Pests and diseases of yam and their control methods
Pests of Yam
Yam tuber pests makes holes on tubers, resulting in low tuber marketability.
How to Control the spread of yam pest:
Apply insecticide like BHC at planting to avoid disease spreading around
Dust yam sett with aldrin dust
Practice crop rotation to control disease spread
Spray yam plant with insecticides e.g. BHC
By hand picking
Dust with chemical like Agrocide 3 powder.
How to control rodent pests of yam
Rodents: Rats and rabbits eat up tubers
Control: Set traps to catch the rodents.
How to control Diseases of Yam like yam mosaic disease and yam rot disease
Control of yam diseases
Grow resistant varieties
Spray with insecticides
Causes of Yam rot:
Symptoms: Liquid oozes out from infected tuber. White – brown liquid emits with pungent odour.
Destroy all affected yam
Apply aldrin dust
Practice crop rotation
how to control the spread of yam leaf spot disease
Yam leaf spot:
It is caused by a fungus (Cercospora spp) which is spread by wind.
Symptoms of yam leaf spot:
Symptoms include dead spots on the leaves
Spray yam plants with appropriate fungicides.