Abstract
Low concentrations of P and organic manure in savanna soils limit cowpea response to rhizobia. The study was conducted to determine the combined effect of P and organic manure on cowpea response to rhizobia in a factorial experiment arranged in randomized complete block design with three replications on smallholder farmers’ fields in northern Ghana in 2015. The factors were two levels of Bradyrhizobium inoculant, two levels of P fertilizer, three treatments of manure (fertisoil, cattle manure, and no manure). Addition of Bradyrhizobium inoculant to P and fertisoil significantly increased shoot biomass yield from 1677 kg ha−1 in the plots without Bradyrhizobium inoculation to 1913 kg ha−1. Likewise, the addition of Bradyrhizobium inoculant to P and cattle manure significantly increased shoot biomass from 1437 kg ha−1 to 1813 kg ha−1. Grain yield increases of 1427 and 1278 kg ha−1 were obtained over the control when either fertisoil or cattle manure and P, respectively, were added to Bradyrhizobium inoculant. The value cost ratio for adding Bradyrhizobium inoculant to phosphorus and fertisoil was two indicating that it could be attractive to risk-averse smallholder farmers. The study demonstrated the potential of the combined application of organic matter and P to improve cowpea response to Bradyrhizobium inoculation.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Adding Bradyrhizobium inoculant to P and fertisoil increased cowpea shoot biomass yield from 1677 to 1913 kg ha−1.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- Addition of Bradyrhizobium inoculant to P and fertisoile0
- Interactor
- Bradyrhizobium
Bradyrhizobiume0symbiont - Outcome
- shoot biomass yielde0
- Direction
- increasede0
- Value
- 1913 kg ha−1e0
- Qualifier
- 1677 kg ha−1e0
- Comparator
- plots without Bradyrhizobium inoculatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of Bradyrhizobium inoculant to P and fertisoil significantly increased shoot biomass yield from 1677 kg ha−1 in the plots without Bradyrhizobium inoculation to 1913 kg ha−1.”
t0“cowpea”
Claim · model-written summary
Adding Bradyrhizobium inoculant to P and cattle manure increased cowpea shoot biomass from 1437 to 1813 kg ha−1.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- addition of Bradyrhizobium inoculant to P and cattle manuree0
- Interactor
- BradyrhizobiumBradyrhizobiume0symbiont
- Outcome
- shoot biomasse0
- Direction
- increasede0
- Value
- 1813 kg ha−1e0
- Qualifier
- 1437 kg ha−1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Likewise, the addition of Bradyrhizobium inoculant to P and cattle manure significantly increased shoot biomass from 1437 kg ha−1 to 1813 kg ha−1.”
t0“cowpea”
Claim · model-written summary
Fertisoil and P added to Bradyrhizobium inoculant increased cowpea grain yield by 1427 kg ha−1 over control.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- fertisoil or cattle manure and Pe0
- Interactor
- BradyrhizobiumBradyrhizobiume0symbiont
- Outcome
- Grain yielde0
- Direction
- increasese0
- Value
- 1427e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increases of 1427 and 1278 kg ha−1 were obtained over the control when either fertisoil or cattle manure and P, respectively, were added to Bradyrhizobium inoculant.”
t0“cowpea”
Claim · model-written summary
Cattle manure and P added to Bradyrhizobium inoculant increased cowpea grain yield by 1278 kg ha−1 over control.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- cattle manure and Pe0
- Interactor
- BradyrhizobiumBradyrhizobiume0symbiont
- Outcome
- Grain yielde0
- Direction
- increasese0
- Value
- 1278 kg ha−1e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Grain yield increases of 1427 and 1278 kg ha−1 were obtained over the control when either fertisoil or cattle manure and P, respectively, were added to Bradyrhizobium inoculant.”
t0“cowpea”
Claim · model-written summary
The value cost ratio for adding Bradyrhizobium inoculant to phosphorus and fertisoil was two.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- adding Bradyrhizobium inoculant to phosphorus and fertisoile0
- Interactor
- BradyrhizobiumBradyrhizobiume0symbiont
- Outcome
- value cost ratioe0
- Value
- twoe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The value cost ratio for adding Bradyrhizobium inoculant to phosphorus and fertisoil was two indicating that it could be attractive to risk-averse smallholder farmers.”
t0“cowpea”
Claim · model-written summary
The combined application could be attractive to risk-averse smallholder farmers.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- adding Bradyrhizobium inoculant to phosphorus and fertisoile0
- Outcome
- attractive to risk-averse smallholder farmerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The value cost ratio for adding Bradyrhizobium inoculant to phosphorus and fertisoil was two indicating that it could be attractive to risk-averse smallholder farmers.”
t0“cowpea”
The same questions in other papers
Bradyrhizobium · yield · Vigna unguiculata (cowpea)Results differ
10 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
10 papers more in this group
See all 14 papers →Bradyrhizobium · growth · Vigna unguiculata (cowpea)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- negative
- no effect
- positive
4 papers more in this group
See all 8 papers →inoculation · yield · Vigna unguiculata (cowpea)Results differ
98 papers in the same direction as this paper · 16 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
112 papers more in this group
See all 116 papers →inoculation · growth · Vigna unguiculata (cowpea)Positive and negative results
91 papers in the same direction as this paper · 8 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- positive
98 papers more in this group
See all 102 papers →fertilization · growth · Vigna unguiculata (cowpea)Positive and negative results
130 papers in the same direction as this paper · 10 in the opposite direction · 2 reporting no difference from an alternative
- positive
- positive
- no effect
139 papers more in this group
See all 143 papers →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.