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Spider community shift in response to farming practices in a sub-humid agroecosystem of southern Africa

Author: Mashavakure, N.
Author: Mashingaidze, A.B.
Author: Musundire, R.
Author: Nhamo, N.
Author: Gandiwa, E.
Author: Thierfelder, C.
Author: Muposhi, V.K.
Year: 2019
ISSN: 0167-8809
ISSN: ISSN: 0167-8809
URI: https://hdl.handle.net/10883/19687
Descriptors: Araneae
Descriptors: Agroecosystems
Descriptors: Southern Africa
Abstract: Most spiders are generalist predators and important biological control agents of various insect pests of agricultural crops. A study was conducted to determine the impact of cultural practices on the abundnace and diversity of soil surface-dwelling spiders (Araneae). Two experiments were conducted at the Chinhoyi University of Technology experimental farm, Zimbabwe, over the 2013/2014 and 2014/2015 cropping seasons. The two experiments were conducted using a split-split-plot design arranged in randomized complete blocks using tillage, mulching, fertilizer and weeding management as factors, with spider diversity being a response variable. Tillage and mulching had strong effects on spider composition. In the first experiment that involved tillage system as the main plot factor, conventional tillage had a negative effect on ground dwelling taxa as evidenced by high negative taxon weights of Lycosidae, Gnaphosidae and Salticidae. In the second experiment, mulching had strong positive effects on ground dwelling spiders with the strongest being Lycosidae followed Gnaphosidae and Thomisidae. The no-tillage option increased richness by 14.5% compared to conventional tillage. The effective number of species was higher in the no-tillage option (exp^H? = 2.2) than in conventional tillage (exp^H? = 1.8). Our results suggest that no-tillage and retention of plant residue on the soil surface facilitate the abundance of ground and plant wandering spiders. More research is required to assess the specific benefits associated with this increased abundance, such as biological pest control.
Language: English
Publisher: Elsevier
Publisher: Elsevier
Copyright: CIMMYT manages Intellectual Assets as International Public Goods. The user is free to download, print, store and share this work. In case you want to translate or create any other derivative work and share or distribute such translation/derivative work, please contact CIMMYT-Knowledge-Center@cgiar.org indicating the work you want to use and the kind of use you intend; CIMMYT will contact you with the sutable license for that purpose.
Type: Article
Place: Amsterdam, Netherlands
Pages: 237-245
Journal: Agriculture, Ecosystems and Environment
Journal volume: 12
DOI: 10.1016/j.agee.2018.11.020
Keywords: No-Tillage
Keywords: Predator Relationships
Keywords: Spider Diversity
Keywords: Weeding Effects
Agrovoc: AGRICULTURAL SCIENCES AND BIOTECHNOLOGY
Agrovoc: BIOLOGICAL PEST CONTROL
Agrovoc: FERTILIZATION


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  • Sustainable Intensification
    Sustainable intensification agriculture including topics on cropping systems, agronomy, soil, mechanization, precision agriculture, etc.

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