Abstract
A field experiment was conducted on an Arenic paleudult in the rainforest zone of Southern Nigeria to determine the response of an improved variety of peanut (Arachis hypogea L. var. Samnut 23) to phosphorus, under different land preparation methods. Selected land preparation methods were “slash and burn” (SB) and “slash and mulch” (SM), and the phosphate fertilizer rates were 0, 30, 60, 90 and 120 kg P ha-1. The experiment was laid out as a randomized complete by block design. Each land preparation was divided into plots. Macro- and micro nutrient contents of peanut plants were determined, and the growth and yield components were also assessed. Results showed that the pre planting soil analysis for the SB management had a pH of 5.77, N (1.8 gkg-1), P (2.05 mgkg-1) and K (0.11cmol (+) kg-1), while that of the SM had a pH of 5.95, N (0.9 g kg-1), P (0.86 mg kg-1) and K (0.07cmol(+)kg-1). Plant height was not significantly different (pd” 0.05) in the land preparation methods, but leaf area was significantly different. However, plant height and leaf area responded better under the SB treatment with 90 kg P ha-1 rate of phosphorus fertilizer than the SM treatment under the same rate. Fresh pod weight of 908.6kg ha-1 and dry pod weight of 558.0kg ha-1 was obtained at 60 kg P ha-1 under the SB treatment and was significantly different from all other treatments including the SM. Significant differences were also observed in the nutrient concentrations of leaves and roots. Highest leaf phosphorus content (3.502 mg kg-1) was recorded at 90kg P ha-1 in the SM treatment while the highest nutrient content of P in the roots (0.272 mg kg-1) was recorded at 30 kg P ha-1 also in the SM treatment. However, the SB treatment recorded the highest peanut seed pods / shell at 60 kg P ha-1. Generally, phosphorus fertilization under the SB management practice gave better results than the SM management practice.Keywords: groundnut, land preparation, phosphorus fertilization, Slash and burn, slash and mulch [How to Cite: Joseph SO and RO Oyibo. 2014. Phosphorus Fertilization Under Different Land Preparation Methods and Performance of Groundnut (Arachis hypogea L.) in Rainforest Zone of Southern Nigeria. J Trop Soils 19(1): 1-7. Doi: 10.5400/jts.2014.19.1.1]
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Claims 14
Claim · model-written summary
Preplanting soil pH was 5.77 under slash and burn and 5.95 under slash and mulch.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pre planting soil analysis for the SB management had a pH of 5.77, N (1.8 gkg-1), P (2.05 mgkg-1) and K (0.11cmol (+) kg-1), while that of the SM had a pH of 5.95, N (0.9 g kg-1), P (0.86 mg kg-1) and K (0.07cmol(+)kg-1)”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Preplanting soil N was 1.8 gkg-1 under slash and burn versus 0.9 g kg-1 under slash and mulch.
- Taxon
- peanut
Arachis hypogaeae1 - Treatment
- SBe0
- Outcome
- Ne0
- Value
- 1.8 gkg-1e0
- Qualifier
- 0.9 g kg-1e0
- Comparator
- SMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pre planting soil analysis for the SB management had a pH of 5.77, N (1.8 gkg-1), P (2.05 mgkg-1) and K (0.11cmol (+) kg-1), while that of the SM had a pH of 5.95, N (0.9 g kg-1), P (0.86 mg kg-1) and K (0.07cmol(+)kg-1)”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Preplanting soil P was 2.05 mgkg-1 under slash and burn versus 0.86 mg kg-1 under slash and mulch.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- SBe0
- Outcome
- Pe0
- Value
- 2.05 mgkg-1e0
- Qualifier
- 0.86 mg kg-1e0
- Comparator
- SMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pre planting soil analysis for the SB management had a pH of 5.77, N (1.8 gkg-1), P (2.05 mgkg-1) and K (0.11cmol (+) kg-1), while that of the SM had a pH of 5.95, N (0.9 g kg-1), P (0.86 mg kg-1) and K (0.07cmol(+)kg-1)”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Preplanting soil K was 0.11cmol (+) kg-1 under slash and burn versus 0.07cmol(+)kg-1 under slash and mulch.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- SBe0
- Outcome
- Ke0
- Value
- 0.11cmol (+) kg-1e0
- Qualifier
- 0.07cmol(+)kg-1e0
- Comparator
- SMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the pre planting soil analysis for the SB management had a pH of 5.77, N (1.8 gkg-1), P (2.05 mgkg-1) and K (0.11cmol (+) kg-1), while that of the SM had a pH of 5.95, N (0.9 g kg-1), P (0.86 mg kg-1) and K (0.07cmol(+)kg-1)”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Plant height did not differ significantly between land preparation methods.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- land preparation methodse0
- Outcome
- Plant heighte0
- Direction
- not significantly differente0
- Comparator
- land preparation methodse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height was not significantly different (pd” 0.05) in the land preparation methods”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Leaf area differed significantly between land preparation methods.
