Paper · 2017 · International Journal of Agronomy

Soil Amendments and Rotation Effects on Soybean and Maize Growths and Soil Chemical Changes in Northern Ghana

R. A. L. Kanton; S. S. J. Buah; A. Larbi; et al.

16
claims
24
verbatim quotes
8
citations
1
research areas
✓
Open access · cc-by

Abstract

A four-year field trial was conducted at Bonia in the Upper East Region of Ghana to evaluate soybean-maize rotation amendment systems. The treatments included soybean without amendment, inoculated soybean, inoculated soybean with fertisol, inoculated soybean with phosphorus and potassium (P, K), inoculated soybean with P, K and fertisol, inoculated soybean with nitrogen, phosphorus, and potassium (N, P, K), and continuous maize. Treatments were arranged in a randomized complete block design with four replications. Inoculation negatively affected yields by 2% and 14% in 2013 and 2015, respectively. Soil amendments with P, K or N, P, K increased yields within 45–51%, fertisol increased by 95%, and integration of P, K and fertisol recorded 76% increment of inoculated soybean. Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively. Maize after inoculated soybean with fertisol and maize after inoculated soybean with P, K and fertisol consistently scored higher benefit-cost ratio across the two years of experimentation. Thus, the two systems are conceivable for recommendation to the farmers in northern Ghana.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 16

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Soybean inoculation reduced yield by 2% in 2013.

Taxon
SoybeanGlycine maxt0
Treatment
Inoculatione0
Outcome
yieldse0
Direction
negatively affectede0
Value
2%e0
Qualifier
2013e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Inoculation negatively affected yields by 2% and 14% in 2013 and 2015, respectively”

✓ located verbatim in the source · abstract, characters 520–603 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 40–47 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Soybean inoculation reduced yield by 14% in 2015.

Taxon
SoybeanGlycine maxt0
Treatment
Inoculatione0
Outcome
yieldse0
Direction
negatively affectede0
Value
14%e0
Qualifier
2015e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Inoculation negatively affected yields by 2% and 14% in 2013 and 2015, respectively”

✓ located verbatim in the source · abstract, characters 520–603 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 40–47 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

P and K soil amendments raised soybean yields within 45–51%.

Taxon
SoybeanGlycine maxt0
Treatment
P, Ke0
Outcome
yieldse0
Direction
increasede0
Value
45–51%e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Soil amendments with P, K or N, P, K increased yields within 45–51%”

✓ located verbatim in the source · abstract, characters 605–672 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 40–47 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

N, P, K soil amendments raised soybean yields within 45–51%.

Taxon
SoybeanGlycine maxt0
Treatment
N, P, Ke0
Outcome
yieldse0
Direction
increasede0
Value
45–51%e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Soil amendments with P, K or N, P, K increased yields within 45–51%”

✓ located verbatim in the source · abstract, characters 605–672 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 40–47 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fertisol raised soybean yields by 95%.

Taxon
SoybeanGlycine maxt0
Treatment
fertisole0
Outcome
yieldse1
Direction
increasede0
Value
95%e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“fertisol increased by 95%”

✓ located verbatim in the source · abstract, characters 674–699 · show in text ↑
e1

“Soil amendments with P, K or N, P, K increased yields”

✓ located verbatim in the source · abstract, characters 605–658 · show in text ↑
t0

“Soybean”

✓ located verbatim in the source · title, characters 40–47 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combining P, K and fertisol increased inoculated soybean yield by 76%.

Taxon
soybeanGlycine maxe0
Treatment
P, K and fertisole0
Outcome
inoculated soybeane0
Direction
incremente0
Value
76%e0

Not reportedComparator

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“integration of P, K and fertisol recorded 76% increment of inoculated soybean”

✓ located verbatim in the source · abstract, characters 705–782 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize yield rose by 1% after inoculated soybean.

Taxon
maizeZea mayse0
Treatment
inoculated soybeane0
Outcome
Yields of maizee0
Direction
increasede0
Value
1%e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively”

✓ located verbatim in the source · abstract, characters 784–1054 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize yield rose by 20% after inoculated soybean with N, P, K.

Taxon
maizeZea mayse0
Treatment
inoculated soybean with N, P, Ke0
Outcome
Yields of maizee0
Direction
increasede0
Value
20%e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively”

✓ located verbatim in the source · abstract, characters 784–1054 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize yield rose by 25% after inoculated soybean with P, K.

Taxon
maizeZea mayse0
Treatment
inoculated soybean with P, Ke0
Outcome
Yields of maizee0
Direction
increasede0
Value
25%e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively”

✓ located verbatim in the source · abstract, characters 784–1054 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize yield rose by 43% after inoculated soybean with fertisol.

Taxon
maizeZea mayse0
Treatment
inoculated soybean with fertisole0
Outcome
Yields of maizee0
Direction
increasede0
Value
43%e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively”

✓ located verbatim in the source · abstract, characters 784–1054 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize yield rose by 44% after soybean without amendment.

