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Publication Date
1981
Description
Results from 21 field experiments are examined to discover the effects oflevel of applied nitrogen (N) on the regrowth of grass over 8 weeks following a cutting and the situation after about 6 weeks' regrowth, at different times of year. Percentages of N and nitrate Nin herbage generally increased in the early stages of regrowth and then declined. The better the growing conditions were, the faster was the decline. The positive effect of applied Non relative growth rate tended to be greatest and most short-lived when growing conditions were most favorable. Response to applied N increased as growing conditions improved in the spring with respect to yield, number of tillers, and leaf size and declined as growing conditions deteriorated in the autumn, except in respect to number of tillen. Area/green leaf blade tended to be greatest in September, and response to N was large at this time. Response to the final increment of N vras very low after September, as measured by area/blade and yield of blade.
Citation
Wilman, D and Wright, P T., "Some Effects of Applied Nitrogen on Grass Growth in Field Swards at Different Times of Year" (1981). IGC Proceedings (1981-2023). 7.
(URL: https://uknowledge.uky.edu/igc/1981/section3/7)
Included in
Agricultural Science Commons, Agronomy and Crop Sciences Commons, Plant Biology Commons, Plant Pathology Commons, Soil Science Commons, Weed Science Commons
Some Effects of Applied Nitrogen on Grass Growth in Field Swards at Different Times of Year
Results from 21 field experiments are examined to discover the effects oflevel of applied nitrogen (N) on the regrowth of grass over 8 weeks following a cutting and the situation after about 6 weeks' regrowth, at different times of year. Percentages of N and nitrate Nin herbage generally increased in the early stages of regrowth and then declined. The better the growing conditions were, the faster was the decline. The positive effect of applied Non relative growth rate tended to be greatest and most short-lived when growing conditions were most favorable. Response to applied N increased as growing conditions improved in the spring with respect to yield, number of tillers, and leaf size and declined as growing conditions deteriorated in the autumn, except in respect to number of tillen. Area/green leaf blade tended to be greatest in September, and response to N was large at this time. Response to the final increment of N vras very low after September, as measured by area/blade and yield of blade.
