Yield losses in cowpea by leaf smut caused by Protomycopsis Phaseoli in Nigeria

  • TO Adejumo Department of Microbiology, Adekunle Ajasin University, P.M.B. 01, Akungba-Akoko, Ondo State, Nigeria.
  • T Ikotun Department of Crop Protection and Environmental Biology, University of Ibadan, Ibadan, Nigeria
  • DA Florini 1603 Slaterville Road, Ithaca, NY 14850-6337.
Keywords: Yield loss, cowpea, Vigna unguiculata, leaf smut

Abstract

Yield losses from leaf smut was determined in 10 cowpea cultivars planted as subplots in a split-plot experiment in Mokwa and Ibadan in Nigeria. Different levels of the disease were maintained in the main plot by spraying with a fungicide. There were highly significant differences in disease levels, yield between the resistant, moderately susceptible and susceptible cultivars and between the sprayed and unsprayed plots. Highly significant yield losses of 23-43% occurred in the susceptible cultivars and 30-36% in the moderately susceptible cultivars.

Key Words: Yield loss; cowpea; Vigna unguiculata; leaf smut

Moor J. Agric. Res. Vol.4(1) 2003: 123-130
Published
2004-11-22
Section
Articles

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eISSN: 1595-4153