Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz (2001) 74, 33-36

C. Sengonca, B. Liu and Y.J. Zhu (2001)
Efficiency of the mixed biocide GCSC-BtA against vegetable pests of different arthropod orders in the south-eastern China
Anzeiger für Schädlingskunde, Pflanzenschutz, Umweltschutz 74 (2), 33-36
Abstract: The present paper deals with the efficiency of the mixed biocide GCSC-BtA against vegetable pests of five orders of arthropod insects in the south-eastern China, i. e., diamondback moth, Plutella xylostella (L.); green peach aphid, Myzus persicae (Sulzer); yellow-fanded flea beetle, Phyllotreta vittata Fabricius; vegetable leaf miner, Phytomyza nigricornis Macquart; and vegetable spider mite, Tetranychus neocaledonicus Andre. The results show that the mixed biocide GCSC-BtA has a higher efficacy of control against all of the five pests than the commercial biocide B.t. and insecticide Diazinon. GCSC-BtA gave a higher mortality value of 92.18 % against P. xylostella as compared to the biocide B.t. with a value of 64.70 % and Diazinon with a value of 50.00 %. Similar mortalities were obtained with the other four pests regarding the efficacy of the three products tested against them.
The concentration-mortality regression equations were calculated by the probit analysis, from which the average mortalities were calculated. The values calculated for GCSC-BtA were 81.13 % for P. xylostella, 75 % for M. persicae and T. neocaledonicus, 69.23 % for P. vittata, and 61.03 % for P. nigricornis as compared to those caused by Diazinon: 33.33 %, 27.42 %, 66.31 %, 44.54 %, 19.65 % for P. xylostella, M. persicae, P. vittata, P. nigricornis, and T. neocaledonicus, respectively. Based on LC₅₀, P. xylostella was most susceptible to GCSC-BtA with a LC₅₀ value of 0.3445, followed by B.t. with a value of 0.8404 and Diazinon with a value of 1.3160. The LC₅₀ value of GCSC-BtA for M. persicae was 0.4660 which was about three times less than that of Diazinon. LC₅₀ value of GCSC-BtA for P. vittata was 0.3954 which was about the same as that of Diazinon. P. nigricornis and T. neocaledonicus were also much more susceptible to GCSC-BtA than to B.t. and Diazinon. It is concluded that GCSC-BtA kills more target pests than B.t. and is more effective than Diazinon in controlling the vegetable pests.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Cetin Sengonca

Research topic(s) for pests/diseases/weeds:
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Myzus persicae		China (south)
	Plutella xylostella		China (south)
	Tetranychus neocaledonicus		China (south)
	Phyllotreta vittata		China (south)
	Phytomyza affinis		China (south)