Paper · 2019 · Greener Journal of Soil Science and Plant Nutrition

Effect of some organic, inorganic and foliar fertilizers on the growth of cocoa (Theobroma cacao L.) seedlings raised in soils of contrasting characteristics

Alfred Arthur; Solomon Acquaye; Dogbatse Jerome Agbesi

6
claims
12
verbatim quotes
1
citations
2
research areas
✓
Open access · cc-by

Abstract

The establishment of cocoa farms has been popular with the use of nursed seedlings in polybags. Availability of fertile topsoil for nursing cocoa seedlings is becoming limited and poor seedling growth of cocoa in the nurseries has been ascribed to the use of unsuitable potting media. A search for an alternative means of raising healthy seedlings at the nursery that will accelerate seedling growth is what this trial investigates. The experiment was laid out in 2 x 5 factorial arranged in Completely Randomized Design with four replications. Two soils, ‘Black soil’ obtained from a refuse dump and topsoil of Wacri series, collected from an old cocoa farm were used. Five fertilizer sources, control, inorganic, organic and two foliar fertilizers were used. Seedlings were raised from mixed hybrid cocoa and assessed at bi-weekly intervals for 14 weeks for growth. Initial soil analyses showed that the Black soil was relatively fertile compared to the Wacri series. Percent seedling emergence was initially higher with the unfertilized soil than the fertilized. Dry matter yields of roots and leaves were significantly (p<0.05) affected by the fertilizer. Application of fertilizers had no significant (p>0.05) effect on stem dry matter yield. Finally, seedlings from the Black soil which had higher initial fertility status performed better than those of Wacri series. With the different fertilizers on the growth performance and dry matter production, foliar fertilizer treatments performed better compared with the organic and inorganic fertilizers. From the experiment, it is concluded that the well decomposed Black soil from the refuse dump remains the best medium for the nursery work, but in the absence of this medium, less fertile topsoil could be used for raising cocoa seedlings and the growth boosted with foliar fertilizers.

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 6

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Seedling emergence of cocoa was higher with unfertilized soil than with fertilized soil.

Treatment
fertilizede1
Outcome
Percent seedling emergencee1
Direction
highere1
Comparator
unfertilized soile1

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

Theobroma cacao
Theobroma cacao · TaxonLuisovalles · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

t0

“growth of cocoa (Theobroma cacao L.) seedlings”

✓ located verbatim in the source · title, characters 64–110 · show in text ↑
e1

“Percent seedling emergence was initially higher with the unfertilized soil than the fertilized”

✓ located verbatim in the source · abstract, characters 970–1064 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Fertilizer significantly affected dry matter yield of cocoa roots and leaves.

Treatment
the fertilizere1
Outcome
Dry matter yields of roots and leavese1

Not reportedComparatorDirection

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

Theobroma cacao
Theobroma cacao · TaxonLuisovalles · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

t0

“growth of cocoa (Theobroma cacao L.) seedlings”

✓ located verbatim in the source · title, characters 64–110 · show in text ↑
e1

“Dry matter yields of roots and leaves were significantly (p<0.05) affected by the fertilizer”

✓ located verbatim in the source · abstract, characters 1066–1158 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Fertilizer application had no significant effect on cocoa stem dry matter yield.

Treatment
Application of fertilizerse1
Outcome
stem dry matter yielde1
Direction
no significante1

Not reportedComparator

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

Theobroma cacao
Theobroma cacao · TaxonLuisovalles · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

t0

“growth of cocoa (Theobroma cacao L.) seedlings”

✓ located verbatim in the source · title, characters 64–110 · show in text ↑
e1

“Application of fertilizers had no significant (p>0.05) effect on stem dry matter yield”

✓ located verbatim in the source · abstract, characters 1160–1246 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cocoa seedlings grown in Black soil performed better than those grown in Wacri series soil.

Treatment
Black soile1
Outcome
performed bettere1
Direction
bettere1
Qualifier
higher initial fertility statuse1
Comparator
Wacri seriese1

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

Theobroma cacao
Theobroma cacao · TaxonLuisovalles · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

t0

“growth of cocoa (Theobroma cacao L.) seedlings”

✓ located verbatim in the source · title, characters 64–110 · show in text ↑
e1

“seedlings from the Black soil which had higher initial fertility status performed better than those of Wacri series”

✓ located verbatim in the source · abstract, characters 1257–1372 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Foliar fertilizer treatments performed better than organic and inorganic fertilizers for cocoa growth performance and dry matter production.

Treatment
foliar fertilizer treatmentse1
Outcome
growth performance and dry matter productione1
Direction
performed bettere1
Comparator
the organic and inorganic fertilizerse1

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

Theobroma cacao
Theobroma cacao · TaxonLuisovalles · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

t0

“growth of cocoa (Theobroma cacao L.) seedlings”

✓ located verbatim in the source · title, characters 64–110 · show in text ↑
e1

“With the different fertilizers on the growth performance and dry matter production, foliar fertilizer treatments performed better compared with the organic and inorganic fertilizers”

✓ located verbatim in the source · abstract, characters 1374–1555 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The well decomposed Black soil from the refuse dump is the best medium for cocoa nursery work.

Outcome
best medium for the nursery worke1

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

Theobroma cacao
Theobroma cacao · TaxonLuisovalles · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

t0

“growth of cocoa (Theobroma cacao L.) seedlings”

✓ located verbatim in the source · title, characters 64–110 · show in text ↑
e1

“the well decomposed Black soil from the refuse dump remains the best medium for the nursery work”

✓ located verbatim in the source · abstract, characters 1599–1695 · show in text ↑

fertilization · yield · Theobroma cacao (cocoa)Positive and negative results

42 papers: 36 positive, 6 negative or no effect

35 papers in the same direction as this paper · 3 in the opposite direction · 3 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

38 papers more in this group

See all 42 papers →

fertilization · growth · Theobroma cacao (cocoa)Positive and negative results

74 papers: 62 positive, 12 negative or no effect

11 papers in the same direction as this paper · 62 in the opposite direction

  1. positive
  2. positive
  3. positive

70 papers more in this group

See all 74 papers →

application · yield · Theobroma cacao (cocoa)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 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.