ANASTOMOSIS GROUPS OF RHIZOCTONIA SOLANI ISOLATED FROM SUGARBEET AND THEIR VIRULENCE IN RELATION TO CROP SEQUENCE
EL-KHOLY, M. (1994). ANASTOMOSIS GROUPS OF RHIZOCTONIA SOLANI ISOLATED FROM SUGARBEET AND THEIR VIRULENCE IN RELATION TO CROP SEQUENCE. EKB Journal Management System, 72(2), 483-494. doi: 10.21608/ejar.1994.450699
MOSTAFA M. A. EL-KHOLY. "ANASTOMOSIS GROUPS OF RHIZOCTONIA SOLANI ISOLATED FROM SUGARBEET AND THEIR VIRULENCE IN RELATION TO CROP SEQUENCE". EKB Journal Management System, 72, 2, 1994, 483-494. doi: 10.21608/ejar.1994.450699
EL-KHOLY, M. (1994). 'ANASTOMOSIS GROUPS OF RHIZOCTONIA SOLANI ISOLATED FROM SUGARBEET AND THEIR VIRULENCE IN RELATION TO CROP SEQUENCE', EKB Journal Management System, 72(2), pp. 483-494. doi: 10.21608/ejar.1994.450699
EL-KHOLY, M. ANASTOMOSIS GROUPS OF RHIZOCTONIA SOLANI ISOLATED FROM SUGARBEET AND THEIR VIRULENCE IN RELATION TO CROP SEQUENCE. EKB Journal Management System, 1994; 72(2): 483-494. doi: 10.21608/ejar.1994.450699

ANASTOMOSIS GROUPS OF RHIZOCTONIA SOLANI ISOLATED FROM SUGARBEET AND THEIR VIRULENCE IN RELATION TO CROP SEQUENCE

Egyptian Journal of Agricultural Research
Volume 72, Issue 2, June 1994, Pages 483-494    PDF (2.88 M)
Document Type: Original Article
DOI: 10.21608/ejar.1994.450699
Author
MOSTAFA M. A. EL-KHOLY
Research Plant Pathologist, Sugar Crops Research Institute, Agricultural Research Centre, Giza, Egypt.
Abstract
Eight isolates of Thanatephorus cucumeris Frank (Dank) (Rhizoctonia solar?, Kuhn) isolated from sugarbeet seedlings and roots were multinuclate. Considering anastomosis, the isolates fell into two groups corresponding to AG-2 and AG-4. A greenhouse test was conducted to determine the effect of cotton, soybean, sugarbeet, beams and corn as crops preceding sugar-beet on Rhiroctonia seedling disease of the latter. All isolates of AG-2 and AG-4 showed different degrees in infec‌tion percentage and disease severity on seedling stage (15 and 30 days) on all,crops. Cotton, soybean and sugarbeet significantly increased pre- and post-emergence damping-off, while beans and corn were less conducive. Therefore, lower disease incidence in pre- and post-emergence stages could be obtained by not following cotton, soybean, or sugarbeet. Advantage of reduced damping-off in sugarbeet following corn in rotation is apparent.
Statistics
Article View: 32
PDF Download: 34