Paper · 2025 · Annals of tropical research/Annals of tropical research (Visayas State University-Online)

Performance of soybean varieties (Glycine max L.) treated with different plant extracts

Olalekan Joseph Olasan; Nkwam Ngbada; Celestine Aguoru; et al.

8
claims
16
verbatim quotes
1
citations
2
research areas
✓
Open access · cc-by-nc-nd

Abstract

Production of soybean has been low among the farmers over the years despite the use of synthetic yield enhancers and chemicals that control the pests and diseases of the crop. Some improved varieties have been developed. The study evaluated the performance of three soybean varieties (Glycine max L.) treated with different plant extracts (Cymbopogon citratus DC Stapf, Hyptis suaveolens (L.) Poit and Centrosema pubescens Benth). The soybean varieties (TGX-1951-3F, TGX-2019-2E and TGX-1987-62F) were evaluated in a randomized complete block design, in a field experiment. Data were collected on growth, yield, entomological and pathological parameters. Results showed that application of C. pubescens among other treatments improved plant performance at 40 and 60 days after planting. The treatments reduced white fly and ant pests as well as the incidence of mildew disease. Yield parameters (pod sizes, pod weight, and seed sizes) were not significantly affected by plant extracts. Observed differences in pod sizes were due to varietal effects (F=5.38, p<0.05). Combined treatments had effects on the TGX-1987-62F variety by producing the lowest number of infested seeds, thus suggesting their relevance in crop protection but subject to further trials. The best performing variety was TGX-2019-2Etreated with C. pubescens plant extract. The findings of this study may be useful in the sustainable production of soybean.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. 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 8

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

C. pubescens improved soybean performance at 40 and 60 days after planting.

Taxon
soybeanGlycine maxt0
Treatment
application of C. pubescense0
Outcome
plant performancee0
Direction
improvede0
Qualifier
40 and 60 days after plantinge0

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

“application of C. pubescens among other treatments improved plant performance at 40 and 60 days after planting.”

✓ located verbatim in the source · abstract, characters 675–786 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatments reduced white fly pests.

Taxon
soybeanGlycine maxt0
Treatment
The treatmentse0
Interactor
white flye0pest
Outcome
white flye0
Direction
reducede0

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

“The treatments reduced white fly and ant pests as well as the incidence of mildew disease.”

✓ located verbatim in the source · abstract, characters 787–877 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatments reduced ant pests.

Taxon
soybeanGlycine maxt0
Treatment
The treatmentse0
Interactor
ante0pest
Outcome
ant pestse0
Direction
reducede0

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

“The treatments reduced white fly and ant pests as well as the incidence of mildew disease.”

✓ located verbatim in the source · abstract, characters 787–877 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The treatments reduced mildew incidence.

Taxon
soybeanGlycine maxt0
Treatment
The treatmentse0
Interactor
mildewe0pathogen
Outcome
incidence of mildew diseasee0
Direction
reducede0

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

“The treatments reduced white fly and ant pests as well as the incidence of mildew disease.”

✓ located verbatim in the source · abstract, characters 787–877 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Extracts did not significantly affect pod sizes, pod weight, or seed sizes.

Taxon
soybeanGlycine maxt0
Treatment
plant extractse0
Outcome
pod sizes, pod weight, and seed sizese0

Not reportedComparatorDirection

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Yield parameters (pod sizes, pod weight, and seed sizes) were not significantly affected by plant extracts.”

✓ located verbatim in the source · abstract, characters 878–985 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Variety significantly affected pod size.

Taxon
soybeanGlycine maxt0
Material
varietale0
Outcome
pod sizese0
Qualifier
F=5.38, p<0.05e0

Not reportedDirection

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“Observed differences in pod sizes were due to varietal effects (F=5.38, p<0.05).”

✓ located verbatim in the source · abstract, characters 986–1066 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined treatments gave TGX-1987-62F the lowest number of infested seeds.

Taxon
soybeanGlycine maxt0
Material
TGX-1987-62Fe0
Treatment
Combined treatmentse0
Outcome
number of infested seedse0
Direction
loweste0

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

“Combined treatments had effects on the TGX-1987-62F variety by producing the lowest number of infested seeds”

✓ located verbatim in the source · abstract, characters 1067–1175 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

TGX-2019-2E treated with C. pubescens was the best-performing variety.

Taxon
soybeanGlycine maxt0
Material
TGX-2019-2Ee0
Treatment
C. pubescens plant extracte0
Outcome
best performing varietye0

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

Glycine max
Glycine max · TaxonPublic domain · Wikimedia Commons ↗

Verbatim

e0

“The best performing variety was TGX-2019-2Etreated with C. pubescens plant extract.”

✓ located verbatim in the source · abstract, characters 1259–1342 · show in text ↑
t0

“soybean”

✓ located verbatim in the source · title, characters 15–22 · show in text ↑

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

55 papers: 46 positive, 9 negative or no effect

8 papers in the same direction as this paper · 46 in the opposite direction

  1. positive
  2. positive
  3. positive

51 papers more in this group

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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.