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Use of trichogramma ostriniae (hymenoptera trichogrammidae), to control the asian corn borer, ostrinia furnacalis (lepidoptera pyralidae)

By: Tseng, C.T | Centro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Mexico, DF (Mexico) | 7, Proceedings of the Asian Regional Maize Workshop Los Baños (Philippines) 23-27 Feb 1998.
Contributor(s): Vasal, S.K.|Gonzalez Ceniceros, F.|XiongMing, F [eds.].
Material type: materialTypeLabelBookAnalytics: Show analyticsPublisher: Los Baños, Laguna (Philippines) PCARRD : 2000Description: p. 339-356.Subject(s): Bacillus thuringiensis | Biological control | Crop yield | Economic growth | Insecticides | Maize | Ostrinia | Pest control | Plantations | Price policies | Seed cropsSummary: The continuous increase in economic growth in last decade and under the encouragement of guaranteed purchased price policy, corn planting area increased rapidly. The most serious pest on corn crop, the Asian corn borer Ostrinia fumacalis Guenee, became economically more important. In order to effectively control this pest and reduce the usage of pesticide the Council of Agriculture, Executive Yuan, launched a biologically controlling corn borer program in 1984. Under this program an egg parasitoid, Tricho!!ramm ostriniae, was used as a biological control agent and a stored grain pest, Corcyra cephalonica Stainton, was used as an alternate host for the mass production of T. ostriniae in the laboratory .This made possible the mass release of I. ostriniae to control the Asian corn borer O.furnacalis Guenee on both field corn and sweet corn. For saving-Iabor in the mass production of T. ostriniae, one egg card machine had been developed. The machine is 10 times faster than laborer in producing egg cards. It saves about 2625 hours and US$ 6,563.0 in every finish of 3,000,000 egg cards (3.5 x 1.5 cm). Although the mass release of T. ostriniae can significantly increase the parasitism percentage of egg masses, grain yield and net return per hectare by 8-20%, 11% and US$ 224 compared with conventional control method, it is necessary to combine these with two or three insecticide treatments on field corn. For sweet corn. T. ostriniae should be combined with three treatments of Bacillus thurin!!inesis and one low-toxicity insecticide (4.6% W. P. pay-off) in early whorl stage. In addition, the tassels should be removed before pollen-shedding in two out of every three rows of sweet corn. This gives as satisfactory control as chemicals in reducing damage caused by corn borer on sweet corn. Each year the acreage practiced with the mass release of T. ostriniae was around 1,500 -18,000 hectares. From 1984 up to 1996, the total acreage and number of egg cards covered in the integrated control were 225,958 ha and 52,931,615 respectively. The long term of mass release of T. ostriniae has shown accumulative effect on suppressing the corn borer population density. The number of male moths captured per virgin female trap per month had reduced from 12.2 in 1985 to 7.5 in 1995 in Chiayi, Poutzu area, Taiwan.Collection: CIMMYT Publications Collection
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Conference proceedings CIMMYT Knowledge Center: John Woolston Library

Lic. Jose Juan Caballero Flores

 

CIMMYT Publications Collection Look under series title (Browse shelf) 1 Available T631326
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The continuous increase in economic growth in last decade and under the encouragement of guaranteed purchased price policy, corn planting area increased rapidly. The most serious pest on corn crop, the Asian corn borer Ostrinia fumacalis Guenee, became economically more important. In order to effectively control this pest and reduce the usage of pesticide the Council of Agriculture, Executive Yuan, launched a biologically controlling corn borer program in 1984. Under this program an egg parasitoid, Tricho!!ramm ostriniae, was used as a biological control agent and a stored grain pest, Corcyra cephalonica Stainton, was used as an alternate host for the mass production of T. ostriniae in the laboratory .This made possible the mass release of I. ostriniae to control the Asian corn borer O.furnacalis Guenee on both field corn and sweet corn. For saving-Iabor in the mass production of T. ostriniae, one egg card machine had been developed. The machine is 10 times faster than laborer in producing egg cards. It saves about 2625 hours and US$ 6,563.0 in every finish of 3,000,000 egg cards (3.5 x 1.5 cm). Although the mass release of T. ostriniae can significantly increase the parasitism percentage of egg masses, grain yield and net return per hectare by 8-20%, 11% and US$ 224 compared with conventional control method, it is necessary to combine these with two or three insecticide treatments on field corn. For sweet corn. T. ostriniae should be combined with three treatments of Bacillus thurin!!inesis and one low-toxicity insecticide (4.6% W. P. pay-off) in early whorl stage. In addition, the tassels should be removed before pollen-shedding in two out of every three rows of sweet corn. This gives as satisfactory control as chemicals in reducing damage caused by corn borer on sweet corn. Each year the acreage practiced with the mass release of T. ostriniae was around 1,500 -18,000 hectares. From 1984 up to 1996, the total acreage and number of egg cards covered in the integrated control were 225,958 ha and 52,931,615 respectively. The long term of mass release of T. ostriniae has shown accumulative effect on suppressing the corn borer population density. The number of male moths captured per virgin female trap per month had reduced from 12.2 in 1985 to 7.5 in 1995 in Chiayi, Poutzu area, Taiwan.

English

0208|AGRIS 0201|AL-Maize Program|R01PROCE

Juan Carlos Mendieta

CIMMYT Publications Collection

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