Paper · 2025 · Egyptian Journal of Agricultural Research

Impact of deficit irrigation on sweet pepper (Capsicum annuum var. Simbard) performance: Assessing growth, yield, and water use efficiency under a four-day interval irrigation

Ransford O. Darko; Prince C. Wadie; Emmanuel Afutu; et al.

11
claims
22
verbatim quotes
0
citations
2
research areas
✓
Open access · cc-by-nc-sa

Abstract

This study investigated the effects of a four-day irrigation interval at varying levels (100%, 90%, 80%, and 70% of crop evapotranspiration, ETc) on the growth, yield, and water use efficiency (WUE) of sweet pepper in Coastal Savannah zone of Ghana. The study employed a randomized complete block design (RCBD) involving four treatments and three replications to assess plant height, leaf area, fruit number, fruit weight, and WUE across two growing seasons. The findings indicated that 100% ETc produced the greatest growth and productivity, achieving a WUE of 1.3 kg/m³. 90% ETc sustained elevated yields and WUE, indicating that little water stress can improve water utilization without significant yield reductions. Conversely, 70% ETc markedly decreased growth, yield and WUE, highlighting sweet pepper’s vulnerability to water stress, particularly during flowering and fruit maturation. Seasonal variations influenced performance, yielding superior outcomes in the initial season owing to advantageous climatic conditions. The research highlights the significance of stage-specific irrigation, especially during the mid-season when water requirements are at their highest. It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield, hence providing essential recommendations for farmers and policymakers on effective water management.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-sa. 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 11

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Full ETc irrigation produced greatest growth and productivity.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
100% ETce0
Outcome
growth and productivitye0
Direction
greateste0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“100% ETc produced the greatest growth and productivity”

✓ located verbatim in the source · abstract, characters 487–541 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Full ETc irrigation achieved water-use efficiency of 1.3 kg/m³.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
100% ETce0
Outcome
WUEe0
Value
1.3 kg/m³e0

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“100% ETc produced the greatest growth and productivity, achieving a WUE of 1.3 kg/m³.”

✓ located verbatim in the source · abstract, characters 487–572 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 90% ETc, yields remained elevated.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
90% ETce0
Outcome
yieldse0
Direction
elevatede0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“90% ETc sustained elevated yields and WUE”

✓ located verbatim in the source · abstract, characters 573–614 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 90% ETc, water-use efficiency remained elevated.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
90% ETce0
Outcome
WUEe0
Direction
elevatede0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“90% ETc sustained elevated yields and WUE”

✓ located verbatim in the source · abstract, characters 573–614 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Intervention effectauthor interpretationoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The authors report no significant yield reduction under modest water stress.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
little water stresse0
Outcome
yield reductionse0
Direction
without significant yield reductionse0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“little water stress can improve water utilization without significant yield reductions.”

✓ located verbatim in the source · abstract, characters 632–719 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 70% ETc, growth decreased markedly.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
70% ETce0
Outcome
growthe0
Direction
decreasede0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“70% ETc markedly decreased growth, yield and WUE”

✓ located verbatim in the source · abstract, characters 732–780 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 70% ETc, yield decreased markedly.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
70% ETce0
Outcome
yielde0
Direction
decreasede0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“70% ETc markedly decreased growth, yield and WUE”

✓ located verbatim in the source · abstract, characters 732–780 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

At 70% ETc, water-use efficiency decreased markedly.

Taxon
sweet pepperCapsicum annuume0e1
Treatment
70% ETce0
Outcome
WUEe0
Direction
decreasede0

Not reportedComparator

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“70% ETc markedly decreased growth, yield and WUE”

✓ located verbatim in the source · abstract, characters 732–780 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Associationobservedoriginal resultpositivemeasured

Claim · model-written summary

The initial season had superior performance, attributed to climate.

Taxon
sweet pepperCapsicum annuume0e1
Outcome
performancee0
Direction
superiore0
Qualifier
advantageous climatic conditionse0
Setting
initial seasone0

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Seasonal variations influenced performance, yielding superior outcomes in the initial season owing to advantageous climatic conditions.”

✓ located verbatim in the source · abstract, characters 893–1028 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The authors identify mid-season as the period with highest water requirements.

Taxon
sweet pepperCapsicum annuume0e1
Organ / stage
mid-seasone0
Outcome
water requirementse0
Direction
higheste0

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“during the mid-season when water requirements are at their highest.”

✓ located verbatim in the source · abstract, characters 1111–1178 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

The authors advocate 90% ETc irrigation for sustainable sweet pepper cultivation.

Taxon
sweet pepperCapsicum annuume0e1
Outcome
90% ETce0
Setting
arid placese0

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

Capsicum annuum
Capsicum annuum · TaxonBilljones94 · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑
e1

“It advocates for 90% ETc to provide sustainable sweet pepper cultivation in arid places, optimizing water conservation and yield”

✓ located verbatim in the source · abstract, characters 1179–1307 · show in text ↑

drought · yield · Capsicum annuum (sweet pepper)Results differ

11 papers: 3 positive, 8 negative or no effect

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

  1. positive
  2. positive
  3. positive

7 papers more in this group

See all 11 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.