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Testing the Suitability of the Insecticide Worm-Out against Cabbage Worm Infestation of Crucifers - Case Study Example

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This paper "Testing the Suitability of the Insecticide Worm-Out against Cabbage Worm Infestation of Crucifers" focuses on the fact a new insecticide, “Worm-Out,” was tested against cabbage worm in four crucifers namely, cabbage, broccoli, cauliflower and Brussels sprouts. …
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Testing the Suitability of the Insecticide Worm-Out against Cabbage Worm Infestation of Crucifers
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Download file to see previous pages In the case of broccoli and cauliflower, “Worm-Out” was effective in completely eliminating worm activity when used weekly or even less frequently that is, once in 2, 3 or 4 weeks. But under a weekly or a once-in-2-weeks treatment, plants accumulated residues beyond safe limits. Applications once in 3 and 4 weeks, caused accumulations of the insecticide amounting to 3 parts/1000 and 2 parts/1000, respectively. It is recommended that “Worm-Out” should be used once in two weeks in cabbage and Brussels sprout, and once in 4 weeks in broccoli and cauliflower to eliminate the larvae completely.

Crucifers including cabbage, broccoli, cauliflower and Brussels sprouts are important vegetable crops subjected to attack by lepidopterous pests especially cabbageworm, Pieris rapae (L.). Concern about the possible adverse effects of agricultural chemicals on human health as well as the environment has led to an interest in reducing chemical inputs in vegetable growing. A new insecticide, “Worm-Out” was developed by the head of the Product Development Department of United Chemical, Inc., Dr J. Anderson, against the cabbage worm. The insecticide was supposedly also not absorbed by the plants. To test the properties of the new insecticide, an experiment was conducted on four crucifers namely, cabbage, broccoli, cauliflower and Brussels sprouts. The experiment lasting for 13 weeks, that is until harvest time, was conducted in a greenhouse on direct-seeded cabbage and other crucifers.

The objectives of the study were to determine (1) the efficacy of “Worm-Out” in the elimination of cabbage worm, (2) if any amount of the insecticide is absorbed by the plants, and (3) the optimum frequency of application of “Worm-Out” required to eliminate the worms effectively and safely.

Quality seeds of cabbage, broccoli, cauliflower and Brussels sprouts certified and tested to be disease-free were used in the experiment.   ...Download file to see next pagesRead More
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