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Spiders in sprayed and unsprayed cotton fields in Israel, their interactions with cotton pests and their importance as predators of the Egyptian cotton leaf worm, spodoptera littoralis
Year:
1987
Source of publication :
Phytoparasitica
Authors :
Mansour, Fadel
;
.
Volume :
15
Co-Authors:
Mansour, F., Dept. of Entomology, ARO, Newe Ya’ar, Haifa Post, Israel
Facilitators :
From page:
31
To page:
41
(
Total pages:
11
)
Abstract:
Densities of spiders in sprayed and unsprayed cotton fields were determined during 1981 and 1982. Eighteen families were found in an unsprayed field and 13 in sprayed fields. Species of Clubionidae, Gnaphosidae and Philodromidae comprised more than half of the total number collected. The mean weekly number of spiders per meter of cotton row was 9.1 in the unsprayed field and 5.1–5.6 in sprayed fields. Spider populations fluctuated similarly in sprayed fields in both observation years, with only one peak in July, whereas there were two peaks in the unsprayed field. Spiders played an important role in suppressing pest populations and in delaying pest outbreaks early in the cotton growing season. Thus, early pesticide applications to cotton fields are unnecessary. In a biocontrol experiment, spiders suppressed larvae of the Egyptian cotton leaf worm, Spodoptera littoralis (Boisd.), thereby reducing damage to cotton leaves. © 1987, Springer Science + Business Media B.V.. All rights reserved.
Note:
Related Files :
COTTON
predation
Spiders
Spodoptera littoralis
Show More
Related Content
More details
DOI :
10.1007/BF02980517
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
21721
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:46
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Scientific Publication
Spiders in sprayed and unsprayed cotton fields in Israel, their interactions with cotton pests and their importance as predators of the Egyptian cotton leaf worm, spodoptera littoralis
15
Mansour, F., Dept. of Entomology, ARO, Newe Ya’ar, Haifa Post, Israel
Spiders in sprayed and unsprayed cotton fields in Israel, their interactions with cotton pests and their importance as predators of the Egyptian cotton leaf worm, spodoptera littoralis
Densities of spiders in sprayed and unsprayed cotton fields were determined during 1981 and 1982. Eighteen families were found in an unsprayed field and 13 in sprayed fields. Species of Clubionidae, Gnaphosidae and Philodromidae comprised more than half of the total number collected. The mean weekly number of spiders per meter of cotton row was 9.1 in the unsprayed field and 5.1–5.6 in sprayed fields. Spider populations fluctuated similarly in sprayed fields in both observation years, with only one peak in July, whereas there were two peaks in the unsprayed field. Spiders played an important role in suppressing pest populations and in delaying pest outbreaks early in the cotton growing season. Thus, early pesticide applications to cotton fields are unnecessary. In a biocontrol experiment, spiders suppressed larvae of the Egyptian cotton leaf worm, Spodoptera littoralis (Boisd.), thereby reducing damage to cotton leaves. © 1987, Springer Science + Business Media B.V.. All rights reserved.
Scientific Publication
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