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THE AFTER‐EFFECTS OF VARYING RATES OF SPRING APPLICATION OF NITROGEN AND OF DATES OF FIRST DEFOLIATION ON THE YIELD AND BOTANICAL COMPOSITION OF A GRASS/CLOVER SWARD
Author(s) -
Heddle R. G.
Publication year - 1966
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1966.tb00482.x
Subject(s) - agronomy , grassland , spring (device) , yield (engineering) , nitrogen , red clover , composition (language) , biology , growing season , chemistry , organic chemistry , metallurgy , engineering , mechanical engineering , linguistics , materials science , philosophy
Mid–season depression of grassland yield following spring application of N was found to be due almost entirely to clover depression, the grass fraction showing no after effects of the treatment. The effect became more marked and lasted longer in successive years. Varying the date of first defoliation in spring did not affect the clover depression significantly. Possible causes contributing to the depressing effect are discussed.