- Taxon
- peanutArachis hypogaeae2
- Treatment
- land preparation methodse1
- Outcome
- leaf areae0
- Comparator
- land preparation methodse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf area was significantly different”
e1“in the land preparation methods”
e2“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
At 90 kg P ha-1, plant height and leaf area responded better under slash and burn than slash and mulch.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- SB treatment with 90 kg P ha-1 rate of phosphorus fertilizere0
- Outcome
- plant height and leaf areae0
- Direction
- bettere0
- Comparator
- SM treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height and leaf area responded better under the SB treatment with 90 kg P ha-1 rate of phosphorus fertilizer than the SM treatment under the same rate.”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Fresh pod weight was 908.6kg ha-1 at 60 kg P ha-1 under slash and burn, significantly different from other treatments.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- 60 kg P ha-1 under the SB treatmente0
- Outcome
- Fresh pod weighte0
- Value
- 908.6kg ha-1e0
- Comparator
- all other treatments including the SMe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh pod weight of 908.6kg ha-1 and dry pod weight of 558.0kg ha-1 was obtained at 60 kg P ha-1 under the SB treatment and was significantly different from all other treatments including the SM.”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Dry pod weight was 558.0kg ha-1 at 60 kg P ha-1 under slash and burn, significantly different from other treatments.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- 60 kg P ha-1 under the SB treatmente0
- Outcome
- dry pod weighte0
- Value
- 558.0kg ha-1e0
- Comparator
- all other treatments including the SMe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fresh pod weight of 908.6kg ha-1 and dry pod weight of 558.0kg ha-1 was obtained at 60 kg P ha-1 under the SB treatment and was significantly different from all other treatments including the SM.”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Leaf and root nutrient concentrations differed significantly among treatments.
- Taxon
- peanutArachis hypogaeae1
- Outcome
- nutrient concentrations of leaves and rootse0
Not reportedTreatmentComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant differences were also observed in the nutrient concentrations of leaves and roots.”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
The highest leaf phosphorus content was 3.502 mg kg-1 at 90kg P ha-1 under slash and mulch.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- 90kg P ha-1 in the SM treatmente0
- Outcome
- leaf phosphorus contente0
- Direction
- Higheste0
- Value
- 3.502 mg kg-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Highest leaf phosphorus content (3.502 mg kg-1) was recorded at 90kg P ha-1 in the SM treatment”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
The highest root phosphorus content was 0.272 mg kg-1 at 30 kg P ha-1 under slash and mulch.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- 30 kg P ha-1 also in the SM treatmente0
- Outcome
- nutrient content of P in the rootse0
- Direction
- higheste0
- Value
- 0.272 mg kg-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest nutrient content of P in the roots (0.272 mg kg-1) was recorded at 30 kg P ha-1 also in the SM treatment”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
Claim · model-written summary
Slash and burn had the highest peanut seed pods per shell at 60 kg P ha-1.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- SB treatmente0
- Outcome
- peanut seed pods / shelle0
- Direction
- higheste0
- Qualifier
- 60 kg P ha-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SB treatment recorded the highest peanut seed pods / shell at 60 kg P ha-1”
Claim · model-written summary
The authors conclude phosphorus fertilization under slash and burn generally gave better results than slash and mulch.
- Taxon
- peanutArachis hypogaeae1
- Outcome
- phosphorus fertilization under the SB management practicee0
- Direction
- bettere0
- Comparator
- SM management practicee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Generally, phosphorus fertilization under the SB management practice gave better results than the SM management practice.”
e1“peanut (Arachis hypogea L. var. Samnut 23)”
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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.