About Us | Help Videos | Contact Us | Subscriptions



This article in SSSAJ

  1. Vol. 22 No. 3, p. 257-259
    Received: Jan 22, 1958
    Accepted: Feb 25, 1958

Request Permissions


Influence of Soil Temperature and Nitrogen on Ryegrass Growth and Chemical Composition1

  1. W. L. Parks and
  2. W. B. Fisher2



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.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © . Soil Science Society of America