Environmental Entomology (1977) 6, 705-708

K.P. Pruess, K.M.L. Saxena and S. Koinzan (1977)
Quantitative estimation of alfalfa insect populations by removal sweeping
Environmental Entomology 6 (3), 705-708
Abstract: Insect populations were estimated from the reduction in catches in successive sweep samples taken from the same area of alfalfa fields. A model is provided which assumes that the probability of collecting an insect may change with successive samples, as opposed to previous models which assume a constant probability for capture. The technique of removal sweeping provided good population estimates of some insect species, including grasshoppers (Melanoplus spp.). General consideration involved in obtaining optimum estimates are discussed.
(copied with permission from Acridological Abstracts)

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Melanoplus (genus)