Journal
BIOCONTROL
Volume 55, Issue 6, Pages 741-751Publisher
SPRINGER
DOI: 10.1007/s10526-010-9301-2
Keywords
Intercropping; Aromatic plants; Pear orchard; Arthropod diversity; Community structure; Pests
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Funding
- Key Projects in the National Science and Technology Pillar Program in the Eleventh Five-year Plan Period [2008BAD92B08-1]
- Beijing Municipal Natural Science Foundation [6102004]
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Five aromatic plants, Centaurea cyanus, Saturela hortensis, Nepeta cataria, Agerarum houstonianum, and Ocimum basilicum, were assessed as intercrops in a pear orchard, and all significantly reduced the pest population compared with that in the plot natural grasses. The decrease was particularly marked for C. cyanus, S. hortensis, and A. houstonianum, and plots intercropped with these aromatic plants also had significantly higher values of ratios of natural enemies to pests, Simpson's index, the Shannon-Wiener index, and the evenness index of arthropod species at the flowering, immature-fruits, and fruit-growth stages of the pear trees. In none of the plots except that intercropped with C. cyanus, however, were there any significant changes in the abundance of predators and parasitoids. Intercropping with aromatic plants in pear orchards proved beneficial to the main crop by repelling pests and regulating the structure of the arthropod community in the pear orchard ecosystem.
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