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Estimation of egg populations of the clover root curculio, Sitona hispidula (Coleoptera: Curculionidae), in Kentucky alfalfa and red clover fields



Estimation of egg populations of the clover root curculio, Sitona hispidula (Coleoptera: Curculionidae), in Kentucky alfalfa and red clover fields



Canadian Entomologist 109(9): 1257-1263



Sampling techniques for estimating egg populations of Sitona hispidulus (F.) that were developed in lucerne and red clover (Trifolium pratense) fields in Kentucky in 1974 are described. An appropriate sampling unit was a 3 X 3 in. area of plants and the soil beneath it to a depth of 4-5 in. This was processed by a flotation technique. The spatial distribution of the eggs was clumped in both fields. The variation of 88-93% in the log variances was accounted for by the variation in log means.

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Accession: 000369014

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DOI: 10.4039/ent1091257-9


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