Abstract
] Walp) plays a significant role in contributing to food security and agricultural sustainability in less developed countries like Ghana, Nigeria, Zambia and several others in sub-Saharan Africa. However, in Ghana the yield of cowpea is among the lowest in the world. This situation is attributed to the exposure of soil to wind and water erosion there by depleting macro-nutrients such as Nitrogen, Phosphorus and Potassium estimated 40-60 kg ha -1 per year, which is among the highest in Africa. To this end, field experiment was conducted to determine the growth and yield response of two cowpea varieties to application of nitrogen from organic and inorganic sources and rhizobia inoculant in semi deciduous forest vegetation zone of Ghana during the major rainy season of 2016. Poultry manure was applied as organic source, while urea was applied as inorganic source of nitrogen in single and combination of organic and inorganic. The experimental design used in the study was a 27 factorial arranged in RCBD with four replications. The maximum leaf area index (0.999), crop growth rate (11.89 g m -2 day -1 ) and grain yield (2005.50 kg ha -1 ) of cowpea varieties were obtained by combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1 . Therefore, the study revealed that combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha - 1 were significantly increased the growth, grain yield and yield components of cowpea varieties.
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Claims 4
Claim · model-written summary
Combined poultry manure and inorganic nitrogen gave the maximum leaf area index (0.999) in cowpea varieties.
- Taxon
- cowpea (Vigna anguiculata [L.] walp)
Vigna unguiculatat0 - Material
- two cowpea varietiese0
- Treatment
- combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1e1
- Outcome
- leaf area indexe1
- Direction
- maximume1
- Value
- 0.999e1
- Qualifier
- during the major rainy season of 2016e0
- Comparator
- singlee2
- Setting
- semi deciduous forest vegetation zone of Ghanae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea (Vigna anguiculata [L.] walp)”
e0“field experiment was conducted to determine the growth and yield response of two cowpea varieties to application of nitrogen from organic and inorganic sources and rhizobia inoculant in semi deciduous forest vegetation zone of Ghana during the major rainy season of 2016”
e1“The maximum leaf area index (0.999), crop growth rate (11.89 g m -2 day -1 ) and grain yield (2005.50 kg ha -1 ) of cowpea varieties were obtained by combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1”
e2“in single and combination of organic and inorganic”
Claim · model-written summary
Combined poultry manure and inorganic nitrogen gave the maximum crop growth rate (11.89 g m -2 day -1) in cowpea varieties.
- Taxon
- cowpea (Vigna anguiculata [L.] walp)Vigna unguiculatat0
- Material
- two cowpea varietiese0
- Treatment
- combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1e1
- Outcome
- crop growth ratee1
- Direction
- maximume1
- Value
- 11.89 g m -2 day -1e1
- Qualifier
- during the major rainy season of 2016e0
- Comparator
- singlee2
- Setting
- semi deciduous forest vegetation zone of Ghanae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea (Vigna anguiculata [L.] walp)”
e0“field experiment was conducted to determine the growth and yield response of two cowpea varieties to application of nitrogen from organic and inorganic sources and rhizobia inoculant in semi deciduous forest vegetation zone of Ghana during the major rainy season of 2016”
e1“The maximum leaf area index (0.999), crop growth rate (11.89 g m -2 day -1 ) and grain yield (2005.50 kg ha -1 ) of cowpea varieties were obtained by combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1”
e2“in single and combination of organic and inorganic”
Claim · model-written summary
Combined poultry manure and inorganic nitrogen gave the maximum grain yield (2005.50 kg ha -1) in cowpea varieties.
- Taxon
- cowpea (Vigna anguiculata [L.] walp)Vigna unguiculatat0
- Material
- two cowpea varietiese0
- Treatment
- combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1e1
- Outcome
- grain yielde1
- Direction
- maximume1
- Value
- 2005.50 kg ha -1e1
- Qualifier
- during the major rainy season of 2016e0
- Comparator
- singlee2
- Setting
- semi deciduous forest vegetation zone of Ghanae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea (Vigna anguiculata [L.] walp)”
e0“field experiment was conducted to determine the growth and yield response of two cowpea varieties to application of nitrogen from organic and inorganic sources and rhizobia inoculant in semi deciduous forest vegetation zone of Ghana during the major rainy season of 2016”
e1“The maximum leaf area index (0.999), crop growth rate (11.89 g m -2 day -1 ) and grain yield (2005.50 kg ha -1 ) of cowpea varieties were obtained by combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1”
e2“in single and combination of organic and inorganic”
Claim · model-written summary
Combined poultry manure and inorganic nitrogen significantly increased growth, grain yield and yield components of cowpea varieties.
- Taxon
- cowpea (Vigna anguiculata [L.] walp)Vigna unguiculatat0
- Material
- cowpea varietiese3
- Treatment
- combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha -1e3
- Outcome
- growth, grain yield and yield componentse3
- Direction
- increasede3
- Comparator
- singlee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cowpea (Vigna anguiculata [L.] walp)”
e2“in single and combination of organic and inorganic”
e3“Therefore, the study revealed that combined application of poultry manure at the rate of 1 ton ha -1 and inorganic nitrogen fertilizer at the rate of 10 kg N ha - 1 were significantly increased the growth, grain yield and yield components of cowpea varieties”
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