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DEFOLIATION AND MANURING OF PERENNIAL RYEGRASS (S24) FOR SEED PRODUCTION
Author(s) -
Evans Gwilym
Publication year - 1962
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.1365-2494.1962.tb00281.x
Subject(s) - perennial plant , agronomy , yield (engineering) , crop , biology , materials science , metallurgy
Autumn defoliation of the early perennial ryegrass, S24, expedited or delayed heading and increased or decreased the number of heads and seed yield, according to the age of the stand, winter conditions and previous management. Nitrogen applied as late as anthesls significantly increased the seed yield of the first harvest crop, but the after‐effect on the next seed crop was not better than from an application made immediately after the first harvest. One application in spring was more effective than two in the previous summer and autumn. Autumn defoliation influenced seed yield more strongly than the gross weight of the unthreshed crops.