False chinch bugs, Nysius raphanus (Hemiptera:Lygaeidae), are economical pests on canola, Brassica napus. It has a wide hosts range, but mainly affects Brassicae family plants. They usually aggregated on the plants and might cause wilt and loss of yield. Trials were conducted to determine the relationship of false chinch bug infestation on yield of canola at two plant growth stages, early flower stages and early pod stages, in 2001 and 2002.Treatments involved individual canola heads covered with polypropylene mesh bags. Different numbers of false chinch bugs were then put into each of the bags. Each of the trials was repeated on different numbers of canola varieties. Trials were conducted in 2001; these results indicated that false chinch bugs caused greater yield loss in early flower stages than early pod stages of canola.
Species 1: Heteroptera Lygaeidae Nysius raphanus (False chinch bugs)
Keywords: Economic threshold, canola
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