Abstract
The study was conducted in 2016 and 2017 cropping seasons at the research farm of Akwa Ibom State University, Obio Akpa, Nigeria to examine the effects of nutrient management, vine cutting time and variety on growth, yield and quality of sweetpotato. The experiment was laid out as split-split plot in a randomized complete block design with three replications. Results revealed that a combination of 2.5t/ha poultry manure + 200kg/ha NPK fertilizer or poultry manure alone significantly increased vine length, number of branches/plant, shoot dry matter and fresh shoot biomass compared to application of 400kg/ha inorganic NPK fertilizer alone and the no fertilizer application. The highest storage root yield and carotenoid content were obtained from combined application of 2.5t/ha poultry manure + 200kg/ha NPK fertilizer. A mixture of manure and fertilizer also significantly reduced decay of storage roots. No vine cutting significantly increased fresh shoot biomass but reduced carotenoid content compared to cutting at 16 or 17 WAP, while date of cutting had no effect on storage root yield. Sweetpotato variety white -fleshed TIS 87/0087 had significantly higher fresh shoot biomass and storage root yield than orange -fleshed Umuspo 3 but carotenoid content was higher in the latter than the former.
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Claims 9
Claim · model-written summary
Poultry manure plus NPK fertilizer increased vine length, branching, shoot dry matter and fresh shoot biomass versus NPK alone or no fertilizer.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase1 - Treatment
- 2.5t/ha poultry manure + 200kg/ha NPK fertilizere0
- Outcome
- vine length, number of branches/plant, shoot dry matter and fresh shoot biomasse0
- Direction
- increasede0
- Comparator
- 400kg/ha inorganic NPK fertilizer alone and the no fertilizer applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“a combination of 2.5t/ha poultry manure + 200kg/ha NPK fertilizer or poultry manure alone significantly increased vine length, number of branches/plant, shoot dry matter and fresh shoot biomass compared to application of 400kg/ha inorganic NPK fertilizer alone and the no fertilizer application.”
e1“sweetpotato”
Claim · model-written summary
Poultry manure alone increased vine length, branching, shoot dry matter and fresh shoot biomass versus NPK alone or no fertilizer.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- poultry manure alonee0
- Outcome
- vine length, number of branches/plant, shoot dry matter and fresh shoot biomasse0
- Direction
- increasede0
- Comparator
- 400kg/ha inorganic NPK fertilizer alone and the no fertilizer applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a combination of 2.5t/ha poultry manure + 200kg/ha NPK fertilizer or poultry manure alone significantly increased vine length, number of branches/plant, shoot dry matter and fresh shoot biomass compared to application of 400kg/ha inorganic NPK fertilizer alone and the no fertilizer application.”
e1“sweetpotato”
Claim · model-written summary
Combined poultry manure and NPK produced the highest storage root yield and carotenoid content.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- combined application of 2.5t/ha poultry manure + 200kg/ha NPK fertilizere0
- Outcome
- storage root yield and carotenoid contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The highest storage root yield and carotenoid content were obtained from combined application of 2.5t/ha poultry manure + 200kg/ha NPK fertilizer.”
e1“sweetpotato”
Claim · model-written summary
A manure and fertilizer mixture significantly reduced storage root decay.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- A mixture of manure and fertilizere0
- Outcome
- decay of storage rootse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A mixture of manure and fertilizer also significantly reduced decay of storage roots.”
e1“sweetpotato”
Claim · model-written summary
No vine cutting increased fresh shoot biomass relative to cutting at 16 or 17 WAP.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- No vine cuttinge0
- Outcome
- fresh shoot biomasse0
- Direction
- increasede0
- Comparator
- cutting at 16 or 17 WAPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No vine cutting significantly increased fresh shoot biomass but reduced carotenoid content compared to cutting at 16 or 17 WAP”
e1“sweetpotato”
Claim · model-written summary
No vine cutting reduced carotenoid content relative to cutting at 16 or 17 WAP.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- No vine cuttinge0
- Outcome
- carotenoid contente0
- Direction
- reducede0
- Comparator
- cutting at 16 or 17 WAPe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No vine cutting significantly increased fresh shoot biomass but reduced carotenoid content compared to cutting at 16 or 17 WAP”
e1“sweetpotato”
Claim · model-written summary
Cutting date had no effect on storage root yield.
- Taxon
- sweetpotatoIpomoea batatase1
- Treatment
- date of cuttinge0
- Outcome
- storage root yielde0
- Direction
- had no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“date of cutting had no effect on storage root yield”
e1“sweetpotato”
Claim · model-written summary
White fleshed TIS 87/0087 had higher fresh shoot biomass and storage root yield than orange fleshed Umuspo 3.
- Taxon
- SweetpotatoIpomoea batatase0
- Material
- white -fleshed TIS 87/0087e0
- Outcome
- fresh shoot biomass and storage root yielde0
- Direction
- highere0
- Comparator
- orange -fleshed Umuspo 3e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sweetpotato variety white -fleshed TIS 87/0087 had significantly higher fresh shoot biomass and storage root yield than orange -fleshed Umuspo 3”
Claim · model-written summary
Orange fleshed Umuspo 3 had higher carotenoid content than white fleshed TIS 87/0087.
- Taxon
- SweetpotatoIpomoea batatase1
- Material
- orange -fleshed Umuspo 3e1
- Outcome
- carotenoid contente0
- Direction
- highere0
- Comparator
- white -fleshed TIS 87/0087e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“carotenoid content was higher in the latter than the former.”
e1“Sweetpotato variety white -fleshed TIS 87/0087 had significantly higher fresh shoot biomass and storage root yield than orange -fleshed Umuspo 3”
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