EFFICACY OF PESTICIDE DEGRADING NATIVE BACTERIA AS PGPR IN MAIZE (Zea mays L.)
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Date
2021
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DEPARTMENT OF AGRICULTURAL MICROBIOLOGY B. A. COLLEGE OF AGRICULTURE ANAND AGRICULTURAL UNIVERSITY ANAND
Abstract
The study was conducted with the aim to isolate and characterize the plant growth
promotion activity of chlorpyrifos, profenofos and atrazine degrading native bacteria. Soil
samples were collected from different research farms of Anand Agricultural University,
Anand having history of pesticide application. Total 21 bacterial isolates were obtained
following enrichment isolation technique from soil samples and screened for their
pesticide degradation efficiency. Total 6 isolates were found effective for chlorpyrifos
degradation, 6 for profenofos and 9 were found effective for the degradation of
atrazine. Among these isolates, 2 best isolates were selected for each pesticide on the
basis of their ability to utilize respective pesticide at higher concentration as sole source
of carbon and energy. Based on results of the polyphasic characterization isolate CN1 was
identified as Pseudomonas nitroreducens AAUCP 1 and CN 3 as Pseudomonas
alcaligenes AAU CP 3 fond to degrade chlorpyrifos effectively; profenofos degrader
isolate PN3 was identified as Pseudomonas aeruginosa AAUPF 3 and P3 as
Pseudomonas stutzeri AAUPF 2; atrazine degrading isolates A2 identified and designated
as Paenarthrobacter ureafaciens AAUATR 2 and isolate AN4 as Pseudomonas
taiwanensis AAU ATR 4.