Abstract
The methods most commonly used to sample above-ground populations of arthropods in row crops have also been extensively employed in soybean entomology research and surveys. Four of the principal methods are (1) direct observations, (2) ground or beat cloth, (3) sweep net, and (4) vacuum or suction net (usually a D-Vac). Two of these methods, the direct observations and the ground cloth, may approach absolute or direct population estimates for some species. The other two are indirect or relative sampling methods. In general, however, these four methods need proper calibration against reliable absolute sampling techniques that permit conversion of population samples to estimates of density. Two other methods, the absolute sampling techniques most commonly used for soybean arthropods, involve the caging and harvesting of whole plants and the fumigation cage. These methods are based on the exhaustive extraction of individuals from a unit of habitat.
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Kogan, M., Pitre, H.N. (1980). General Sampling Methods for Above-Ground Populations of Soybean Arthropods. In: Kogan, M., Herzog, D.C. (eds) Sampling Methods in Soybean Entomology. Springer Series in Experimental Entomology. Springer, New York, NY. https://doi.org/10.1007/978-1-4612-9998-1_2
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DOI: https://doi.org/10.1007/978-1-4612-9998-1_2
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