Publication: Botanical insecticides on the management of Cowpea stink bug (Leptocorisa spp. l.).
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Date
2022-05
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Don Mariano Marcos Memorial State University-North La Union Campus
Abstract
Chemical insecticides are very costly and harmful to the environment; hence
botanical insecticides could be a source of more environmental-friendly insecticides. The
effectiveness of botanical insecticides as alternative to chemical insecticides was tested
against Leptocorisa spp. on cowpea. The study area was laid out in Randomized
Complete Block Design having 7 treatments with 3 blocks. The different treatments were:
Untreated, Chemical insecticide, Kakawate Leaf extract, Neem leaf extract, Citronella
leaf extract, Lantana leaf extract, Hot chili fruit extract. The significant result of study
revealed that at fruiting stage 53 DAP and 60 DAP neem, kakawate, lantana, and hot
chili with the mean of 1.46 were comparably effective to chemical insecticide in reducing
stinkbug population count at fruiting stage. In terms of the degree of damage, neem with
the mean of 44.45, lantana with the mean of 40.00, and hot chili with the mean of 46.46
resulted to comparable pod infestation. Citronella spray got the highest weight of
marketable pods with 0.51 kg/plot while chemical insecticide spray obtained the highest
total cost of production with Ᵽ 257.01/plot.
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Citation
Labatete, R. V. S. (20220. Botanical insecticides on the management of Cowpea stink bug (Leptocorisa spp. l.). [Unpublished thesis, Don Mariano Marcos Memorial State-North La Union Campus, SApilang Bacnotan, La Union]. Lakasa ti Sirib, DMMMSU Institutional Repository.