Browsing Scholarly Journals by Author "Okechukwu, R.U."

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Comparative virulence of bacterial blight (Xanthomonas campestris pv. vignicola) isolates and their effect on yield components of cowpea (Vigna unguiculata)

Shoaga, O.A.; Ekpo, E.J.A.; Okechukwu, R.U. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2001-07-19)

The viruleiace of Ibadass, Ikeirne asid Kano isolates of bacterial blight pathogen and their effect on yield components were compared in cowpea cnltivars Ife Brown, TVx 3236 and 86D-721 artificially inoculated in the ...
Reaction of selected cowpea (Vigna unguiculata L. Walp) bfeedinglihcs to Xanthomonas campestrispv. vignicola

Amusa, N.A.; Okechukwu, R.U. (Faculty of Agriculture, University of Ruhuna, SriLanka, 1998-10-15)

Disease pressure in a cowpea screening field in Kano, a Sudan Savanna region of Nigeria, was increased by early planting of spreader lines of cowpea varieties susceptible to bacterial blight incited by Xanthomonas vignicola. ...
Yield depression in cowpea cnltivars infected with Xanthomonas campestris pv. vignicola in Sudan savanna of Nigeria

Okechukwu, R.U.; Ekpo, E.J.A.; Florini, D.A. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-05-08)

Two field trials were conducted in the Sudan savanna site of IITA Experimental Station, Minjibir, Kano State, Nigeria to assess the effect of bacterial blight on pod, grain and fodder yield of two cowpea varieties artificially ...

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