Taxon
maizeZea mayse0
Treatment
soybean without amendmente0
Outcome
Yields of maizee0
Direction
increasede0
Value
44%e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively”

✓ located verbatim in the source · abstract, characters 784–1054 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize yield rose by 46% after inoculated soybean with P, K and fertisol.

Taxon
maizeZea mayse0
Treatment
inoculated soybean with P, K and fertisole0
Outcome
Yields of maizee0
Direction
increasede0
Value
46%e0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Yields of maize increased by 1%, 20%, 25%, 43%, 44%, and 46% under inoculated soybean, inoculated soybean with N, P, K, inoculated soybean with P, K, inoculated soybean with fertisol, soybean without amendment, and inoculated soybean with P, K and fertisol, respectively”

✓ located verbatim in the source · abstract, characters 784–1054 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize after inoculated soybean with fertisol had a higher benefit-cost ratio across both years.

Taxon
MaizeZea mayse0
Treatment
inoculated soybean with fertisole0
Outcome
benefit-cost ratioe0
Direction
highere0
Qualifier
across the two years of experimentatione0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Maize after inoculated soybean with fertisol and maize after inoculated soybean with P, K and fertisol consistently scored higher benefit-cost ratio across the two years of experimentation”

✓ located verbatim in the source · abstract, characters 1056–1244 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Maize after inoculated soybean with P, K and fertisol had a higher benefit-cost ratio across both years.

Taxon
MaizeZea mayse0
Treatment
inoculated soybean with P, K and fertisole0
Outcome
benefit-cost ratioe0
Direction
highere0
Qualifier
across the two years of experimentatione0

Not reportedComparator

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Maize after inoculated soybean with fertisol and maize after inoculated soybean with P, K and fertisol consistently scored higher benefit-cost ratio across the two years of experimentation”

✓ located verbatim in the source · abstract, characters 1056–1244 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend the maize after inoculated soybean with fertisol system to northern Ghana farmers.

Taxon
MaizeZea mayse1
Treatment
inoculated soybean with fertisole1
Outcome
recommendation to the farmers in northern Ghanae0
Setting
northern Ghanae0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Thus, the two systems are conceivable for recommendation to the farmers in northern Ghana”

✓ located verbatim in the source · abstract, characters 1246–1335 · show in text ↑
e1

“Maize after inoculated soybean with fertisol”

✓ located verbatim in the source · abstract, characters 1056–1100 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors recommend the maize after inoculated soybean with P, K and fertisol system to northern Ghana farmers.

Taxon
maizeZea mayse1
Treatment
inoculated soybean with P, K and fertisole1
Outcome
recommendation to the farmers in northern Ghanae0
Setting
northern Ghanae0

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Thus, the two systems are conceivable for recommendation to the farmers in northern Ghana”

✓ located verbatim in the source · abstract, characters 1246–1335 · show in text ↑
e1

“maize after inoculated soybean with P, K and fertisol”

✓ located verbatim in the source · abstract, characters 1105–1158 · show in text ↑

Glycine max · yield · Zea mays (maize)Positive and negative results

180 papers: 155 positive, 25 negative or no effect

154 papers in the same direction as this paper · 18 in the opposite direction · 7 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. negative

176 papers more in this group

See all 180 papers →

potassium · yield · Glycine max (soybean)Results differ

149 papers: 123 positive, 26 negative or no effect

122 papers in the same direction as this paper · 25 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. no effect

145 papers more in this group

See all 149 papers →

potassium · organism · Glycine max (soybean)Positive and negative results

5 papers: 4 positive, 1 negative or no effect

3 papers in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

phosphorus · organism · Glycine max (soybean)Positive and negative results

13 papers: 9 positive, 4 negative or no effect

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

  1. no effect
  2. no effect
  3. no effect

9 papers more in this group

See all 13 papers →

other · yield · Zea mays (maize)Positive and negative results

253 papers: 221 positive, 32 negative or no effect

220 papers in the same direction as this paper · 26 in the opposite direction · 6 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

249 papers more in this group

See all 253 papers →

potassium · yield · Zea mays (maize)Positive and negative results

320 papers: 291 positive, 29 negative or no effect

290 papers in the same direction as this paper · 28 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. no effect

316 papers more in this group

See all 320 papers →

phosphorus · yield · Glycine max (soybean)Positive and negative results

355 papers: 303 positive, 52 negative or no effect

302 papers in the same direction as this paper · 42 in the opposite direction · 10 reporting no difference from an alternative

  1. negative
  2. negative
  3. no effect

351 papers more in this group

See all 355 papers →

nitrogen · yield · Glycine max (soybean)Positive and negative results

416 papers: 318 positive, 98 negative or no effect

317 papers in the same direction as this paper · 91 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

412 papers more in this group

See all 416 papers →

8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.