Environmental Entomology (1984) 13, 588-592

David R. Alverson, Marvin K. Harris, Calvin E. Blanchard and William G. Hanlin (1984)
Mechanical impedence of adult pecan weevil (Coleoptera: Curculionidae) emergence related to soil moisture and penetration resistance
Environmental Entomology 13 (2), 588-592
Abstract: Emergence of adult pecan weevils from orchard soils in Texas and South Carolina was delayed and reduced at low soil moistures. Regression models relating soil moisture and penetration resistance readings (kg/cm²) at 10- to 13-cm soil depths showed that impeded emergence was related to the resistance of dry soils to penetration by adult weevils (R² = 0.99). Adult emergence at various levels of penetration resistance induced by water treatment was strikingly similar for both locations.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Marvin K. Harris

Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
population dynamics/ epidemiology

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Curculio caryae		U.S.A. (mid S)
	Curculio caryae		U.S.A. (SE)