Abstract
Inoculating groundnut and cowpea with highly effective and competitive rhizobial strain improves nodulation. A field experiment was carried out at the experimental field of the Faculty of Agriculture, University for Development Studies, Nyankpala, to evaluate the growth and yield responses of cowpea and groundnut to five rhizobial inoculant strains in the Guinea Savanna zone. The experiment was laid out in a randomized complete block design (RCBD) with eight (8) treatments replicated four (4) times. The treatments included five rhizobial inoculant strains (NC 92, KNUST 1002, KNUST 1003, KNUST 1006, and BR 3267), two N fertilizer levels (20 kg·N/ha and 40 kg·N/ha), and a control. The results showed that rhizobial inoculation and N fertilizer application increased nodulation, biomass yield, pod number, pod weight, hundred seed weight, nodule dry weight, and pod yield of groundnut compared with the control. Rhizobial inoculation averagely increased the nodulation and yield by 63 and 67%, respectively, compared with the control. Mineral N fertilizer (20 kg N/ha) on average increased the nodulation and yield by 24 and 25%, respectively, compared with the control plots. It can be recommended from this study that, in the absence of highly competitive rhizobial strains such as KNUST 1006 and NC 92 as biofertilizers for increasing the nodulation and yield of cowpea and groundnut, 20 kg·N/ha can be used for the purpose. Further research is recommended using these rhizobial strains in combination with lower rates of N fertilizers (<20 kg·ha−1).
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Claims 8
Claim · model-written summary
Rhizobial inoculation increased nodulation and biomass yield and pod number of groundnut compared with the control.
- Taxon
- groundnut
Arachis hypogaeae1 - Treatment
- rhizobial inoculatione1
- Interactor
- rhizobiale1symbiont
- Outcome
- nodulation, biomass yield, pod numbere1
- Direction
- increasede1
- Comparator
- controle1
- Setting
- Guinea Savanna Zone of Ghanat1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rhizobial inoculation and N fertilizer application increased nodulation, biomass yield, pod number, pod weight, hundred seed weight, nodule dry weight, and pod yield of groundnut compared with the control”
t1“in the Guinea Savanna Zone of Ghana”
Claim · model-written summary
Rhizobial inoculation increased pod weight, hundred seed weight and nodule dry weight of groundnut compared with the control.
- Taxon
- groundnutArachis hypogaeae1
- Treatment
- rhizobial inoculatione1
- Interactor
- rhizobiale1symbiont
- Outcome
- pod weight, hundred seed weight, nodule dry weighte1
- Direction
- increasede1
- Comparator
- controle1
- Setting
- Guinea Savanna Zone of Ghanat1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rhizobial inoculation and N fertilizer application increased nodulation, biomass yield, pod number, pod weight, hundred seed weight, nodule dry weight, and pod yield of groundnut compared with the control”
t1“in the Guinea Savanna Zone of Ghana”
Claim · model-written summary
Rhizobial inoculation increased pod yield of groundnut compared with the control.
- Taxon
- groundnutArachis hypogaeae1
- Treatment
- rhizobial inoculatione1
- Interactor
- rhizobiale1symbiont
- Outcome
- pod yielde1
- Direction
- increasede1
- Comparator
- controle1
- Setting
- Guinea Savanna Zone of Ghanat1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“rhizobial inoculation and N fertilizer application increased nodulation, biomass yield, pod number, pod weight, hundred seed weight, nodule dry weight, and pod yield of groundnut compared with the control”
t1“in the Guinea Savanna Zone of Ghana”
Claim · model-written summary
Rhizobial inoculation increased nodulation of cowpea and groundnut by 63% on average compared with the control.
- Taxon
- cowpea and groundnutArachis hypogaea
Vigna unguiculatat0 - Treatment
- Rhizobial inoculatione2
- Interactor
- rhizobiale2symbiont
- Outcome
- nodulatione2
- Direction
- increasede2
- Value
- 63e2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Rhizobial inoculation averagely increased the nodulation and yield by 63 and 67%, respectively, compared with the control”
t0“Growth and Yield Responses of Cowpea and Groundnut”
Claim · model-written summary
Rhizobial inoculation increased yield of cowpea and groundnut by 67% on average compared with the control.
- Taxon
- cowpea and groundnutArachis hypogaeaVigna unguiculatat0
- Treatment
- Rhizobial inoculatione2
- Interactor
- rhizobiale2symbiont
- Outcome
- yielde2
- Direction
- increasede2
- Value
- 67%e2
- Comparator
- controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Rhizobial inoculation averagely increased the nodulation and yield by 63 and 67%, respectively, compared with the control”
t0“Growth and Yield Responses of Cowpea and Groundnut”
Claim · model-written summary
Mineral N fertilizer at 20 kg N/ha increased nodulation of cowpea and groundnut by 24% on average compared with the control plots.
- Taxon
- cowpea and groundnutArachis hypogaeaVigna unguiculatat0
- Treatment
- Mineral N fertilizer (20 kg N/ha)e3
- Outcome
- nodulatione3
- Direction
- increasede3
- Value
- 24e3
- Comparator
- control plotse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Mineral N fertilizer (20 kg N/ha) on average increased the nodulation and yield by 24 and 25%, respectively, compared with the control plots”
t0“Growth and Yield Responses of Cowpea and Groundnut”
Claim · model-written summary
Mineral N fertilizer at 20 kg N/ha increased yield of cowpea and groundnut by 25% on average compared with the control plots.
- Taxon
- cowpea and groundnutArachis hypogaeaVigna unguiculatat0
- Treatment
- Mineral N fertilizer (20 kg N/ha)e3
- Outcome
- yielde3
- Direction
- increasede3
- Value
- 25%e3
- Comparator
- control plotse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Mineral N fertilizer (20 kg N/ha) on average increased the nodulation and yield by 24 and 25%, respectively, compared with the control plots”
t0“Growth and Yield Responses of Cowpea and Groundnut”
Claim · model-written summary
Where competitive rhizobial strains are absent, 20 kg N/ha can be used for cowpea and groundnut as a substitute for biofertilizers.
- Taxon
- cowpea and groundnutArachis hypogaeaVigna unguiculatat0
- Outcome
- 20 kg·N/ha can be used for the purposee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“in the absence of highly competitive rhizobial strains such as KNUST 1006 and NC 92 as biofertilizers for increasing the nodulation and yield of cowpea and groundnut, 20 kg·N/ha can be used for the purpose”
t0“Growth and Yield Responses of Cowpea and Groundnut”
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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.