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New trap promises pest-free tomatoes and bigger profits
A Senior Lecturer and researcher at Mkwawa University College of Education (MUCE), Dr Juma Mmongoyo, demonstrates the insect trap at the University of Dar es Salaam pavilion during the 49th Dar es Salaam International Trade Fair. PHOTO | GADIOSA LAMTEY
What you need to know:
- The innovation, developed in partnership with the Swedish University of Agricultural Sciences, is undergoing field trials in Iringa
Dar es Salaam. Tomato farmers across the country may soon find relief from the devastating Tuta absoluta pest, commonly known as kantangaze, thanks to a new trap designed to capture the insect without using harmful pesticides.
The pest, which attacks tomatoes at all growth stages, has long plagued farmers by damaging leaves, leaving dark waste deposits, and laying bright white eggs under foliage.
Now, a new invention developed by a Senior Lecturer and researcher at Mkwawa University College of Education (Muce), Dr Juma Mmongoyo, is offering a promising alternative. The trap, which lures the pest with a special chemical, eliminates the need for chemical spraying.
“Our project uses an ‘attract and kill’ method that directly targets the pest. It’s safer, cheaper, and better for the environment,” Dr Mmongoyo said yesterday during the 49th Dar es Salaam International Trade Fair (DITF), commonly known as Sabasaba.
The innovation, developed in partnership with the Swedish University of Agricultural Sciences, is undergoing field trials in Iringa. Early results from the January–July 2025 rainy season show a notable decline in pest numbers. Trials will continue during the dry season to confirm year-round effectiveness.
“For years, farmers have relied on costly pesticides that leave harmful residues and reduce export competitiveness,” said Dr Mmongoyo.
“Our method aims to improve food safety and help Tanzanian tomatoes meet international standards.” He added that the innovation could lower production costs, improve quality, and pave the way for organic tomato farming in Tanzania, potentially boosting earnings in global markets.
“This isn’t just about fighting pests. It’s about empowering farmers to grow safe and high-quality produce,” he said.
The research has sparked public interest at Sabasaba, where one visitor, Mr Jackson Masaini, raised questions about the safety of the chemicals used in the traps, a sign of growing public awareness around sustainable farming
