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Nematodes are microscopic plant parasites belonging to a group of worm-like animals that cause significant damage to crops and are extremely widespread.
Nematodes cause farmers and nursery practitioners millions of dollars in crop loss, thus damaging turf grasses, ornamental and home garden. They also affect crop yield and quality through destruction of plant roots and also prevent plant water and nutrient uptake.
Mr. Benson Ogundu a KEFRI Technologist (Pictured) laid bare these findings through his presentation on Tagetes Minuta and Tephrosia Vogelii in control of Nematodes in Muguga- Malare soil, during a scientific colloquium held on Wednesday 27th November at the Institutes’ Auditorium.
The presentation was to evaluate effects of Tagetes minuta and Tephrosia vogelii for control of nematodes and to come up with the most effective plant crude extracts between Tagetes minuta and Tephrosia vogelii in control of nematodes in Muguga-Malare soils using nematicide.
According to Ogundu both Tagetes minuta (Mexican marigold) and Tephrosia vogelii were found to be effective in controlling plant parasitic nematode adding that many appropriate strategies have been developed for use in nematode control.
‘’Selection of nematode control methods should be guided by; the economics of crop production, target nematode species and potential nematode threats, environmental and food safety regulations. Integrated pest and crop management approaches encompassing as many feasible strategies as possible should be adopted’’. He said. He further cautioned that although chemical usage is economical in production of high value crops, it should be applied judiciously because it is potentially hazardous to the environment. In addition, growers are advised to get information about permitted products before using nematicides on any crops.
The evaluation of the effects recommended thus; since nematode eliminating is not possible, their population should be managed by reducing their numbers below damaging levels that’s by planting resistant crop varieties, rotating crops, soil improvements and soil somatization.