Record Details

Combined effects of biocontrol agents and soil amendments on soil microbial populations, plant growth and incidence of charcoal rot of cowpea and wilt of cumin

KRISHI: Publication and Data Inventory Repository

View Archive Info
 
 
Field Value
 
Title Combined effects of biocontrol agents and soil amendments on soil microbial populations, plant growth and incidence of charcoal rot of cowpea and wilt of cumin
Not Available
 
Creator Vijeta SINGH
Ritu MAWAR
Satish LODHA
 
Subject neem compost, radish compost, Macrophomina phaseolina, Fusarium oxysporum f. sp. cumini.
 
Description Not Available
Summary. Field experiments were conducted for 2 years to determine the effectiveness of combined use of two
biocontrol agents, Bacillus firmus and Aspergillus versicolor for control of Macrophomina phaseolina induced charcoal
rot of cowpea and Fusarium oxysporum f. sp. cumini induced wilt of cumin. The lowest level of plant mortality
(3‒4%) due to charcoal rot of cowpea was recorded when bacterium coated seeds were sown in radish compost
amended soil compared to the non-amended soil (13.8‒20.5%), but this was not significantly better than some
other treatments. Cowpea roots from B. firmus coated seeds had better nodulation than any of the individual A.
versicolor treatments. Although B. firmus coated seeds + A. versicolor + farmyard manure resulted in maximum
nodulation this was not significantly different to B. firmus seed coating. Root colonization by the combined biocontrol agent treatments was better than the individual biocontrol agent treatments. Combining A. versicolor with
farmyard manure supported the maximum populations of total fungi and actinomycetes. In both winter seasons,
the lowest incidence of wilt (1.0‒5.2%) on cumin was recorded when A. versicolor was amended with neem compost compared to the non-amended soil (5.7‒10.5%). Maximum colonization of A. versicolor on roots was observed
in B. firmus + A. versicolor + farmyard manure amended plots. During both years, the treatment combination of A.
versicolor in neem compost amended plots resulted in maximum populations of fungi, bacteria and A. versicolor in
the soil, which was greater than in the non-amended soil. Significant increases in disease control were not recorded
after single or repeated delivery of A. versicolor. These results suggest that combining B. firmus as seed coatings
with A. versicolor as soil applications gives improved control of M. phaseolina and Fusarium induced diseases on
legume and seed spice crops in arid soils.
Not Available
 
Date 2019-07-16T11:16:57Z
2019-07-16T11:16:57Z
2012-01-01
 
Type Research Paper
 
Identifier Not Available
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/21499
 
Language English
 
Relation Not Available;
 
Publisher Not Available