The comparative evaluation of phytophagous and natural enemy densities on tomato-corn polyculture

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Published: Jul 4, 2013
Keywords:
polyculture, phytophagous, natural enemies, cultural control, insects, viruses, biological control

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A. León
Instituto Nacional de Ciencias Agrícolas

Abstract

This experimental work shows the results of a comparative study on the population behavior of phytophagous and natural enemies, besides the presence of virus symptoms caused by geminivirus in three tomato varieties (INCA-17, INCA-9-1 and Lignon) in the systems of monocultures and polycultures with corn. It was carried out at the experimental areas from the National Institute of Agricultural Sciences, on a compacted Red Ferralitic soil since early January up to the end of April, 1998. The treatments studied were seven: tomato-corn polycultures and monocultures of the three tomato varieties and corn
monoculture. Each treatment was 20 m long by 6.3 m wide making up approximately 900 m2 of the evaluated area. On weekly samplings, the amount of adults was evaluated by visual inspection in the field, whereas immature phases and parasitoid emergence in the laboratory. It was proved that tomato-corn polyculture has a dissuasive influence on the development of pest populations in tomato crop besides enabling colonization by pest natural enemies; there were also less symptoms of virosis in polycultures than in monocultures. A varietal effect was detected on the behavior of population densities in both systems, as well as on the presence of the virus disease.

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How to Cite
León, A. (2013). The comparative evaluation of phytophagous and natural enemy densities on tomato-corn polyculture. Cultivos Tropicales, 21(1), 53–60. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/726
Issue
Vol. 21 No. 1 (2000)
Section
Original Article

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