COMPARATIVE EVALUATION OF INSECT BIODIVERSITY IN TOMATO-MAIZE POLYCULTURE

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Published: May 31, 2013
Keywords:
biodiversity, companion crops, plant pests, natural enemies, maize, tomato, harmful insects

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A. León
Instituto Nacional de Ciencias Agrícolas

Abstract

The results of an insect biodiversity study are shown in this paper. Three varieties of tomato (Inca-17, Inca-9-1 and Lignon) in monoculture and associations with corn systems, by using four ecological indicators (Shannon- Weaver Biodiversity, Simpson�??s Dominance, Pielou�??s Uniformity and Margaleff�??s Richness) were evaluated. This work was carried out on a compacted red Ferralitic soil from the experimental areas of the National Institute of Agricultural Sciences, between the beginning of January and the end of April, 1998. The treatments studied were seven: tomato-maize polyculture (cv. Inca-17), tomato-maize polyculture (cv. Inca-9-1), tomato-maize polyculture (cv. Lignon), and tomato monoculture of the former varieties and corn monoculture. Each treatment was 20 m long x 6.3 m wide, for a total of approximately 900 m2 of the evaluated area. This study was carried out by weekly samplings in the field through visual method for counting adults, and immature phases were counted too. Parasitoid emergency was evaluated in the laboratory. Biodiversity ecological indicators presented a higher stability, richness, equilibrium and diversity and a lower dominance in the insect communities of the associations than in monocultures. A varietal effect was not detected on the behavior of these biodiversity indicators.

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How to Cite
León, A. (2013). COMPARATIVE EVALUATION OF INSECT BIODIVERSITY IN TOMATO-MAIZE POLYCULTURE. Cultivos Tropicales, 22(1), 5–9. Retrieved from https://ediciones.inca.edu.cu/index.php/ediciones/article/view/710
Issue
Vol. 22 No. 1 (2001)
Section
Original Article

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