Field efficiency of the novel biocide spinosad singular, mixed with different groups of insecticides and compared with other biocide in sequence experiment on cotton leaf worm Spodoptera littoralis (boisd.)
Abstract: SUMMARY
The objective of this research was to evaluate the field efficiency of one novel biocide (Spinosad) singular and mixed with different groups of insecticides and comparing this novel biocide with Bacillus thuringiensis in sequence experiments against cotton leafworm Spodoptera littoralis (Boisd.). Spinosad gave moderately initial and residual effects 58.70 and 75.95 % when tested singular, whereas the most pronounced initial effect was achieved when Spinosad was mixed with Methoxyfenozide giving 97.39% reduction. Regarding the residual effect, addition of tested insecticides to Spinosad induced raising in the activity of this compound than that obtained when tested singular .The highest residual activity was noticed when Spinosad was mixed with Chlorpyrifos resulting in 93.08% reduction. Spinosad surpassed B.t. when used in one application or in two applications with the single continuous system and alternating system. For the initial effect (after two days from the first application), Spinosad gave reduction in infestation ranging between 50.51 and 76.36 % while for B.t. it ranged between 15.21 and 36.40 %. Comparing Spinosad with B.t. in sequence experiments (two application with 7 days intervals), the single continuous system of Spinosad (Spinosad - Spinosad) gave 84.60 % while (B.t - B.t) induced 66.67 % reduction in infestation according to the general mean of reduction percentage. Regarding the alternating system, the general mean of reduction percentage in pest infestation was arranged in a descending order as follows: (Spinosad - Chorfluazuron), (Spinosad - Methoxyfenozide), (B.t - Methoxyfenozide) and (B.t - Chorfluazuron) being 76.37, 74.53, 55.01 and 53.67 %, respectively.
Publication year 2006
Pages 91-99
Availability location معهد بحوث وقاية النباتات
Availability number
Organization Name
City القاهرة
serial title مجلة الجمعية المصرية لعلم الحشرات
ISSN 1110-0885
Author(s) from ARC
External authors (outside ARC)
    ليلي رجب علي الجوهري كلية الزراعه جامعه المنصورة
Agris Categories Protection of plants - General aspects
AGROVOC
TERMS		 Bacillus thuringiensis. Bacteria. Biopesticides. Coleoptera. Insecticides. Spodoptera littoralis. Thysanoptera.
Publication Type Journal
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