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Evaluation of Irrigation Methods, Potato Cultivars and Vermicompost for Integrated Management of the Meloidogyne incognita and Ralstonia solanacearum Disease Complex

Evaluation of Irrigation Methods, Potato Cultivars and Vermicompost for Integrated Management of the Meloidogyne incognita and Ralstonia solanacearum Disease Complex

Tasew Getu1*, Wassu Mohammed2, Awol Seid3, Tesfamariam Mekete4 and Bekele Kassa

1Department of Biology, Dire Dawa University, PO. Box 13 62 Dire Dawa, Ethiopia; 2School of Plant Sciences, College of Agriculture and Environmental Sciences, Haramaya University, PO. Box, 138 Dire Dawa, Ethiopia; 3Department of Plant Sciences, Wollo University, PO. Box 1145 Dessie, Ethiopia; 4United States Agriculture, Animal and Plant Health Inspection Service, Plant Protection and Quarantine, National Identification Service, 4700 River Road, Riverdale, MD, 20737, Maryland, US; 5Ethiopian Institute of Agricultural Research, Holetta Agricultural Research Center, Ethiopia. PO. Box 2003 Addis Ababa, Ethiopia.

 
*Correspondence | Tasew Getu, Department of Biology, Dire Dawa University, PO. Box 13 62 Dire Dawa, Ethiopia; Email: tasewpatho@gmail.com

ABSTRACT

The Meloidogyne incognita (MI) and Ralstonia solanacearum (RS) disease complex is considered among the most important potato yield-limiting factors. This research was conducted to evaluate the effect of irrigation methods, cultivars, vermicompost (VC) and their interactions for management of the MI and RS disease complex under field conditions. The experiment was laid out in a split-split plot design with three replications. The findings indicated that the treatments and their interactions significantly (P ≤ 0.05) affected the development of MI, RS, and impacted potato yield. The cultivar Gudenie had the lowest mean value (2.2) of MI reproduction factor with drip irrigation amended with VC. Belete registered the lowest mean values of galls (6.6) and eggmasses (7.0) per root system and tuber, and RS final colonies (2.6 × 105) with same treatment. The presence of VC greatly increased tuber yield, and Guassa and Bubu produced the highest marketable tuber yield of 47 and 48 t/ha, respectively under this treatment. All cultivars that were grown with drip irrigation amended with VC fell into the resistant category towards MI and RS disease complex. The study revealed that the tested treatments respond differently to the disease complex, and potato yield parameters. Therefore, the integration of drip irrigation, VC and selected cultivars could be used for sustainable management of MI and RS infections in potato production during the dry season.

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Pakistan Journal of Nematology

June

Pakistan Journal of Nematology, Vol. 42, Iss. 1, Pages 1-87

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