Modification of the Shake Cloth Sampling Technique for Soybean Insect Research

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A modification of the traditional shake cloth technique was devised to alleviate Some of the problems commonly encountered with its use in soybean insect research. The modification allows for the capture and containment of each arthropod sample in the field. The capture is rapid and observations of the number of active and alate species are therefore increased. Error incurred in the counts and identification of species in the field is reduced because contained samples may be returned to the laboratory for analysis. The modification makes use of inexpensive and easily constructed equipment. Many samples can be captured and contained in a work day. Use of the modified technique yielded higher mean observations in 76 of the 90 class (taxa and stages of development) comparisons than did the traditional technique. In most of the cases where means were different, the variances were not different. The modified technique yielded smaller coefficients of variation in 15 of the 22 cases where the variance among techniques differed significantly.

Document Type: Research Article

Publication date: June 1, 1983

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