Paper · 2016 · Journal of Experimental Biology and Agricultural Sciences

Growth and yield response of sweet potato to different tillage methods and phosphorus fertilizer rates in Ghana

G. Dumbuya; J. Sarkodie-Addo; M. A. Daramy; et al.

4
claims
8
verbatim quotes
25
citations
1
research areas
✓
Open access

Abstract

A field experiment was conducted during the major cropping season of 2014 at the Plantation Section of the Department of Crop and Soil Sciences, Kwame Nkrumah University of Science and Technology, Ghana to evaluate the effect of tillage and different application rates of phosphorus fertilizer on the growth and yield of sweet potato variety Okumkom. The tillage methods are ridge & mound while the different rates of phosphorus fertilizers are 0, 30, 60, 90 and 120 kg P2O5/ha in triple superphosphate (46% P2O5) form. Factorial experiment was used and treatments were arranged in a Randomized Complete Block Design with three replications. All the treatments were supplemented by 30 kg N/ha in the form of Urea (46% N). Results of this study indicated that plant growth was not significantly affected by tillage, but root yield was affected significantly with ridging produced the highest root yield. Further, highest growth and yield was observed from the 60 kg P2O5/ha treatment.

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Claims 4

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Tillage did not significantly affect plant growth.

Taxon
sweet potatoIpomoea batatast0
Treatment
tillagee0
Outcome
plant growthe0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“plant growth was not significantly affected by tillage”

✓ located verbatim in the source · abstract, characters 759–813 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 29–41 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Ridging produced the highest root yield among tillage methods.

Taxon
sweet potatoIpomoea batatast0
Treatment
ridginge0
Outcome
root yielde0
Direction
higheste0
Setting
Ghanat0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“root yield was affected significantly with ridging produced the highest root yield”

✓ located verbatim in the source · abstract, characters 819–901 · show in text ↑
t0

“Growth and yield response of sweet potato to different tillage methods and phosphorus fertilizer rates in Ghana”

✓ located verbatim in the source · title, characters 0–111 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 60 kg P2O5/ha treatment produced the highest growth.

Taxon
sweet potatoIpomoea batatast0
Treatment
60 kg P2O5/ha treatmente0
Outcome
growthe0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“highest growth and yield was observed from the 60 kg P2O5/ha treatment”

✓ located verbatim in the source · abstract, characters 912–982 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 29–41 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The 60 kg P2O5/ha treatment produced the highest yield.

Taxon
sweet potatoIpomoea batatast0
Treatment
60 kg P2O5/ha treatmente0
Outcome
yielde0
Direction
higheste0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“highest growth and yield was observed from the 60 kg P2O5/ha treatment”

✓ located verbatim in the source · abstract, characters 912–982 · show in text ↑
t0

“sweet potato”

✓ located verbatim in the source · title, characters 29–41 · show in text ↑

tillage · growth · Ipomoea batatas (sweet potato)Positive and negative results

4 papers: 2 positive, 2 negative or no effect

1 paper in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. no effect
See all 4 papers →

phosphorus · growth · Ipomoea batatas (sweet potato)Positive and negative results

9 papers: 3 positive, 6 negative or no effect

2 papers in the same direction as this paper · 6 in the opposite direction

  1. negative
  2. positive
  3. negative

5 papers more in this group

See all 9 papers →

phosphorus · yield · Ipomoea batatas (sweet potato)Positive and negative results

23 papers: 19 positive, 4 negative or no effect

18 papers in the same direction as this paper · 4 in the opposite direction

  1. no effect
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

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.