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Mosquito nets for cabbages

Research now underway at the Kenya Agricultural Research Institute (Kari) shows that a modified form of the mosquito net can used to protect cabbage plants from aphids and caterpillars

Research, Kenya Agricultural Research Institute, (Kari), mosquito, net, cabbage, plants, aphids, caterpillarsResearch now underway at the Kenya Agricultural Research Institute (Kari) shows that a modified form of the mosquito net can used to protect cabbage plants from aphids and caterpillars

 

Dr Lusike Wasilwa, an assistant director in charge of horticulture and industrial crops at Kari, says the initiative could be the most effective method of pest control on cabbages and tomatoes.

“For a long time, farmers have assumed that the only effective way of pest control is to increase the dose of a pesticide or to increase the frequency of spraying crops, but now comes an easier way of pest control,” Dr Wasilwa said.

“Covering plants between 5pm and 9am for three days is the most effective way to get healthy crops,” she told the Nation at Kari.

The net is removed during the day when the flight activities of pests are reduced and to suppress the problems of overheating and excessive shade; both problems are experienced with insect-proof screens under tropical conditions.

Hazardous

Ms Judith Jeptoo, a Masters student at Chepkoilel University Campus, who is also carrying out the study at the Kari field, warns that some of the pesticides used for pest control are often hazardous affecting users and the environment.

Cabbages are one of the most important cash crops in Africa, but attract a wide range of pests leading to loss of yield.

The research on reducing pests and improving micro-climate for small-scale vegetable production in Africa hopes to demonstrate that simple technology can be used to protect high-value crops.

The technology has also been tested in Benin by Cirad, a French team, where farmers were cynical at first but later realised better harvests.

The Benin study revealed that cabbage harvests were higher for those that had been covered.

The technology was developed through the partnership of World Health Organisation, A to Z Textile Mills and Sumomoto of Japan in an initiative dubbed Vector Health International.


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