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Influence of Soil Temperature and Nitrogen on Ryegrass Growth and Chemical Composition
Author(s) -
Parks W. L.,
Fisher W. B.
Publication year - 1958
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/sssaj1958.03615995002200030020x
Subject(s) - nitrogen , agronomy , phosphorus , human fertilization , potassium , forage , chemistry , calcium , composition (language) , magnesium , zoology , darkness , botany , biology , organic chemistry , linguistics , philosophy
Annual ryegrass was grown under controlled conditions at different rates of nitrogen fertilization. Alternating periods of 16 hours of light and 8 hours of darkness were maintained in growth chambers set at 10°, 20°, and 30°C. The ryegrass responded to nitrogen fertilization up to the rate of 100 pounds per acre and the response was greatest at the 20°C. temperature. Nitrogen was more efficiently utilized by the ryegrass at the 20° and 30°C. temperature than at the 10°C. temperature. The uptake of potassium, calcium, magnesium, and phosphorus was retarded at the 10°C. temperature. Phosphorus uptake and yield of forage were directly related and the calcium content of the ryegrass increased as the temperature and rate of nitrogen increased.