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Factors Influencing the Population Fluctuation of Pratylenchus penetrans 1 in Soils of High Organic Content. I. Effect of Soil Fumigants and Different Crop Plants2

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Seven selected fields situated near Newland, Indiana, were sampled at monthly intervals during 4 growing seasons to determine the population levels of Pratylenchus penetmns (Cobb) Filipjev and Stekhoven. During the course of the study several of the fields in which sampling sites were situated were treated at various times with I or more of the following nematicidal chemicals: D-D®(l,3-dichloropropene and 1,2-dichloropropane mixture) , Telone® (dichloropropenes mixture), or Vorlex® (mixture of dichloropropenes, dichloropropanes and related chlorinated C3 hydrocarbons plus methyl isothiocyanate). During the first and second growing seasons following fumigation, the P. penetrans population tended to remain low irrespective of crop grown. In the absence of this "fumigation effect" the nematode developed high populations on all crops grown in the rotations, which included onion, corn, potato, spearmint, and peppermint. In a greenhouse test potato, peppermint, onion, and corn were grown in soil naturally infested with P. penetrans at 2 different levels of infestation. In this test the smallest buildup of the nematode occurred on onion.

Document Type: Research Article

Publication date: December 1, 1967

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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