Assessing the efficacy of choradelta in controlling diamondback moth and aphids on cabbage in Uganda

Abstract

Diamondback moths and aphids are the most destructive pests of cabbage, causing significant damage throughout the crop’s growth cycle. Diamondback moth infestations can result in yield losses of up to 90% worldwide, with global management costs estimated at USD 4–5 billion annually. Severe aphid infestations can reduce yields by as much as 80%, making both pests a major constraint to cabbage production that requires fast action to manage. Therefore, this study aimed to evaluate the efficacy of Choradelta against diamondback moth and aphids in Uganda. The experiment was carried out at the Makerere University Agricultural Research Institute, Kabanyolo, using a Randomized Complete Block Design with three replicates. Three application rates of Choradelta were tested alongside Mac-Delta Extra (positive control) and an untreated control (negative check). All Choradelta application rates and Mac-Delta Extra significantly reduced pest infestations, resulting in increased cabbage head weight, improved growth, and better head quality compared to the untreated control. The recommended dose of Choradelta achieved the highest efficacy against both pests and is recommended for integration into cabbage pest management programs in Uganda.