Plantwise Factsheets for Farmers
Recognize the problem
adult leaf miner is a small brownish grey moth (butterfly) that lays its eggs
on the underside of groundnut leaves and petioles. The eggs hatch into small yellowish-green caterpillars
(tumbu) with shiny black heads.
The young tumbu
enters the young leaf immediately after it hatches from the egg and starts
feeding. As the caterpillar feeds, small
blisters (mines) are seen on the upper surface near the mid rib. As the feeding
progresses, the mines increase in size and the entire leaflet becomes brown,
rolls, shrivels and dries up, resulting in early shedding of leaves which
affects the growth and yield. In severe
cases the entire plant appears to have been burnt up.
early at the start of the rains between the second week of April and the second
week in May.
varieties like samnut 22 and 23.
groundnut with maize to reduce leaf miner population.
four weeks after planting for first weeding and at least two times later when
weeds are seen.
and crush webbed leaves in which the green larvae hide.
traps could be used to catch the adult moths.
The recommendations in this factsheet are relevant to:
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