Abstract
AbstractIn the present study, two phosphate-solubilizing bacteria Pantoea cypripedii and Pseudomonas plecoglossicida isolated from an organic field were tested for their efficacy to solubilize rock phosphate (RP) and other plant growth-promoting activities such as nitrogen fixation and the production of indole acetic acid (IAA) and siderophores. Both of the bacteria effectively solubilized RP and released significant amount of phosphorous (up to 271 µg P ml–1) in the culture medium. These isolates produced IAA and siderophores and failed to fix nitrogen as determined by acetylene reduction. Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP. Field trials for both crops were conducted in a completely randomized block design consisting of six treatments and each treatment with triplicates. Significant increase in growth parameters, grain yield, total P uptake, and soil fertility in context of organic carbon, available P, total P, and enzyme activities were observed in inoculation treatments along with RP fertilization compared with control. This study suggested that P. cypripedii and P. plecoglossicida along with RP play an important role in improving crop productivity in organic farming.Keywords: phosphate-solubilizing bacteriaPantoea cypripediiPseudomonas plecoglossicidaorganic farming AcknowledgmentsThe authors are thankful to University Grants Commission (UGC), Government of India for financial assistance and TIFAC-CORE for providing facilities.
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Claims 6
Claim · model-written summary
Both bacteria solubilized rock phosphate and released significant amounts of phosphorus in culture, up to 271.
- Taxon
- maize and wheat
Triticum aestivum
Zea mayse2 - Interactor
- Pantoea cypripediiPantoea cypripediie4symbiont
- Second interactor
- Pseudomonas plecoglossicidaPseudomonas plecoglossicidae4symbiont
- Outcome
- released significant amount of phosphorouse0
- Value
- up to 271e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP”
e0“Both of the bacteria effectively solubilized RP and released significant amount of phosphorous (up to 271 µg P ml–1) in the culture medium”
e4“two phosphate-solubilizing bacteria Pantoea cypripedii and Pseudomonas plecoglossicida isolated from an organic field”
Claim · model-written summary
The bacteria produced indole acetic acid and siderophores.
- Taxon
- maize and wheatTriticum aestivumZea mayse2
- Interactor
- Pantoea cypripediiPantoea cypripediie4symbiont
- Second interactor
- Pseudomonas plecoglossicidaPseudomonas plecoglossicidae4symbiont
- Outcome
- IAA and siderophorese1
- Direction
- producede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP”
e1“These isolates produced IAA and siderophores and failed to fix nitrogen as determined by acetylene reduction”
e4“two phosphate-solubilizing bacteria Pantoea cypripedii and Pseudomonas plecoglossicida isolated from an organic field”
Claim · model-written summary
The bacteria failed to fix nitrogen as determined by acetylene reduction.
- Taxon
- maize and wheatTriticum aestivumZea mayse2
- Interactor
- Pantoea cypripediiPantoea cypripediie4symbiont
- Second interactor
- Pseudomonas plecoglossicidaPseudomonas plecoglossicidae4symbiont
- Outcome
- fix nitrogene1
- Direction
- failede1
- Qualifier
- as determined by acetylene reductione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP”
e1“These isolates produced IAA and siderophores and failed to fix nitrogen as determined by acetylene reduction”
e4“two phosphate-solubilizing bacteria Pantoea cypripedii and Pseudomonas plecoglossicida isolated from an organic field”
Claim · model-written summary
Inoculation with the bacteria along with rock phosphate significantly increased growth parameters, grain yield and total P uptake of maize and wheat compared with control.
- Taxon
- maize and wheatTriticum aestivumZea mayse2
- Treatment
- inoculation treatments along with RP fertilizatione3
- Interactor
- Pantoea cypripediiPantoea cypripediie4symbiont
- Second interactor
- Pseudomonas plecoglossicidaPseudomonas plecoglossicidae4symbiont
- Outcome
- growth parameters, grain yield, total P uptakee3
- Direction
- increasee3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP”
e3“Significant increase in growth parameters, grain yield, total P uptake, and soil fertility in context of organic carbon, available P, total P, and enzyme activities were observed in inoculation treatments along with RP fertilization compared with control”
e4“two phosphate-solubilizing bacteria Pantoea cypripedii and Pseudomonas plecoglossicida isolated from an organic field”
Claim · model-written summary
Inoculation with the bacteria along with rock phosphate significantly increased soil organic carbon, available P and total P compared with control.
- Taxon
- maize and wheatTriticum aestivumZea mayse2
- Treatment
- inoculation treatments along with RP fertilizatione3
- Outcome
- organic carbon, available P, total Pe3
- Direction
- increasee3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP”
e3“Significant increase in growth parameters, grain yield, total P uptake, and soil fertility in context of organic carbon, available P, total P, and enzyme activities were observed in inoculation treatments along with RP fertilization compared with control”
Claim · model-written summary
Inoculation with the bacteria along with rock phosphate significantly increased soil enzyme activities compared with control.
- Taxon
- maize and wheatTriticum aestivumZea mayse2
- Treatment
- inoculation treatments along with RP fertilizatione3
- Outcome
- enzyme activitiese3
- Direction
- increasee3
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Two-year field study was conducted to test the efficacy of these bacteria on the growth and yield of maize and wheat crops grown in organic farm with and without RP”
e3“Significant increase in growth parameters, grain yield, total P uptake, and soil fertility in context of organic carbon, available P, total P, and enzyme activities were observed in inoculation treatments along with RP fertilization compared with control”
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Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.