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AK Chirchir
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AK Chirchir
JW Kimenju
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GM Kariuki
CO Omondi

International Journal of Agricultural Policy and Research
ISSN 2350-1561
Vol.3 (5), pp. 213-221,May 2015
Available online at https://www.journalissues.org/IJAPR/
DOI:http://dx.doi.org/10.15739/IJAPR.042
Article 15/ID/JPR027/09/ pages
Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.



Original Research Article

Evaluating the potential of incorporating sugarcane host-plant resistance into integrated nematode management strategies

Chirchir Alexander Kipkorir1,2,*, John W. Kimenju2, Emmanuel S. Ariga2, George M. Kariuki3 and Chrispine O. Omondi4

1Kenya Agricultural and Livestock Research Organization – Sugar Research Institute, P.O. Box 44-40100, Kisumu Kenya.
2Department of Plant Science and Crop Protection, University of Nairobi, P.O. Box 29053-00625, Nairobi, Kenya.
3Kenyatta University, Department of Agric Science and Technology, P.O. Box 43844-00100 Nairobi, Kenya.
4Kenya Agricultural and Livestock Research Organization- Coffee Research Institute, P.O. Box 4-00232, Ruiru, Kenya.

*Corresponding Author E-mail: alkchirchir(at)yahoo.com
Tel.: +254 722 206921



date Received:     date Accepted: April 20, 2015     date Published:


 Abstract

Certain sugarcane cultivars have been shown to exhibit resistance against some parasitic nematode species. A field study was conducted to assess potential of integrating this property into nematode control packages to enhance sugarcane productivity. Three sugarcane cultivars were evaluated in a split-plot design under three rates of nematicide aldicarb and replicated thrice. Significant differences (P ≤ 0.05; P ≤ 0.01) were observed in girth, plant height, millable stalks number and yield among the different cultivars and nematicide rates. KEN83-737, N14 and Co 421 reduced nematode populations in treated plots by 67, 49 and 32% while supporting nematode population growth in untreated plots by 24, 33 and 92% respectively at 9 months after planting. Reduction in nematode numbers resulted in a mean increase in yield, girth, plant height, millable stalks number and pol % cane by 34, 18, 37, 53 and 6% respectively. This reduction was highest for resistant and lowest for susceptible cultivars, hence indicating the reduction was partly due to host-plant resistance status of the cultivars. This study established that use of resistant/ tolerant cultivars with aldicarb has an additive effect in reducing nematode numbers resulting in improvement of yield and quality of sugarcane.


Key words: Host-plant resistance status, nematodes, sugarcane cultivars, sugarcane productivity.


Chirchir et al