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International Journal of Sustainable Agricultural Research

December 2020, Volume 7, 4, pp 244-254

A Survey of Farmers Knowledge and Practice on the Management of Watermelon Diseases in Horticultural Belt of Mt. Kenya Slopes

Salome W. Kiarie


Susan S. Imbahale


Sheila Okoth


Mary Gikungu

Salome W. Kiarie 1 ,

Susan S. Imbahale 1 Sheila Okoth 3
Mary Gikungu 4

  1. School of Biological and Life Sciences, Technical University of Kenya, Nairobi, Kenya. 1

  2. School of Biological Sciences, University of Nairobi, Nairobi, Kenya. 3

  3. The National Museums of Kenya, Nairobi, Kenya. 4

Pages: 244-254

DOI: 10.18488/journal.70.2020.74.244.254

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Article History:

Received: 05 August, 2020
Revised: 16 September, 2020
Accepted: 28 September, 2020
Published: 07 October, 2020


Horticulture is the largest sub-sector of agriculture, in Kenya, contributing 33% of the Agricultural GDP. Watermelon is the sixth among eight listed fruits which are economically important horticultural produce in Kenya. The fruit is grown mostly in dry areas of Kenya, however due to high demand, large acreage of land on the slopes of Mt. Kenya are now being cultivated with this crop. A study was carried out in July 2018 to examine watermelon farmers’ knowledge and practice in the management of watermelon diseases on the slopes of Mt. Kenya. A semi-structured questionnaire was administered to 80 watermelon farmer’s selected using Snowball technique from Karurumo, Gachoka, Kiritiri and Ishiara locations. The survey revealed that majority of farmers grew watermelon on 1-2 acres. Watermelon diseases were reported to attack the plant at all stages of growth. Among the diseases, blight was reported by most respondents at 63.8%, followed by fusarium wilt (41.3%) and powdery mildew (38.8%). Farmers experience of various diseases was not significantly different in the four locations except for Fusarium wilt (p=0.046) and powdery mildew (p=0.020). Cold weather was reported by 60% of respondents as most conducive condition for disease occurrence, followed by rainy conditions (17.5%). Most farmers in all the locations applied pesticides (97.6%) as the major method of disease control, with a few (27.5%) practicing crop rotation. This was attributed to agronomic support by extension workers in the area. The slopes of Mt. Kenya, have potential of increased production only if farmers receive support in disease management.
Contribution/ Originality
This study is one of the very few studies which have investigated and documented the challenges faced by watermelon farmers in managing watermelon diseases, if support is provided in disease and pest management, production will increase and farmer livelihood improved in Mt. Kenya region.


Watermelon, Mt. Kenya Region, watermelon diseases, Disease management, Farmer knowledge, Agronomic support.


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This work was carried out under National Museums of Kenya following financial support from National Research Fund (NRF).

Competing Interests:

The authors declare that they have no competing interests.


All authors contributed equally to the conception and design of the study.

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