PJB-2024-534
COMPARATIVE ANALYSIS OF BIOCONTROL AGENTS IN CONTROLLING COMMON SCAB OF POTATO IN DIFFERENT CULTIVATION SYSTEMS
MUBASHAR SALEEM
Abstract
Common scab of potato, caused by Streptomyces scabies, is a significant disease of potato and is responsible for heavy economic losses globally. Among current control measures, particularly the use of fungicides found to be insufficient, so bio-control method was adopted. Among 13 rhizobacterial isolates two strains i.e RH6 and RH8 were found to be most effective against S. scabies in-vitro, exhibiting 13mm and 12mm inhibition zones respectively. Maximum, plant height, fresh weight and yield were 23.57cm, 40.88g and 932.5g respectively when rhizobacterial strains were applied in combination with garden grass mulch (RP+MG) as compared to the control and the lowest yield 291g was recorded in control treatment. However, a high level of disease control and yield was observed when combination of rhizobacterial strains and garden grass mulch were used.
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