Soil Temperature Effects on Onion Seedling Injury by Pratylenchus penetrans

  • J. M. Ferris

Abstract

The effect of soil temperatures 7-25 C upon injury to seedling onions by Pratylenchus penetrans was investigated. At 7-13 C 100 nematodes/g of root caused significant reduction in onion root weights by the fifth week. More than 400 nematodes/g were required to produce comparable injury at 16-25 C. Key Words: Pratylenchus penetrans, Pathogenicity, Onion seedlings, Soil Temperature.
Published
1970-07-15
Section
Articles