EFFECTIVENESS OF LOCAL BIOPESTICIDES IN THE CONTROL OF DIAMONDBACK MOTH (PLUTELLA XYLOSTELLA L.) IN CABBAGE PRODUCTION IN ZANZIBAR, TANZANIA
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Date
2024
Journal Title
Journal ISSN
Volume Title
Publisher
Acta Agriculturae Slovenica Journal
Abstract
This experiment was conducted to determine the effectiveness of different
types of local biopesticides to control diamondback moth (DBM) in
cabbage production in Zanzibar. The experiment was conducted in
horticulture farms at Zanzibar Agricultural Research Institute. The
experiment was conducted in a randomized complete block design, with 6
treatments and a control, each of which was replicated 3 times. The water
extract of the following plants were used as biopesticide which are garlic
(T1), pepper (T2), clove (T3), mixture of garlic and pepper (T4), mixture
of garlic and clove (T5), synthetic insecticide (T6) and a control (T0). The
parameters were evaluated by conducting initial data collection (before
treatment) and final data collection (after treatment). The average number
of leaves affected by DBM and yield in terms of average weight (kg) of
cabbage at the harvest stage were recorded. Results showed that T6 was
associated with a lowest average number of affected leaves and higher
yield followed by T4 , T1 and T5. Overall, garlic-treated plots had recorded
higher yield compared to the non-garlic treated plots. Therefore, garlic
extract as local biopesticide can effectively repel DBM. This study
recommends that garlic can be used as an alternative to using synthetic
chemicals to control DBM in cabbage crop.
Description
Cabbage, Brassica oleracea, is a green leafy vegetable with very high
nutritional value and it is infested by varieties of insects. This crop is
cultivated mainly by small-scale farmers in Zanzibar.