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Stickstoffausnutzungsvermögen von Lolium perenne und Lolium multiflorum‐Sorten
Author(s) -
Bugge Gisela
Publication year - 1988
Publication title -
journal of agronomy and crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.095
H-Index - 74
eISSN - 1439-037X
pISSN - 0931-2250
DOI - 10.1111/j.1439-037x.1988.tb00645.x
Subject(s) - lolium multiflorum , lolium perenne , agronomy , human fertilization , lolium , dry matter , nitrogen fertilizer , nitrogen , yield (engineering) , biology , poaceae , chemistry , fertilizer , materials science , organic chemistry , metallurgy
Selection for improved nitrogen‐utilization in Lolium In a 3‐year study the responses of 14 Lolium perenne‐varieties and 14 of Lolium multiflorum to different nitrogen fertilization (75, 150, 300 kg N/ha) were investigated. The varieties were classificated into four types of nitrogen utilization. “Low input varieties” can be found in type III. The varieties of this type produced always the highest yield at all levels of nitrogen fertilization. The yield of type I was always smaller than the average of all varieties. The varieties of type II gave significant better responses than the trial average up to 150 kg N/ha. Under low and high N‐fertilization the type III can be separate of type I and II because it is always the outstanding variety. The dry matter production of the roots did not show varieties differences under the increasing N‐fertilization. The soil nitrate contents were with 20 kg nitrate nitrogen per ha very small.