Reaction of Grafted Cashew Genotypes to Powdery Mildew Disease in the Western Province of Zambia

L. Chisengele, A. Uaciquete and P. W. Kachapulula
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L. Chisengele: Department of Plant Science, School of Agricultural Sciences, University of Zambia, Lusaka.
A. Uaciquete: Instituto de Amêndoas de Moçambique, Serviços de Investigação. Maputo.
P. W. Kachapulula: Department of Plant Science, School of Agricultural Sciences, University of Zambia, Lusaka.

International Journal of Research and Scientific Innovation, 2024, vol. 11, issue 7, 970-975

Abstract: Cashew powdery mildew disease (CPMD), caused by the fungus Pseudoidium anarcadii, has become an economically significant disease of cashew trees in the Western Province of Zambia and many tropical parts of the world. The disease causes significant yield losses of 70 to 100 %. The most effective, sustainable, and environmentally friendly approach to the management of CPMD elsewhere has been through the use of resistant genotypes. Nevertheless, in Zambia, information on the reaction of existing cashew genotypes to CPMD still needs to be discovered. Therefore, this study aimed to evaluate the reaction of cashew genotypes to CPMD in Western Zambia. 90-day-old seedlings from seven cashew genotypes from the ZARI collections were planted and artificially inoculated with cashew powdery mildew spore suspension in a completely randomized design with 15 plant replicates. The experiment was conducted in a screenhouse at Simulumbe Agricultural research station in the Mongu district of Zambia from 20th June to 30th July 2020. Disease incidence and severity were evaluated weekly. Results indicated high variability in the response of the genotypes to powdery mildew disease (P

Date: 2024
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