Abstract
Abstract With the help of a field experiment, the influence of PGPR FZB42 (Bacillus amyloliquefaciens) seed dressing combined with a low (39 kg N/ha) and usual (79 kg N/ha) mineral nitrogen plant fertilisation on the cotton growth and yield was tested. The plant growth promoting rhizobacteria (PGPR) and the N-fertilisation alone promoted the plant growth, by the PGPR similar to the low N-fertilising. The cotton yield showed no significant difference between both treatments. The combined use of PGPR with different nitrogen plant fertilisation techniques resulted in the promotion of plant growth significantly compared to the mineral fertilising alone but differed significantly depending on the applied N-amount. The cotton yield in the combined application of PGPR and low N-amount increased by 75%. In combination with high N-fertilisation the yield increased by 30% compared to each of the N-fertilisation techniques. The effect was found to be based mainly on the PGPR growth promotion activity, resulting in larger plant root and stem–leaf system, increasing the possibilities to uptake available mineral nutrients. The great ecological value of the observed effectiveness improving influence by PGPR on the mineral plant fertilisation is discussed. Keywords: PGPR Bacillus amyloliquefaciens biofertilising effectcottonenhancing effectiveness mineral fertilising Acknowledgements The author thank Prof. Dr Christof Engels, Humboldt-University Berlin, Germany, Faculty of Agriculture and Horticulture, Dept. Crop and Animal Sciences, Division of Plant Nutrition and Fertlization, for the test plant nutrient analyses and critical help.
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Claims 6
Claim · model-written summary
PGPR alone promoted cotton growth similarly to low nitrogen fertilization.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- PGPRe0
- Interactor
- PGPRe0symbiont
- Outcome
- plant growthe0
- Direction
- promotede0
- Comparator
- low N-fertilisinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The plant growth promoting rhizobacteria (PGPR) and the N-fertilisation alone promoted the plant growth, by the PGPR similar to the low N-fertilising”
t0“cotton”
Claim · model-written summary
Cotton yield did not differ significantly between PGPR and low nitrogen treatments.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- PGPRt0
- Interactor
- PGPRt0symbiont
- Outcome
- cotton yielde0
- Direction
- no significant differencee0
- Comparator
- low N-fertilisingt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cotton yield showed no significant difference between both treatments”
t0“The plant growth promoting rhizobacteria (PGPR) and the N-fertilisation alone promoted the plant growth, by the PGPR similar to the low N-fertilising”
Claim · model-written summary
PGPR plus nitrogen significantly promoted cotton growth relative to nitrogen alone.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- combined use of PGPR with different nitrogen plant fertilisation techniquese0
- Interactor
- PGPRe0symbiont
- Outcome
- plant growthe0
- Direction
- promotione0
- Comparator
- mineral fertilising alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The combined use of PGPR with different nitrogen plant fertilisation techniques resulted in the promotion of plant growth significantly compared to the mineral fertilising alone but differed significantly depending on the applied N-amount”
t0“cotton”
Claim · model-written summary
PGPR with low nitrogen raised cotton yield by 75%.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- combined application of PGPR and low N-amounte0
- Interactor
- PGPRe0symbiont
- Outcome
- cotton yielde0
- Direction
- increasede0
- Value
- 75%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The cotton yield in the combined application of PGPR and low N-amount increased by 75%”
Claim · model-written summary
PGPR with high nitrogen increased cotton yield by 30% versus nitrogen alone.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- high N-fertilisatione0
- Interactor
- PGPRt1symbiont
- Outcome
- yielde0
- Direction
- increasede0
- Value
- 30%e0
- Comparator
- N-fertilisation techniquese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In combination with high N-fertilisation the yield increased by 30% compared to each of the N-fertilisation techniques”
t0“cotton”
t1“PGPR”
Claim · model-written summary
The authors attribute increased nutrient uptake to PGPR-promoted root and shoot growth.
- Taxon
- cottonGossypium hirsutumt0
- Interactor
- PGPRe0symbiont
- Outcome
- possibilities to uptake available mineral nutrientse0
- Qualifier
- larger plant root and stem–leaf systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect was found to be based mainly on the PGPR growth promotion activity, resulting in larger plant root and stem–leaf system, increasing the possibilities to uptake available mineral nutrients”
t0“cotton”
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