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Competitive Efficiency and Productivity of Bluegrass (Poa Pratensis L.) with Partial Defoliations at Two Levels of Cutting 1
Author(s) -
Graber L. F.
Publication year - 1933
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1933.00021962002500050003x
Subject(s) - poa pratensis , productivity , agronomy , biology , economics , poaceae , macroeconomics
That the frequency and extent of defoliations of forage plants is of much agronomic significance has been made evident by many workers in recent years. This paper will report the results obtained from cutting a pure stand of weed-free bluegrass at two different levels or heights of cutting in 1929 and the effect of such defoliations on the productivity and the ingress of weeds in such bluegrass in 1930 and 1931. '_ . Bluegrass seed was sown on a fairly fertile Miami silt loam soil on the University Farm at Madison, Wisconsin, at the rate of 100 pounds per acre on July 13, 1928. The soil was practically weed-free, having been fallowed during the season of 1927 and prior to seeding in 1928. Five days after seeding the plats were rolled twice with a 2-ton road roller which smoothed, levelled, and very firmly compacted the soil. All these treatments, along with favorable weather, resulted in a good uniform stand of bluegrass in the fall of 1928. No cuttings were made that season.