Impact of weeding frequency in controlling flea beetles (Podagrica spp.) and yield of three varieties of okra (Abelmoschus esculentus L. Moench) in Gombe State, Nigeria

Abstract

Field studies were carried out at School of Agricultural Technology Teaching and Research Farm of Federal College of Horticulture, Dadin Kowa, Gombe State, Nigeria during 2014 and 2015 cropping seasons to assess the impact of weeding frequencies in controlling flea beetles (Podagrica spp.) using three varieties of Okra. Three varieties of Okra  (NGAE-96-1; NHAE-47-4 and Challawa) and four  weeding frequencies (no weeding, one weeding at 3 WAS, two weedings at 3 and 6 WAS and three weedings at 3, 6 and 9 WAS) were assessed using split plot laid out in randomized complete block design replicated three times. Results showed that the flea beetle (Podagrica spp.) populations, leaves and fruit damaged weight were significantly (P≤0.05) reduced while okra plant height and fruit yield were improved on plots that were weeded three times compared to other weeding frequencies. The result further showed that NGAE-96-1 and NHAE-47-4 reduced flea beetle (Podagrica spp.) populations, leaves and fruit damage than challawa. The results indicated that flea beetle control could be effectively achieved and okra production improved through the manipulation of weeding frequencies and selecting the appropriate okra varieties in the study area