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Resistance of Red Clover to the Clover Leaf Weevill 1
Author(s) -
Gorz H. J.,
Manglitz G. R.,
Haskins F. A.
Publication year - 1975
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1975.0011183x001500020043x
Subject(s) - biology , weevil , hypera postica , red clover , forage , infestation , larva , agronomy , resistance (ecology) , pest analysis , horticulture , botany
Red clover ( Trifolium pratense L.) varieties in the third season of growth, that had been exposed to a heavy infestation of larvae of the clover leaf weevil [ Hypera punctata (Fabricius)], differed significantly in percentage defoliation, feeding injury score, plant height, and forage production. Based on these four characters, ‘Mammoth,’ ‘Lakeland,’ ‘Dollard,’ and ‘LaSalle’ were highly resistant to larval feeding; ‘Kenland,’ ‘Common,’ and ‘Pennscott’ were highly susceptible. Long term second‐season yield tests including six of these varieties indicated no consistent superiority of any of the varieties in the absence of weevil feeding.