Paper · 2020 · Scientific Reports

Different organic manure sources and NPK fertilizer on soil chemical properties, growth, yield and quality of okra

Aruna Olasekan Adekiya; Wutem Sunny Ejue; Adeniyi Olayanju; et al.

19
claims
42
verbatim quotes
238
citations
2
research areas
✓
Open access · cc-by

Abstract

Abstract Use of organic manures to meet the nutrient requirement of crop would be an inevitable practice in the years to come for sustainable agriculture since organic manures generally improve the soil physical, chemical and biological properties. Hence, field experiments were carried out in 2017 and 2018 to compare the impact of different organic manures and NPK fertilizer on soil properties, growth, yield, proximate and mineral contents of okra ( Abelmoschus esculentus L.). The treatments each year 2017 and 2018 consisted of: rabbit manure, cow dung, poultry manure, green manure [Mexican sunflower ( Tithonia diversifolia Asteraceae)], pig manure, NPK 15-15-15 fertilizer applied at 120 kg N ha −1 and a control (no manure/inorganic fertilizer). The seven treatments were laid out in a randomized complete block design with three replication. Organic manures and NPK fertilizer increased the soil organic matter (OM), N, P, K, Ca and Mg (NPK fertilizer did not increase OM, Ca and Mg significantly), growth, yield, minerals, protein, ash, carbohydrate and mucilage contents of okra fruit as compared with control. Organic manures improved okra yield compared with NPK fertilizer. Okra growth and yield parameters were significantly higher in 2018 compared with 2017. Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017. Amongst various organic manures, poultry manure produced significantly higher plant growth, yield, mineral and proximate composition of okra because of its high soil chemical properties which could be related to its lowest C: N ratio, lignin and lignin: N ratio. Results also showed that okra grown during high intensity rainfall has higher yield but with reduced quality except its mucilage content. Therefore, planting of okra with poultry manure under moderate rainfall will enhance the health benefit from the fruit, however, those that desire its mucilage content planting during high rainfall is recommended.

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 19

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic manures and NPK fertilizer increased soil organic matter, N, P, K, Ca and Mg.

Treatment
Organic manures and NPK fertilizere0
Outcome
soil organic matter (OM), N, P, K, Ca and Mge0
Direction
increasede0
Comparator
controle1

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Organic manures and NPK fertilizer increased the soil organic matter (OM), N, P, K, Ca and Mg”

✓ located verbatim in the source · abstract, characters 853–946 · show in text ↑
e1

“growth, yield, minerals, protein, ash, carbohydrate and mucilage contents of okra fruit as compared with control”

✓ located verbatim in the source · abstract, characters 1010–1122 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

NPK fertilizer did not significantly increase soil OM, Ca and Mg.

Treatment
NPK fertilizere0
Outcome
OM, Ca and Mge0
Direction
did not increasee0

Not reportedComparator

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“NPK fertilizer did not increase OM, Ca and Mg significantly”

✓ located verbatim in the source · abstract, characters 948–1007 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic manures and NPK fertilizer increased okra growth and yield compared with control.

Treatment
Organic manures and NPK fertilizere0
Outcome
growth, yielde1
Direction
increasede0
Comparator
controle1

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Organic manures and NPK fertilizer increased the soil organic matter (OM), N, P, K, Ca and Mg”

✓ located verbatim in the source · abstract, characters 853–946 · show in text ↑
e1

“growth, yield, minerals, protein, ash, carbohydrate and mucilage contents of okra fruit as compared with control”

✓ located verbatim in the source · abstract, characters 1010–1122 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic manures and NPK fertilizer increased okra minerals, protein and ash contents compared with control.

Treatment
Organic manures and NPK fertilizere0
Outcome
minerals, protein, ashe1
Direction
increasede0
Comparator
controle1

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Organic manures and NPK fertilizer increased the soil organic matter (OM), N, P, K, Ca and Mg”

✓ located verbatim in the source · abstract, characters 853–946 · show in text ↑
e1

“growth, yield, minerals, protein, ash, carbohydrate and mucilage contents of okra fruit as compared with control”

✓ located verbatim in the source · abstract, characters 1010–1122 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic manures and NPK fertilizer increased okra carbohydrate and mucilage contents compared with control.

Treatment
Organic manures and NPK fertilizere0
Outcome
carbohydrate and mucilage contentse1
Direction
increasede0
Comparator
controle1

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Organic manures and NPK fertilizer increased the soil organic matter (OM), N, P, K, Ca and Mg”

✓ located verbatim in the source · abstract, characters 853–946 · show in text ↑
e1

“growth, yield, minerals, protein, ash, carbohydrate and mucilage contents of okra fruit as compared with control”

✓ located verbatim in the source · abstract, characters 1010–1122 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Organic manures improved okra yield compared with NPK fertilizer.

Treatment
Organic manurese2
Outcome
okra yielde2
Direction
improvede2
Comparator
NPK fertilizere2

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e2

“Organic manures improved okra yield compared with NPK fertilizer”

✓ located verbatim in the source · abstract, characters 1124–1188 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Okra growth and yield parameters were significantly higher in 2018 than in 2017.

Outcome
growth and yield parameterse3
Direction
highere3
Setting
2018e3

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e3

“Okra growth and yield parameters were significantly higher in 2018 compared with 2017”

✓ located verbatim in the source · abstract, characters 1190–1275 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Control pod yield of okra was 9.7% higher in 2018 than in 2017.

