<p>The microbial population of fermented <i>Jeevamrit</i> bioformulation from different cattle breeds was analyzed to assess its plant growth-promoting (PGP) traits, enzyme production, and antifungal activity. Physico-chemical analysis of <i>Jeevamrit</i> showed the highest N, P, K, EC and pH in indigenous <i>Pahari</i> non-lactating cows. A total of 48 morphologically different bacterial isolates were characterized for PGP traits and antifungal activities. Six isolates were found positive for all PGP activities except HCN production irrespective of cattle breeds. Quantitative estimation showed the Jersey non-lactating isolate was best in phosphate solubilisation (125.02 ± 5.90&#xa0;µg/ml) and the Jersey lactating cow isolate for siderophore production (92.35 ± 5.68%), whereas the <i>Pahari</i> lactating isolate was found best in IAA production (76.05 ± 3.50&#xa0;µg/ml). Maximum antifungal activity against <i>Rhizoctonia solani</i><i>, </i><i>Sclerotonia sclerotiorum, Pythium aphanidermatum</i><i>, </i><i>Phytopthora</i> sp<i>., Alternaria alternata and Fusarium oxysporum</i> was found in Jersey lactating isolates. Six potential bacterial isolates were identified based on PGP, enzyme, and antifungal activities. Two isolates, JJL2 and JJL8, isolated from the Jersey breed, were identified as <i>Escherichia coli;</i> two isolates, JPL6 and JJL7, isolated from the <i>Pahari</i> and Jersey lactating breeds, belong to <i>Klebsiella quasipneumoniae;</i> JJD2<i>,</i> isolated from the Jersey dry breed, was identified as <i>Sphingobacterium multivorum;</i> and JPL7, isolated from the <i>Pahari</i> lactating breed, showed maximum resemblance to <i>Enterobacter cloacae</i>. These six potential isolates were isolated from <i>Jeevamrit</i> bioformulation prepared from different cattle breeds, whereas <i>Microbacterium thalassium</i> strain PL3 was first reported from cow dung of the <i>Pahari</i> lactating breed. These potential strains of different cattle breeds can be potential means for plant health and disease management in an environmentally sustainable manner, either alone or in consortium or along with bioformulation.</p> Graphical Abstract <p></p>

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Exploration of beneficial microflora from Jeevamrit bioformulation of different cattle breeds for environmentally sustainable plant health and disease management in organic farming system

  • Shweta Sagar,
  • Jyoti Bala,
  • Rakesh Chauhan,
  • Rameshwar Kumar,
  • Anila Badiyal,
  • Abhishek Walia

摘要

The microbial population of fermented Jeevamrit bioformulation from different cattle breeds was analyzed to assess its plant growth-promoting (PGP) traits, enzyme production, and antifungal activity. Physico-chemical analysis of Jeevamrit showed the highest N, P, K, EC and pH in indigenous Pahari non-lactating cows. A total of 48 morphologically different bacterial isolates were characterized for PGP traits and antifungal activities. Six isolates were found positive for all PGP activities except HCN production irrespective of cattle breeds. Quantitative estimation showed the Jersey non-lactating isolate was best in phosphate solubilisation (125.02 ± 5.90 µg/ml) and the Jersey lactating cow isolate for siderophore production (92.35 ± 5.68%), whereas the Pahari lactating isolate was found best in IAA production (76.05 ± 3.50 µg/ml). Maximum antifungal activity against Rhizoctonia solani, Sclerotonia sclerotiorum, Pythium aphanidermatum, Phytopthora sp., Alternaria alternata and Fusarium oxysporum was found in Jersey lactating isolates. Six potential bacterial isolates were identified based on PGP, enzyme, and antifungal activities. Two isolates, JJL2 and JJL8, isolated from the Jersey breed, were identified as Escherichia coli; two isolates, JPL6 and JJL7, isolated from the Pahari and Jersey lactating breeds, belong to Klebsiella quasipneumoniae; JJD2, isolated from the Jersey dry breed, was identified as Sphingobacterium multivorum; and JPL7, isolated from the Pahari lactating breed, showed maximum resemblance to Enterobacter cloacae. These six potential isolates were isolated from Jeevamrit bioformulation prepared from different cattle breeds, whereas Microbacterium thalassium strain PL3 was first reported from cow dung of the Pahari lactating breed. These potential strains of different cattle breeds can be potential means for plant health and disease management in an environmentally sustainable manner, either alone or in consortium or along with bioformulation.

Graphical Abstract