Abstract
Field experiments were conducted at five sites to evaluate the effects of dual inoculation of alfalfa (Medicago sativa L.) with Sinorhizobium meliloti and Penicillium bilaii, a phosphorus-solubilizing fungus, on the yield and quality of alfalfa hay. Dual inoculation with S. meliloti strain NRG-34 and P. bilaii strain PB-50 increased nodule number and occupancy, but resulted in only small increases in hay yield and total nitrogen and phosphorus concentrations of hay compared with inoculation with S. meliloti alone. There was little response of alfalfa to phosphorus fertilizer at the sites, and this may partly explain the small effects of dual inoculation of the two microorganisms. There were no significant differences in nodulation, hay yield or hay nutrient concentrations between alfalfa inoculated with separate NRG-34 and PB-50 inoculant products and that inoculated with a co-cultured inoculant. This similarity in response supports use of a single effective delivery system for the two different rhizosphere microorganisms, which is of great practical relevance as producers are more likely to adopt technology that requires a single inoculation procedure than one requiring two separate inoculation procedures at planting time. Key words: Co-cultured inoculant, Medicago sativa, phosphorus-solubilizing microorganisms, Penicillium bilaii, Sinorhizobium meliloti
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Claims 8
Claim · model-written summary
Dual inoculation increased alfalfa nodule number and occupancy compared with S. meliloti alone.
- Taxon
- alfalfa
Medicago sativat0 - Treatment
- Dual inoculation with S. meliloti strain NRG-34 and P. bilaii strain PB-50e0
- Interactor
- S. meliloti strain NRG-34
Sinorhizobium melilotie0symbiont - Second interactor
- P. bilaii strain PB-50e0symbiont
- Outcome
- nodule number and occupancye0
- Direction
- increasede0
- Comparator
- inoculation with S. meliloti alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dual inoculation with S. meliloti strain NRG-34 and P. bilaii strain PB-50 increased nodule number and occupancy, but resulted in only small increases in hay yield and total nitrogen and phosphorus concentrations of hay compared with inoculation with S. meliloti alone.”
t0“alfalfa”
Claim · model-written summary
Dual inoculation caused only small increases in alfalfa hay yield.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- Dual inoculatione0
- Outcome
- hay yielde0
- Direction
- small increasese0
- Comparator
- inoculation with S. meliloti alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dual inoculation with S. meliloti strain NRG-34 and P. bilaii strain PB-50 increased nodule number and occupancy, but resulted in only small increases in hay yield and total nitrogen and phosphorus concentrations of hay compared with inoculation with S. meliloti alone”
t0“alfalfa”
Claim · model-written summary
Dual inoculation caused only small increases in hay nitrogen and phosphorus concentrations.
- Taxon
- alfalfaMedicago sativat0
- Treatment
- dual inoculationt0
- Outcome
- total nitrogen and phosphorus concentrations of haye0
- Direction
- small increasese0
- Comparator
- inoculation with S. meliloti alonee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only small increases in hay yield and total nitrogen and phosphorus concentrations of hay compared with inoculation with S. meliloti alone”
t0“dual inoculation of alfalfa”
Claim · model-written summary
Alfalfa showed little response to phosphorus fertilizer at the sites.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- phosphorus fertilizere0
- Outcome
- response of alfalfae0
- Direction
- little responsee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was little response of alfalfa to phosphorus fertilizer at the sites”
Claim · model-written summary
Separate versus co-cultured inoculants did not significantly differ in alfalfa nodulation.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- separate NRG-34 and PB-50 inoculant productse0
- Outcome
- nodulatione0
- Direction
- no significant differencese0
- Comparator
- a co-cultured inoculante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in nodulation, hay yield or hay nutrient concentrations between alfalfa inoculated with separate NRG-34 and PB-50 inoculant products and that inoculated with a co-cultured inoculant.”
Claim · model-written summary
Separate versus co-cultured inoculants did not significantly differ in alfalfa hay yield.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- separate NRG-34 and PB-50 inoculant productse0
- Outcome
- hay yielde0
- Direction
- no significant differencese0
- Comparator
- a co-cultured inoculante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in nodulation, hay yield or hay nutrient concentrations between alfalfa inoculated with separate NRG-34 and PB-50 inoculant products and that inoculated with a co-cultured inoculant.”
Claim · model-written summary
Separate versus co-cultured inoculants did not significantly differ in hay nutrient concentrations.
- Taxon
- alfalfaMedicago sativae0
- Treatment
- separate NRG-34 and PB-50 inoculant productse0
- Outcome
- hay nutrient concentrationse0
- Direction
- no significant differencese0
- Comparator
- a co-cultured inoculante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were no significant differences in nodulation, hay yield or hay nutrient concentrations between alfalfa inoculated with separate NRG-34 and PB-50 inoculant products and that inoculated with a co-cultured inoculant.”
Claim · model-written summary
The authors support using one delivery system for the two rhizosphere microorganisms.
- Taxon
- alfalfaMedicago sativat0
- Outcome
- use of a single effective delivery systeme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This similarity in response supports use of a single effective delivery system for the two different rhizosphere microorganisms”
t0“alfalfa”
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