Abstract
This study was designed to identify the major factors that influence biological Nitrogen fixation and yield of groundnut in a savanna Alfisol through rhizobium inoculation, liming and fertilizer application on an acidic soil to optimize productivity. Treatments used were two levels each of lime, phosphorus, potassium and micronutrients. These were zero (0) and the recommended rates. Phosphorus was applied at 54 kg P2O5/ha, K at 25 kg K2O/ha, micronutrients (Agrolyzer) at 2 g/L and lime at 250 kg/ha. Treatments were arranged in factorial combinations and laid out in a randomized complete block design (RCBD) with three replications. The groundnut seeds were inoculated with rhizobial inoculant, NC 92. A non-nodulating genotype, ICGL 5 was included for estimation of biological nitrogen fixation. This study shows that acidity which is a constraint to groundnut production can be successfully managed through liming and fertilization. Liming resulted to higher groundnut yields. Rhizobium inoculation met the N requirement of groundnut. Also, positive N balance indicated improved soil quality and can be beneficial to non-fixing crops grown in rotation. Correlation showed that the nodule and root dry weights were positively related to shoot dry matter, biological nitrogen fixation and can influence the grain yield.
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Claims 8
Claim · model-written summary
Acidity constraints on groundnut production could be managed by liming and fertilization.
- Taxon
- groundnut
Arachis hypogaeae0 - Treatment
- liming and fertilizatione0
- Outcome
- managed through liming and fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“acidity which is a constraint to groundnut production can be successfully managed through liming and fertilization”
Claim · model-written summary
Liming increased groundnut yields.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- Liminge0
- Outcome
- groundnut yieldse0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Liming resulted to higher groundnut yields”
Claim · model-written summary
Rhizobium inoculation met the groundnut nitrogen requirement.
- Taxon
- groundnutArachis hypogaeae0
- Treatment
- Rhizobium inoculatione0
- Outcome
- N requirement of groundnute0
RhizobiumNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobium inoculation met the N requirement of groundnut”
Claim · model-written summary
Positive nitrogen balance indicated improved soil quality.
- Taxon
- groundnutArachis hypogaeat0
- Outcome
- positive N balancee0
- Qualifier
- improved soil qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“groundnut”
e0“positive N balance indicated improved soil quality”
Claim · model-written summary
The positive nitrogen balance may benefit non-fixing rotation crops.
- Taxon
- groundnutArachis hypogaeat0
- Outcome
- beneficial to non-fixing crops grown in rotatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“groundnut”
e0“positive N balance indicated improved soil quality and can be beneficial to non-fixing crops grown in rotation”
Claim · model-written summary
Nodule and root dry weights were positively related to shoot dry matter.
- Taxon
- groundnutArachis hypogaeat0
- Organ / stage
- nodule and roote0
- Outcome
- shoot dry mattere0
- Direction
- positively relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“groundnut”
e0“the nodule and root dry weights were positively related to shoot dry matter, biological nitrogen fixation”
Claim · model-written summary
Nodule and root dry weights were positively related to biological nitrogen fixation.
- Taxon
- groundnutArachis hypogaeat0
- Organ / stage
- nodule and roote0
- Outcome
- biological nitrogen fixatione0
- Direction
- positively relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“groundnut”
e0“the nodule and root dry weights were positively related to shoot dry matter, biological nitrogen fixation”
Claim · model-written summary
Nodule and root dry weights may influence grain yield.
- Taxon
- groundnutArachis hypogaeat0
- Organ / stage
- nodule and roote0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“groundnut”
e0“the nodule and root dry weights were positively related to shoot dry matter, biological nitrogen fixation and can influence the grain yield”
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