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J. M. Schalk

United States Department of Agriculture

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Publication

Featured researches published by J. M. Schalk.

Hortscience | 1991

Resistance in Pepper (Capsicum annuum L.) to Western Flower Thrips (Frankliniella occidentalis (Pergande))

Richard L. Fery; J. M. Schalk

Journal of Economic Entomology | 1979

Tomato Production in Maryland: Effect of Different Densities of Larvae and Adults of the Colorado Potato Beetle

J. M. Schalk; Adair Stoner

Journal of Economic Entomology | 1980

Field Selection of Sweet Potato Lines and Cultivars for Resistance to the Sweetpotato Weevil

M. A. Mullew; Alfred Jones; R. T. Arbogast; J. M. Schalk; D. R. Paterson; T. E. Boswell; D. R. Earhart

Hortscience | 1985

Regal sweet potato

Alfred Jones; Philip D. Dukes; J. M. Schalk; M. G. Hamilton; M. A. Mullen; R. A. Baumgardner; D. R. Paterson; T. E. Boswell

Journal of Economic Entomology | 1969

Temperature and the Preference of the Spotted Alfalfa Aphid for Resistant and Susceptible Alfalfa Plants

J. M. Schalk; S. D. Kindler; G. R. Manglitz

Journal of Economic Entomology | 1985

Semiquantitative Bioassay for Levels of Cucurbitacins Using the Banded Cucumber Beetle (Coleoptera: Chrysomelidae)

J. K. Peterson; J. M. Schalk

Hortscience | 1983

'Resisto' sweet potato.

Alfred Jones; Philip D. Dukes; J. M. Schalk; M. G. Hamilton; M. A. Mullen; R. A. Baumgardner; D. R. Paterson; T. E. Boswell

Journal of Economic Entomology | 1982

Southern Green Stink Bug and Leaffooted Bug: Effect on Cowpea Production

J. M. Schalk; Richard L. Fery

Hortscience | 1992

Responses of soil insects to mixed and contiguous plantings of resistant and susceptible sweetpotato cultivars.

J. M. Schalk; Alfred Jones; Philip D. Dukes; Kenneth P. Burnham

Hortscience | 1991

1/13 and J/8 Sweetpotato Mass Selection Populations

Alfred Jones; Philip D. Dukes; J. M. Schalk; Max G. Hamilton

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Alfred Jones

United States Department of Agriculture

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Philip D. Dukes

United States Department of Agriculture

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G. R. Manglitz

United States Department of Agriculture

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S. D. Kindler

United States Department of Agriculture

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Janice R. Bohac

United States Department of Agriculture

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Richard L. Fery

United States Department of Agriculture

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Adair Stoner

United States Department of Agriculture

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G. Rassoulian

United States Department of Agriculture

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H. J. Stevens

United States Department of Agriculture

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Howard F. Harrison

United States Department of Agriculture

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