Abstract
Field experiments were carried out during the 2000 and 2001 rainy seasons on the field of National Horticultural Research Institute at Bagauda (latitude 11o 33’ N and longitude 8o 23’E of the equator). The experiment was aimed at evaluating the response of roselle cultivars to different levels of N in combination with 50 kg P/ha and establishing anoptimum N fertilizer requirement by roselle. Five rates of nitrogen (0, 30, 60, 90 and 120 kg N ha-1) were combined with deep red and pure white cultivars of roselle in a randomized complete block design arrangement with three replications. Application of N significantly (p < 0.05) increased plant height, number of leaves, branches, pods, calyx and seed yieldso roselle. Application of 50 kg P/ha as basal dressing significantly (p < 0.05) influenced the production of calyces among the cultivars. In Nothern Guinea savanna, calyx yield of 2.38 t/ha fresh weight with a corresponding dry matter of 1.02 t/ha were significantly different (p < 0.05) when 30 kg N/ha was applied to deep red cultivar and second season (2001) was better than the first season (2000). Similarly, significantly differences (p
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Claims 5
Claim · model-written summary
Nitrogen application significantly increased roselle plant height, leaf, branch and pod numbers, and calyx and seed yields.
- Taxon
- roselle
Hibiscus sabdariffae0 - Treatment
- Application of Ne0
- Outcome
- plant height, number of leaves, branches, pods, calyx and seed yieldso rosellee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of N significantly (p < 0.05) increased plant height, number of leaves, branches, pods, calyx and seed yieldso roselle.”
Claim · model-written summary
Basal phosphorus application significantly affected calyx production among roselle cultivars.
- Taxon
- roselleHibiscus sabdariffat0
- Treatment
- 50 kg P/ha as basal dressinge0
- Outcome
- production of calycese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of 50 kg P/ha as basal dressing significantly (p < 0.05) influenced the production of calyces among the cultivars.”
t0“roselle”
Claim · model-written summary
At 30 kg N/ha, deep red roselle produced 2.38 t/ha fresh calyx yield in the Northern Guinea savanna.
- Taxon
- roselleHibiscus sabdariffat0
- Material
- deep red cultivare0
- Treatment
- 30 kg N/hae0
- Outcome
- calyx yielde0
- Value
- 2.38 t/ha fresh weighte0
- Setting
- Nothern Guinea savannae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In Nothern Guinea savanna, calyx yield of 2.38 t/ha fresh weight with a corresponding dry matter of 1.02 t/ha were significantly different (p < 0.05) when 30 kg N/ha was applied to deep red cultivar”
t0“roselle”
Claim · model-written summary
At 30 kg N/ha, deep red roselle had corresponding calyx dry matter of 1.02 t/ha.
- Taxon
- roselleHibiscus sabdariffat0
- Material
- deep red cultivare0
- Treatment
- 30 kg N/hae0
- Outcome
- dry mattere0
- Value
- 1.02 t/hae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“calyx yield of 2.38 t/ha fresh weight with a corresponding dry matter of 1.02 t/ha were significantly different (p < 0.05) when 30 kg N/ha was applied to deep red cultivar”
t0“roselle”
Claim · model-written summary
The 2001 roselle growing season performed better than 2000.
- Taxon
- roselleHibiscus sabdariffat0
- Outcome
- bettere0
- Direction
- bettere0
- Comparator
- first season (2000)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“second season (2001) was better than the first season (2000)”
t0“roselle”
The same questions in other papers
nitrogen · growth · Hibiscus sabdariffa (roselle)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
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.