University of Khartoum

Abundance and Biomass of Epigeal Predatory Arthropods of Berseem (Medicago sativa) Field in Shambat

Abundance and Biomass of Epigeal Predatory Arthropods of Berseem (Medicago sativa) Field in Shambat

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Title: Abundance and Biomass of Epigeal Predatory Arthropods of Berseem (Medicago sativa) Field in Shambat
Author: Elfaig, Elzain Ali
Abstract: This study was done in the season 2002 – 2003 in alfalfa ecosystem in the field near Faculty of Agriculture, University of Khartoum at Shambat. The objectives of the study is the abundance and biomass of epigeal predatory arthropods feed on insect pests of alfalfa in the field area. Our study used two different methods for the collection, pitfall traps and square flooding methods. The methods were varied at results; also agronomical climatical factors may influence the persistence and dispersal of insect’s pests and the predatory arthropods in alfalfa ecosystem. Also the study determines the biomass of surface predatory arthropods collected in alfalfa field area estimated as kg/feddan. The study found the biomass of spiders 52.25 kg/feddan, carabids 21.58 kg/feddan, Staphylinids 18.22 kg/feddan, Hymenoptera 36.36 kg/feddan and Orthoptera 39.11 kg/ feddan. The total number of predatory arthropods collected by means of pitfall traps at different dates, Araneae 54, Coleoptera 24, Orthopetra 10, Hymoneptera 23 and others 3. while the total number collected through the square flooding method; Orthopetra 4, Araneae 7, Coleopetra 15, Hymonoptera 17 and others 8.
URI: http://khartoumspace.uofk.edu/handle/123456789/12883
Date: 2015-06-16


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