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Use of growth retardants on chrysanthemums: Effect on pest populations
Author(s) -
Worthing C. R.
Publication year - 1969
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740200704
Subject(s) - myzus persicae , chlormequat , tetranychus urticae , aphid , pest analysis , cultivar , biology , horticulture , spider mite , pest control , toxicology , botany , agronomy , plant growth
Numbers of the aphid, Myzus persicae , and the spider mite, Tetranychus urticae , were compared on two chrysanthemum cultivars treated with commercial rates of B995, chlormequat chloride and chlorphonium chloride. The growth retardants did not give effective pest control on this host, but in some trials the populations were significantly lower where chlormequat chloride and chlorphonium chloride was used. They appear to act indirectly and reduced the survival rate of nymphal M. persicae .