Data/hora: 04/06/2024 01:01:34

Provedor de dados: 	106	
País: 	Thailand	
Título: 	กระบวนการปฏิบัติเพื่อพัฒนาการจัดการโรคข้าวโพดโดยชีววิธี

Development produced of biological control for disease management of corn	
Autores: 	Sutruedee Prathuangwong; Supot Kasem; Sunanthanat Nurapak; Waraporn Popakdeepan; Nalina Hemsanit.	
Data: 	2012-05-08	
Ano: 	2010	
Palavras-chave: 	Corn; Plant diseases; Antagonist; Dose response; Application pattern; Induced systemic resistance; ข้าวโพด; โรคพืช; การจัดการ; เชื้อปฏิปักษ์; จุลินทรีย์ปฏิปักษ์; จุลินทรีย์ท้องถิ่น; เชื้อแบคทีเรียปฏิปักษ์; ความเข้มข้นที่เหมาะสม; ลักษณะการใช้; การชักนำภูมิต้านทานพืช; การควบคุมโรคโดยชีววิธี; ผลผลิต.	
Resumo: 	Antagonist was applied as either seed or foliar treatments and the efficacy of disease suppression was determined by disease incidence and systemic resistance induction. Under greenhouse, the threshold concentration of each antagonist required for significant (P=0.05) suppression of BLS was 1*10**(6) and 1*10**(8) cfu/ml for seed and foliar spray applications respectively. Combined seed and foliar treatments with antagonist provided higher induction of plant resistance than application either seed or foliar alone, as account by correlated accumulation of defense-related enzyme activity, beta-1,3-glucanase. Field experiment that revealed 54.7 percent severe epidemic of BLS resulted in 62.2 percent  disease control respectively according to the experimental model investigated. The procedure threshold of antagonist application obtained in this study including seed bacterization, 3-foliar spray intervals, adjusted to the production cycle of plant when reached 14, 21, and 28 days after planting significantly (P=0.05) provided highest disease suppression (62.2 percent disease control) and increased beta-1, 3-glucanase activity compared to seed bacterization with 2-foliar applications. Increasing frequency of antagonist spray to level higher than 3 times did not result in a significant improvement of disease suppression. The native biocontrol agent alternative used as either seed or foliar spray showed that strain PCL21 gave the best plant growth promotion of corn seedlings  and seed germination where P38 demonstrated the higher disease suppression. Combined native strains of PCL21 seed bacterization followed by P38 foliar spray therefore, resulted in highest disease suppression, induction of resistance and yield which their control efficacy was equivalent (P=0.05) to a standard strain SP007s (ISR-P) and recommended chemical control.	
Idioma: 	Thailandês	
Identificador: 	Proceedings of the 4th Workshop of Corn and Sorghum Research Project of Kasetsart University: Corn and sorghum yield increasing to improve the quality of life and environmental sustainability, Bangkok (Thailand), p. 243-259

http://anchan.lib.ku.ac.th/agnet/handle/001/4680

การประชุมเชิงปฏิบัติการโครงการวิจัยแม่บทข้าวโพดและข้าวฟ่าง มหาวิทยาลัยเกษตรศาสตร์ ครั้งที่ 4: เรื่องการเพิ่มผลผลิตข้าวโพดและข้าวฟ่างเพื่อพัฒนาคุณภาพชีวิตและสิ่งแวดล้อมอย่างยั่งยืน, กรุงเทพฯ, หน้า 243-259