Abstract
This study was designed to assess the performance of plant growth promoting rhizobacteria (PGPR) containing ACC-deaminase for improving growth and yield of maize in the presence of organic fertilizer. Organic fertilizer was prepared by composting fruit and vegetable wastes in a locally-fabricated unit and enriched with N fertilizer applied @ 147 g kg -1 compost. This ‘organic fertilizer’ was used to formulate bio-fertilizers by using three PGPR strains containing ACC-deaminase, Pseudomonas putida biotype A (Q7), Pseudomonas fluorescens (Q14) and Pseudomonas fluorescens biotype G (N3), separately. The organic- and/or bio-fertilizers were applied to maize @ 300 kg ha -1 without/with 88 kg ha -1 urea-N in the field trials. A basal dose of P and K (100 and 50 kg ha -1 , respectively) was applied to all plots and also tested in the field trials in the absence of organic-/bio-fertilizer. Results of field study revealed that the organic fertilizer supplemented with 88 kg ha -1 N was equally effective to full dose of N-fertilizer (175 kg ha -1 ) in improving cob weight, fresh biomass and grain yield of maize. However, bio-fertilizer supplemented with 88 ha -1 N fertilizer significantly increased the growth and yield of maize over full dose of N-fertilizer and exhibited superiority over organic fertilizer. Organic-/bio-fertilizer application also significantly enhanced N, P and K uptakes. The Pseudomonas fluorescens biotype G (N3) containing biofertilizer was found best to increase grain yield and nutrient uptake both in the presence or absence of 88 kg N ha -1 . Results may imply that organic waste could be composted into value-added soil amendment by enriching/blending it with N and PGPR containing ACC-deaminase activity. This approach is based on using organic- or bio-fertilizers (N-enriched and inoculated compost) at lower rates (just 300 kg ha -1 ) instead of tons ha -1 of non-enriched composts. Moreover, this strategy could also be useful to protect our environments against threat posed by organic wastes.
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Claims 6
Claim · model-written summary
Organic fertilizer supplemented with 88 kg N per ha was equally effective as the full N fertilizer dose for maize cob weight, fresh biomass and grain yield.
- Treatment
- organic fertilizer supplemented with 88 kg ha -1 Ne1
- Outcome
- cob weight, fresh biomass and grain yielde1
- Direction
- equally effectivee1
- Comparator
- full dose of N-fertilizer (175 kg ha -1 )e1
- Setting
- field studye1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Results of field study revealed that the organic fertilizer supplemented with 88 kg ha -1 N was equally effective to full dose of N-fertilizer (175 kg ha -1 ) in improving cob weight, fresh biomass and grain yield of maize”
t0“Relative efficacy of Pseudomonas spp., containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer”
Claim · model-written summary
Bio-fertilizer supplemented with 88 kg N per ha significantly increased maize growth and yield over the full N fertilizer dose.
- Treatment
- bio-fertilizer supplemented with 88 ha -1 N fertilizere2
- Outcome
- growth and yielde2
- Direction
- increasede2
- Qualifier
- exhibited superiority over organic fertilizere2
- Comparator
- full dose of N-fertilizere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“However, bio-fertilizer supplemented with 88 ha -1 N fertilizer significantly increased the growth and yield of maize over full dose of N-fertilizer and exhibited superiority over organic fertilizer”
t0“Relative efficacy of Pseudomonas spp., containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer”
Claim · model-written summary
Organic- or bio-fertilizer application significantly enhanced maize N, P and K uptake.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Organic-/bio-fertilizer application also significantly enhanced N, P and K uptakes”
t0“Relative efficacy of Pseudomonas spp., containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer”
Claim · model-written summary
Pseudomonas fluorescens biotype G (N3) bio-fertilizer was best at increasing maize grain yield and nutrient uptake with or without 88 kg N per ha.
- Treatment
- Pseudomonas fluorescens biotype G (N3) containing biofertilizere4
- Interactor
- Pseudomonas fluorescens biotype G (N3)
.JPG?width=60)
Pseudomonas fluorescense4symbiont - Outcome
- grain yield and nutrient uptakee4
- Direction
- increasee4
- Qualifier
- both in the presence or absence of 88 kg N ha -1e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.JPG?width=500)
Verbatim
e4“The Pseudomonas fluorescens biotype G (N3) containing biofertilizer was found best to increase grain yield and nutrient uptake both in the presence or absence of 88 kg N ha -1”
t0“Relative efficacy of Pseudomonas spp., containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer”
Claim · model-written summary
Organic waste may be composted into a value-added soil amendment by enriching it with N and PGPR.
- Outcome
- value-added soil amendmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Results may imply that organic waste could be composted into value-added soil amendment by enriching/blending it with N and PGPR containing ACC-deaminase activity”
t0“Relative efficacy of Pseudomonas spp., containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer”
Claim · model-written summary
Organic- or bio-fertilizers (N-enriched and inoculated compost) should be used at lower rates, just 300 kg per ha, instead of tons per ha of non-enriched compost.
- Treatment
- organic- or bio-fertilizers (N-enriched and inoculated compost)e6
- Outcome
- lower rates (just 300 kg ha -1)e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“This approach is based on using organic- or bio-fertilizers (N-enriched and inoculated compost) at lower rates (just 300 kg ha -1) instead of tons ha -1 of non-enriched composts”
t0“Relative efficacy of Pseudomonas spp., containing ACC-deaminase for improving growth and yield of maize (Zea mays L.) in the presence of organic fertilizer”
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