Abstract
This study was conducted to investigate the influence of various macro- and micronutrients on the growth and root yield of sweetpotato (variety IB/PH/03) grown in a Samoan Oxisol under semi-controlled screenhouse conditions. The following nutrient elements were considered: N, P, K, Mg, S, B, Cu, Fe, Mo, Mn, Ni, and Zn. The set-up involved pot nutrient omission trials wherein the twelve nutrient elements were combined to form an ALL treatment with subsequent 12 treatments made by excluding one nutrient consecutively from the ALL combinations. Treatments were arranged in a randomized complete block design with four replications for all treatments while six for the ALL treatment. Results showed that P was the most limiting factor to sweetpotato vegetative growth and root yield. Reduced storage root yield in relation to ALL were also observed when N, P, K, S, B, Fe, Mn, Mo and Ni were not supplied, although the difference was insignificant. Thus unless P deficiency is addressed, the deficiency effects of these nutrients on storage root yield remain insignificant.
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Claims 4
Claim · model-written summary
Phosphorus was the most limiting nutrient for sweetpotato vegetative growth.
- Taxon
- sweetpotato
_Flower.jpg?width=60)
Ipomoea batatase0 - Treatment
- Pe0
- Outcome
- vegetative growthe0
- Direction
- most limitinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“P was the most limiting factor to sweetpotato vegetative growth and root yield.”
Claim · model-written summary
Phosphorus was the most limiting nutrient for sweetpotato root yield.
- Taxon
- sweetpotatoIpomoea batatase0
- Treatment
- Pe0
- Outcome
- root yielde0
- Direction
- most limitinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“P was the most limiting factor to sweetpotato vegetative growth and root yield.”
Claim · model-written summary
Omitting N, P, K, S, B, Fe, Mn, Mo or Ni reduced storage-root yield relative to ALL, without a significant difference.
- Taxon
- sweetpotatoIpomoea batatase1
- Material
- IB/PH/03e1
- Treatment
- N, P, K, S, B, Fe, Mn, Mo and Ni were not suppliede0
- Outcome
- storage root yielde0
- Direction
- Reducede0
- Comparator
- ALLe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reduced storage root yield in relation to ALL were also observed when N, P, K, S, B, Fe, Mn, Mo and Ni were not supplied, although the difference was insignificant.”
e1“sweetpotato (variety IB/PH/03)”
Claim · model-written summary
The authors conclude that other nutrient deficiency effects on storage-root yield remain insignificant until P deficiency is addressed.
- Taxon
- sweetpotatoIpomoea batatase1
- Outcome
- P deficiency is addressede0
- Qualifier
- deficiency effects of these nutrients on storage root yield remain insignificante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“unless P deficiency is addressed, the deficiency effects of these nutrients on storage root yield remain insignificant.”
e1“sweetpotato (variety IB/PH/03)”
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