CONCLUSIONS
The innoculative release of about 1,800 adults of C. flavipes per acre per year effectively controlled the sugarcane moth borer complex. The population of C. flcavipes and parasitization in release plots were signifi- cantly different than those in control plots at both locations every year. The average percent parasitization in release plots at Kampaeng Saen and Sai Yok were higher than those in control plots, being 8.95 and 9.28, 17.19 and 17.88 and 17.72 and 18.87 respectively in 1995, 1996 and 1997. These differences show the efficacy of C. flavipes as biological control agents of sugarcane moth borers complex.
The average percent infestation of sugarcane by larvae of sugarcane moth borers conlplex in release plots were significantly lower than those in control plots at both location every year. The average infestation in release plots at Kampaeng Saen and Sai Yok were 8.65 and 6.39; 5.77 and 5.71; and 5.38 and 4.85 respectively in 1995, 1996 and 1997. Average infestations were not quite low, but the role of C.flavipes in reducing infes- tation of sugarcane from about 15% in March and April to less than 2.0 % in November and December has shown the efficacy of C. flavipes in reducing population levels of sugarcane moth borers. This experiment shows the success of C. flavipes as a biological control agent of the sugarcane moth borers complex in Thailand.
REFERENCE
Cheng Wen Yi. (1994). Sugarcane stem borers of Taiwan. Proc. ISSCT 11 Sugarcane Entomology Workshop. Natal
CONCLUSIONS The innoculative release of about 1,800 adults of C. flavipes per acre per year effectively controlled the sugarcane moth borer complex. The population of C. flcavipes and parasitization in release plots were signifi- cantly different than those in control plots at both locations every year. The average percent parasitization in release plots at Kampaeng Saen and Sai Yok were higher than those in control plots, being 8.95 and 9.28, 17.19 and 17.88 and 17.72 and 18.87 respectively in 1995, 1996 and 1997. These differences show the efficacy of C. flavipes as biological control agents of sugarcane moth borers complex. The average percent infestation of sugarcane by larvae of sugarcane moth borers conlplex in release plots were significantly lower than those in control plots at both location every year. The average infestation in release plots at Kampaeng Saen and Sai Yok were 8.65 and 6.39; 5.77 and 5.71; and 5.38 and 4.85 respectively in 1995, 1996 and 1997. Average infestations were not quite low, but the role of C.flavipes in reducing infes- tation of sugarcane from about 15% in March and April to less than 2.0 % in November and December has shown the efficacy of C. flavipes in reducing population levels of sugarcane moth borers. This experiment shows the success of C. flavipes as a biological control agent of the sugarcane moth borers complex in Thailand. REFERENCE อี้เหวินเฉิง (1994) borers ก้านอ้อยของไต้หวัน Proc. ISSCT 11 อ้อยกีฏวิทยาประชุมเชิงปฏิบัติการ Natal
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