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Incidence and control of APHID - transmitted viral disease of Capsicum annum as effected by different weather conditions

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dc.contributor.authorDucusin, Mylyn Joy S.
dc.contributor.authorCalinging, Veronica B.
dc.date.accessioned2025-09-24T06:34:28Z
dc.date.available2025-09-24T06:34:28Z
dc.date.issued2005-03
dc.descriptionFull text.
dc.description.abstractThis study was conducted mainly to find out the incidence of aphid - transmitted virus disease of sweet pepper, and to test the effectiveness of systemic and non - systemic insecticide and the use of net as plant covering in preventing or controlling the incidence of the disease. This study was conducted in Dungon Camp I, Tuba Benguet, from March 2004 to November 2004 The Randomized Complete Block Design (RCBD) was employed in this study. There were four treatments replicated three times, which were . as follows: To (Control) - no net; no insecticide; TI - use of fine net as plant covering; T2 - use of non - systemic insecticide; and T3 - use of systemic insecticide. The experiment was conducted twice, first time during the dry season and the second during the rainy season. Virus disease incidence as assessed by counting the number of plants infected by virus sixty and ninety days after transplanting, and by recording the yield in terms of number and weight of marketable fruits. The highest number of virus - infected plants in both sixty and ninety days after transplanting observed from To (no net, no insecticide) while the least was observed in Tl (Plants covered with net). On the other hand, the highest number of marketable fruits was obtained from T1 while the least from To. Likewise, Tl outyielded all other treatments in terms of weight of marketable fruits, while the lowest was recorded from T0. The incidence of aphid - transmitted virus disease was greatly affected by the different planting seasons. The disease was observed to have higher incidence during the dry than the rainy season. The combined means of both. seasons of all treatments in all observations show that Tl (plants covered with fine net) was the most effective method in controlling the incidence of the virus disease. The used of either systemic or non-systemic insecticide was proven to be a useless endeavor. The Nicotiana tabacum_cv. White Burley used as an indicator plant in the Sap Transmission Test, developed clear manifestations of symptoms which proved that the suspected virus disease that infected the plants was really caused by virus. The yield in terms of number and weight of fruits of sweet pepper was greatly influenced by the incidence of the aphid - transmitted viral disease. The higher the incidence of the disease, the lower the yield of sweet pepper.
dc.identifier.citationDucusin, M. J. S. & Caliging, V. B. (2005) Incidence and control of APHID - transmitted viral disease of Capsicum annum as effected by different weather conditions [Unpublished Undergraduate thesis]. Don Mariano Marcos Memorial State University - South La Union Campus, Agoo, La Union.
dc.identifier.urihttps://lakasa.dmmmsu.edu.ph/handle/123456789/446
dc.language.isoen_US
dc.publisherDon Mariano Marcos Memorial State University - South La Union Campus
dc.sdgSDG 3
dc.titleIncidence and control of APHID - transmitted viral disease of Capsicum annum as effected by different weather conditions
dc.typeThesis
dspace.entity.typePublication
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