Cookies on CABI

Like most websites we use cookies. This is to ensure that we give you the best experience possible.


Continuing to use  means you agree to our use of cookies. If you would like to, you can learn more about the cookies we use.

Search this site
Sign up for the CABI e-zine Newsletter
Improving lives by solving problems in agriculture and the environment

Helping farmers fight tomato pests, earn better incomes and build brighter futures

Geoffrey Omollo is a smallholder farmer in Nyaraha village, western Kenya. He has been growing kale and tomatoes on his farm for the last six years to make money to support his family and educate his children. Crop pests, and a lack of know-how about how to tackle them, mean he struggles to get good harvests.

Most of the world’s food is grown by smallholders like Geoffrey. Perhaps surprisingly, small-scale farmers in developing countries tend to be those most badly affected by food insecurity.

They grow crops not only to eat, but also to sell. With their incomes, they buy the food they cannot grow. When crops fail, both their own food production and income are affected.

In Nyaraha, Geoffrey put aside most of his farm to grow tomatoes. Several years ago, a tomato pest (Tuta absoluta) ravaged Africa, decimating crops. It reached Kenya and affected most tomato farms in Geoffrey’s area. His livelihood was under threat.

At the time, other smallholder tomato farmers in Kenya, like Elias Kamuga, were reporting massive crop losses.

“I have suffered [crop] losses amounting to 90%. I have no other source of income apart from tomato farming. I was relying on this crop to feed my family.”
Elias Kamuga, Farmer, Kenya

That same year, Geoffrey’s two children were taking their final school exams; their continued education would cost money. With the tomato pest looming, times looked tough.

But Geoffrey had heard about the Plantwise plant clinics and his life was about to change. In 2016, he sought the advice of local plant doctors and, with the pest management recommendations they gave, not only saved his tomatoes but also, for the first time in his life, harvested a bumper crop of 65 crates of tomatoes, selling them for KSh 325,000 (US$3,500).

With this income, he took care of his household and farm and also built a new house – his old house was collapsing – paid for one child to go to secondary school and the other to go to university, including fees and shopping. Standing in front of his new house in 2017, Geoffrey now preaches the benefits of plant clinics to neighbours saying plant doctors ‘oyawo wang’a’, meaning plant doctors have opened his eyes. He now believes good farming can change lives.


UK Department for International Development (DFID)

The Swiss Agency for Development and Cooperation (SDC)

The European Commission Directorate-General for International Cooperation and Development (DG DEVCO)

The Directorate General for International Cooperation (DGIS, Netherlands)

Irish Aid

The International Fund for Agricultural Development (IFAD)

The Australian Centre for International Agricultural Research (ACIAR)

The Ministry of Agriculture and Rural Affairs of the People’s Republic of China