KARI-NRI-Third Quarterly Report Feb-April 1991

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Date
1991
Authors
Kenya Agricultural Research Institute
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Kenya Agricultural Research Institute
Abstract
Sampling of maize cobs for LGH infestation continued in the four fields at the Kiboko Station until the beginning of March. During ten sampling occasions in which 3044 cobs were examined, only four cobs were found to contain single adult LGBs. As can be seen in Annex II the earliest records .were made about 12 weeks after planting (about five weeks after 50% anthesis) when the grain moisture content (m.c.) was 39 - 45%. In the last sample, 17 weeks after planting when the m.c. was about 12% and which was taken from plants left in the field for a week after main harvest, a cob was found with Prostephanus larvae and which yielded Fl adults after incubation.
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