Potential of intercropping pesticidal plants with common bean in promoting natural enemies for pest management in agroecosystems
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 11, Issue 6
Abstract
Use of pesticidal plants (PPs) is now evolving as one of the essential means to be used in protection of crop plants or produces from pest attack and substitute synthetic chemical pesticides. The PPs possess an array of properties such as toxicity, anti-feedance, repellency, deterrents and attractants and insect growth regulatory activities against important pests. Planting different crops in the same fields at the same time (intercropping/mixed or strip cropping) encourages biodiversity and abundance of natural enemies (NEs). Also, intercropping crops with non-crops encourages the abundance of NEs and parasitoids and therefore, effective biological control strategy in an economically and environmentally sound way of managing pests for grasping the maximum yield potential of crop. Examples of PPs which have been reported to portray a good result in terms of repelling pests and NE enhancement when allowed to grow with crop plants are Tagetes minuta, Bidens Pilosa, Ageratum conyzoides, Galinsoga parviflora, Cleome rutidospema, Ocimum suave, Hyptis suaveolens and Nasturtium indicum. In this study, comprehensive information on the use of PPs as repellants to insect pests and promotion of natural enemies in common bean production is discussed.
Authors and Affiliations
Ancila O. Karani, Patrick A. Ndakidemi, Ernest R. Mbega
Keywords
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