Abstract
The effect of applying saline water (2.5 dS·m -1 ) via a drip irrigation system at different growth stages of mulched or nonmulched bell peppers ( Capsicum annuum L. var. Red Knight) was investigated under greenhouse conditions. The study 6 × 2 factorial was arranged as a randomized complete-block design. The six irrigation treatments were: 1) control—nonsaline water throughout growth; 2) saline irrigation throughout growth; 3) saline irrigation from transplanting until formation of the first fruit set; 4) saline irrigation from transplanting until appearance of the first flower and from first harvest to final harvest; 5) saline irrigation from appearance of the first flower until first harvest; and 6) saline irrigation from fruit set until final harvest. A measurement of stomatal conductance (g s ), transpiration (E), and photosynthesis (A) rates was performed during vegetative growth, at flowering, at fruit set, and during fruit growth and development. Mulched plants had higher photosynthetic rates than nonmulched plants, although values were only significant for treatments 2, 3, 5, and 6. In addition, nonmulched plants were slower to recover after periods of saline irrigation than mulched plants. Mulched plants had significantly greater yields than nonmulched plants regardless of irrigation treatment. Saline irrigation when applied throughout growth or from fruit formation until harvest reduced marketable yields by 38% and 45% compared with the control plants.
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Claims 5
Claim · model-written summary
Mulched bell pepper plants had higher photosynthetic rates than nonmulched plants, significant only for some irrigation treatments.
- Taxon
- Capsicum annuum
Capsicum annuume0 - Material
- Red Knighte0
- Treatment
- Mulched plantse1
- Outcome
- photosynthetic ratese1
- Direction
- highere1
- Qualifier
- only significant for treatments 2, 3, 5, and 6e1
- Comparator
- nonmulched plantse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mulched or nonmulched bell peppers ( Capsicum annuum L. var. Red Knight)”
e1“Mulched plants had higher photosynthetic rates than nonmulched plants, although values were only significant for treatments 2, 3, 5, and 6”
Claim · model-written summary
Nonmulched bell pepper plants were slower to recover after saline irrigation than mulched plants.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- nonmulched plantse2
- Outcome
- recovere2
- Direction
- slowere2
- Comparator
- mulched plantse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mulched or nonmulched bell peppers ( Capsicum annuum L. var. Red Knight)”
e2“nonmulched plants were slower to recover after periods of saline irrigation than mulched plants”
Claim · model-written summary
Mulched bell pepper plants had significantly greater yields than nonmulched plants regardless of irrigation treatment.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- Mulched plantse3
- Outcome
- yieldse3
- Direction
- greatere3
- Qualifier
- regardless of irrigation treatmente3
- Comparator
- nonmulched plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mulched or nonmulched bell peppers ( Capsicum annuum L. var. Red Knight)”
e3“Mulched plants had significantly greater yields than nonmulched plants regardless of irrigation treatment”
Claim · model-written summary
Saline irrigation applied throughout growth reduced marketable yields by 38% compared with control plants.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- Saline irrigation when applied throughout growthe4
- Outcome
- marketable yieldse4
- Direction
- reducede4
- Value
- 38%e4
- Comparator
- control plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mulched or nonmulched bell peppers ( Capsicum annuum L. var. Red Knight)”
e4“Saline irrigation when applied throughout growth or from fruit formation until harvest reduced marketable yields by 38% and 45% compared with the control plants”
Claim · model-written summary
Saline irrigation applied from fruit formation until harvest reduced marketable yields by 45% compared with control plants.
- Taxon
- Capsicum annuumCapsicum annuume0
- Treatment
- from fruit formation until harveste4
- Outcome
- marketable yieldse4
- Direction
- reducede4
- Value
- 45%e4
- Comparator
- control plantse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mulched or nonmulched bell peppers ( Capsicum annuum L. var. Red Knight)”
e4“Saline irrigation when applied throughout growth or from fruit formation until harvest reduced marketable yields by 38% and 45% compared with the control plants”
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See all 6 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.