Research Papers: Survey of the Nematicidal Properties of Some Organic Materials Available in Alabama as Amendments to Soil for Control of Meloidogyne arenaria

Authors

  • I. H. Mian
  • R. Rodriguez-Kabana

Keywords:

Biological Control, Waste Management, Root-Knot Nematodes, Cultural Practices, Organic Manures

Abstract

The nematicidal properties of 15 materials of plant origin was studied in greenhouse experiments with a soil infested with Meloidogyne arenaria (Neal) Chitwood. Amendments to soil with spent coffee (Coffea arabica L.) grinds, or with crotalaria (Crotalaria spectabilis Roth), kudzu [Pueraria lobata (Willd.) Ohwi], or ramie [Boehmeria nivea (L.) Gaud] hays applied at 1% (w/w) were the most effective to reduce root galling caused by the nematode on summer crookneck squash (Cucurbita pepo L.). The nematicidal efficacy of all the amendments in the study was directly correlated with their nitrogen content and inversely related to their C/N ratios. Amendments with materials having C/N rations in the range of 15-20 were the most efficacious against the nematode when all the amendments were applied at 1.0%; application of materials with narrower C/N ratios resulted in severe phytotoxicity.

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Published

1982-12-01

Issue

Section

Articles