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Cross-compatibility evaluation of plant growth promoting rhizobacteria of coconut and cocoa on yield and rhizosphere properties of vegetable crops.

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Title Cross-compatibility evaluation of plant growth promoting rhizobacteria of coconut and cocoa on yield and rhizosphere properties of vegetable crops.
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Creator Rajeela, T.H. K.
Murali Gopal
Alka Gupta
Bhat Ravi
Thomas George V
 
Subject Cocoa Coconut Cross-compatible PGPR Vegetables Vermicompost
 
Description Not Available
Plant growth promoting rhizobacteria (PGPR), Bacillus megaterium TSB16 isolated from coconut and
Pseudomonas putida KDSF23 from cocoa, were tested for cross-compatibility with vegetable crops in
combination with coconut leaf vermicompost (CLV). The treatments included CLV @10 t/ha (T1), B.
megaterium + CLV @ 6 kg /ha and 10 t/ha, respectively (T2), P. putida + CLV @ 6 kg /ha and 10 t/ha,
respectively (T3) and recommended dose of NPK fertilizers @75:40:25 kg N, P2O5, K2O + CLV @ 2.5 t/ha (T4).
The results of the field trial indicated that the cumulative yield of tomato was significantly higher (P < 0.05) with
chemical fertilizer application (278.7 g/plant) and Pseudomonas putida KDSF23+ CLV treatment (275.8 g/
plant) compared to that in CLV application (239.5 g/plant). The yield of chilli was significantly higher in the
plots that received chemical fertilizers. The soil N, P, K and organic carbon were highest in chemical fertilizer
applied plots. However, a significant increase in population of rhizosphere microbial communities, particularly
the plant-beneficial microbiota, and soil enzyme activities (phosphatase, dehydrogenase and urease) were
recorded in the PGPR and CLV treated plots. The function-specific microorganisms viz. fluorescent
pseudomonads, phosphate solubilizers, free-living nitrogen fixers and Trichoderma were 4.7–9.1, 3.5–3.8,
1.3–2.1 and 2.0–2.2 fold higher, respectively, in tomato and 1.5–1.6, 1.4–2.5, 1.3–1.4 and 2.9–3.4 fold higher,
respectively, in chilli, in PGPR treated plots than that received chemical fertilizer. Our findings suggest that the
PGPR strains isolated from the rhizosphere of coconut and cocoa can be utilized as a bioinoculant for vegetable
production in organic agricultural systems indicating cross-compatible nature. They can also serve as a single
bioinoculant for the main crop (coconut) and its intercrops (such as vegetables) in coconut based cropping
system to reduce inorganic fertilizer application.
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Date 2021-07-30T04:51:21Z
2021-07-30T04:51:21Z
2016-11-30
 
Type Research Paper
 
Identifier Rajeela, T.H. K., Murali Gopal, Alka Gupta, Bhat Ravi and Thomas George V. 2017. Cross-compatibility evaluation of plant growth promoting rhizobacteria of coconut and cocoa on yield and rhizosphere properties of vegetable crops. Biocatalysis and Agricultural Biotechnology. 9: 67–73.
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http://krishi.icar.gov.in/jspui/handle/123456789/51338
 
Language English
 
Relation Not Available;
 
Publisher Elsevier