Effect of Attack of Barley Fly, Delia FlavibasisStein (Diptera: Anthomyiidae) on Growth and Yield of Barley, Hordeum Vulgarel

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Macharia, M.
Mueke, J.M.
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Field experiments were carried out to determine the effects of infestation of D. flavibasis on growth and yield of barley. The effects of attack on the malting quality and commercial value of harvested barley crop was also assessed. Attacked plants suffered a checik in their growth and were observed to compensate by recovery growth. The slow rate of development and compensatory growth delayed ripenng. In the attacked barley, the shoots developed unevenly and the ears did not ripen evenly. D. flavibasis intestation caused high yield losses. Highest yield losses occurred in varieties Proctor, Tumaini, K. Research and MPYT 169-2Y. The lowest yield loss occurred in Can B35/2_ However, D. flavibasis attaak: did not affect the grain quality, hence no effect on the malting quality of barley. The pest incidence did not reduce the commercial value of the harvested barley crop.
East African Agricultural and Forestry Journal, 50 (No 1), pp. 48-53