Evaluación de la incidencia y severidad del pulgón (Aphididae oleracea) en el cultivo de col (Brassica oleracea) con dos métodos de control
Cabbage cultivation has been severely attacked by Aphididae oleracea (aphids), causing direct and indirect damage including deformations and discoloration of the leaves, and even causing the death of the plant. In the research carried out, the incidence and severity of aphids in cabbage crops were e...
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| Médium: | bachelorThesis |
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2025
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| On-line přístup: | https://dspace.ueb.edu.ec/handle/123456789/8477 |
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Přidat tag | Shrnutí: | Cabbage cultivation has been severely attacked by Aphididae oleracea (aphids), causing direct and indirect damage including deformations and discoloration of the leaves, and even causing the death of the plant. In the research carried out, the incidence and severity of aphids in cabbage crops were evaluated, with two control methods. The objectives were: I) To determine the incidence and severity of aphids in each treatment; II) To assess cabbage yield under the application of two control methods. The treatments studied were: T1 Chemical control (Acephate Insecticide PM 2.75 l/ha), T2 Ethological control (Yellow traps). The type of analysis was dependent T test and averages. The variables evaluated were: percentage of takeup (PP), days to aphid appearance (DAP), number of cabbages per plot (NRP), weight per plant (PP), weight per plot (W/W) and yield per hectare (R kg/ha), quantification of cabbage with aphid damage (CRP); aphid incidence (IP), aphid severity (SP). The statistical results show that the T2 treatment (ethological control - yellow traps) presented the highest average take-up, with 92,94%, 15 days after transplanting. Likewise, this treatment showed a delay in the appearance of the aphid, with 29 days, which was favorable for the crop. The ethological control promoted a more uniform development of the plants, generating a greater weight gain per plant, reaching 6,61 kg. This contributed to a significantly high yield of 17 264,71kg/ha. The lowest incidence of aphids was also recorded at 30, 60 and 90 days, while aphid severity increased significantly at 90 days, with 52,2%. This increase in severity towards the end of the cycle affected the ability of cabbage plants to complete their development optimally, compromising head formation and quality. |
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