduced soil P uptake. Moisture supplies at seeding and growing‐season precipitation did not affect uptake of fertilizer P, except at the tillering stage of growth. The percent of total P in plant material derived from fertilizer was generally lowest in treatments receiving the most moisture, either as stored soil moisture or growing‐season precipitation. NaHCO 3 ‐extractable P was not influenced appreciably by moisture conditions.