Treatment
Controle4
Outcome
pod yield of okrae4
Direction
increasede4
Value
9.7%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Rabbit manure pod yield of okra was 35.3% higher in 2018 than in 2017.

Treatment
rabbit manuree4
Outcome
pod yield of okrae4
Direction
increasede4
Value
35.3%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Cow dung pod yield of okra was 57.9% higher in 2018 than in 2017.

Treatment
cow dunge4
Outcome
pod yield of okrae4
Direction
increasede4
Value
57.9%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Poultry manure pod yield of okra was 36.2% higher in 2018 than in 2017.

Treatment
poultry manuree4
Outcome
pod yield of okrae4
Direction
increasede4
Value
36.2%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Green manure pod yield of okra was 39.2% higher in 2018 than in 2017.

Treatment
green manuree4
Outcome
pod yield of okrae4
Direction
increasede4
Value
39.2%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Pig manure pod yield of okra was 45.5% higher in 2018 than in 2017.

Treatment
pig manuree4
Outcome
pod yield of okrae4
Direction
increasede4
Value
45.5%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

NPK fertilizer pod yield of okra was 3.2% higher in 2018 than in 2017.

Treatment
NPK fertilizere4
Outcome
pod yield of okrae4
Direction
increasede4
Value
3.2%e4
Comparator
the same treatment in 2017e4
Setting
2018e4

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e4

“Control, rabbit manure, cow dung, poultry manure, green manure, pig manure and NPK fertilizer in 2018 increased the pod yield of okra by 9.7%, 35.3%, 57.9%, 36.2%, 39.2%, 45.5% and 3.2%, respectively compare with the same treatment in 2017”

✓ located verbatim in the source · abstract, characters 1277–1516 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Poultry manure produced significantly higher okra plant growth, yield, mineral and proximate composition than various organic manures.

Treatment
poultry manuree5
Outcome
plant growth, yield, mineral and proximate compositione5
Direction
highere5
Comparator
various organic manurese5

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e5

“Amongst various organic manures, poultry manure produced significantly higher plant growth, yield, mineral and proximate composition of okra”

✓ located verbatim in the source · abstract, characters 1518–1658 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

Okra grown during high intensity rainfall had higher yield.

Treatment
high intensity rainfalle6
Outcome
yielde6
Direction
highere6

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e6

“okra grown during high intensity rainfall has higher yield but with reduced quality except its mucilage content”

✓ located verbatim in the source · abstract, characters 1806–1917 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Associationobservedoriginal resultnegativemeasured

Claim · model-written summary

Okra grown during high intensity rainfall had reduced quality, except its mucilage content.

Treatment
high intensity rainfalle6
Outcome
qualitye6
Direction
reducede6
Qualifier
except its mucilage contente6

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e6

“okra grown during high intensity rainfall has higher yield but with reduced quality except its mucilage content”

✓ located verbatim in the source · abstract, characters 1806–1917 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Planting okra with poultry manure under moderate rainfall is recommended to enhance the health benefit from the fruit.

Outcome
planting of okra with poultry manure under moderate rainfalle7
Qualifier
will enhance the health benefit from the fruite7

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e7

“planting of okra with poultry manure under moderate rainfall will enhance the health benefit from the fruit”

✓ located verbatim in the source · abstract, characters 1930–2037 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Planting okra during high rainfall is recommended for those who desire its mucilage content.

Outcome
planting during high rainfalle7
Qualifier
those that desire its mucilage contente7

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

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e7

“those that desire its mucilage content planting during high rainfall is recommended”

✓ located verbatim in the source · abstract, characters 2048–2131 · show in text ↑
t0

“quality of okra”

✓ located verbatim in the source · title, characters 99–114 · show in text ↑

organic · nutrient: content · Abelmoschus esculentus (okra)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. positive
  2. negative
  3. positive

1 paper more in this group

See all 5 papers →

fertilization · quality: sugar starch · Abelmoschus esculentus (okra)Positive and negative results

14 papers: 13 positive, 1 negative or no effect

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

  1. no effect
  2. positive
  3. positive

10 papers more in this group

See all 14 papers →

fertilization · quality: protein · Abelmoschus esculentus (okra)Positive and negative results

17 papers: 15 positive, 2 negative or no effect

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

  1. no effect
  2. no effect
  3. positive

13 papers more in this group

See all 17 papers →

fertilization · nutrient: content · Abelmoschus esculentus (okra)Positive and negative results

67 papers: 62 positive, 5 negative or no effect

61 papers in the same direction as this paper · 5 in the opposite direction

  1. positive
  2. positive
  3. positive

63 papers more in this group

See all 67 papers →

fertilization · yield · Abelmoschus esculentus (okra)Positive and negative results

373 papers: 355 positive, 18 negative or no effect

354 papers in the same direction as this paper · 14 in the opposite direction · 4 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

369 papers more in this group

See all 373 papers →

organic · quality: sugar starch · Abelmoschus esculentus (okra)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

organic · quality: protein · Abelmoschus esculentus (okra)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

fertilization · quality: general · Abelmoschus esculentus (okra)Results agree

24 papers: 24 positive, 0 negative or no effect

23 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

20 papers more in this group

See all 24 papers →

8 of 9 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.