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DEVELOPMENT OF CONSORTIA OF PLANT GROWTH PROMOTING FLUORESCENT Pseudomonas SPECIES FOR MANAGEMENT OF APPLE REPLANT PROBLEM

KrishiKosh

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Title DEVELOPMENT OF CONSORTIA OF PLANT GROWTH PROMOTING FLUORESCENT Pseudomonas SPECIES FOR MANAGEMENT OF APPLE REPLANT PROBLEM
 
Creator VERMA, PANKAJ PRAKASH
 
Contributor KAUR, MOHINDER
 
Subject bacteria, planting, biological development, productivity, inorganic acid salts, fungi, vegetative propagation, apples, diseases, polysaccharides
plant growth promoting rhizobacteria (PGPR)
 
Description ABSTRACT
Apple replant disease has plagued apple growers for many years and is now found in most
fruit growing regions world-wide. The use of plant growth promoting rhizobacteria (PGPR) for the
benefits of agriculture and horticulture is gaining worldwide importance and viewed as a novel and
potential tool for providing substantial benefits to the horticulture.The present study was aimed to
isolate, characterize and develop fluorescent Pseudomonas formulation for management of replant
problem. The fluorescent Pseudomonas sp. are plant beneficial rhizobacteria with all the direct and
indirect plant growth promoting activities like phosphate solubilization, siderophore, antifungal and
production of HCN, ammonia, plant growth regulators (auxins, cytokinins and gibberellins) and lytic
enzymes. The development of formulation with compatible isolates will improve disease control
through synergy and lead to increased production of antibiotics at the site of colonization and there by
suppress the establishment of pathogenic microbes. Thirty eight fluorescent Pseudononas sp. were
screened out for various plant growth promoting activities in vitro and four viz., Pseudomonas putida
L, Pseudomonas fluorescens M and Pseudomonas aeruginosa J and B were selected on the basis of
plant growth promoting activities. These strains were used for preparation of liquid and carrier based
bioformulations. The shelf life of these strains were evaluated in all the carrier materials viz.,
coccopeat, Farm Yard Manure, spent mushroom substrate, vermicompost, bone meal and ground rock
phosphate. These liquid and carrier based bioformulation of individual and consortial (consortia of
two, three and four) strains were used to study their effect on growth promotion of apple plants
planted in three replant sites viz., Maggota, Sharontha and Siao .The performance of apple plants was
much better in terms of establishment, increase in plant height, number of nodes, chlorophyll content
of leaves and available NPK content of rhizosphere soil over untreated control after three years of
treatment. These selected genotypically and phenotypically characterized strains of Pseudomonas sp.
which were found to be potent can have great importance in the field of agriculture, horticulture and
especially in the treatment of apple plants in replant problem area.
 
Date 2016-06-23T14:11:06Z
2016-06-23T14:11:06Z
2016
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67854
 
Language en
 
Format application/pdf