Abstract
SummaryThe yield of tomato, Lycopersicon esculentum Mill. cv. Dombito, was compared under both supplemental high pressure sodium (HPS) lighting and natural greenhouse light conditions. HPS light (100 μ moles m−2s−1) was supplied over 18 hours daily (0400 to 2200 hours). All comparisons were made under single truss cropping conditions. A strong positive correlation (r=0.947) was observed between the total yield and total photosynthetic photon flux (PPF) received in the period from anthesis to harvest. Total PPF in the seedling stage (emergence to anthesis) was strongly correlated (r=−0.867) with timing of anthesis. Furthermore, changes in the leaf area ratio (LAR), specific leaf weight (SLW) and the relative growth rate (RGR) indicated that HPS lighting increased the rate of tomato seedling development without altering the basic pattern of development. The relationships, identified in this study, defining crop timing and crop yield represent the basis of a planning model that can be used for crop simulation and economic evaluation of the single truss system.
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Claims 5
Claim · model-written summary
Total yield correlated positively with photosynthetic photon flux received from anthesis to harvest (r=0.947).
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- total photosynthetic photon flux (PPF)e0
- Outcome
- total yielde0
- Direction
- positive correlatione0
- Value
- r=0.947e0
- Qualifier
- from anthesis to harveste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A strong positive correlation (r=0.947) was observed between the total yield and total photosynthetic photon flux (PPF) received in the period from anthesis to harvest”
t0“tomato”
Claim · model-written summary
Seedling-stage total PPF correlated negatively with timing of anthesis (r=−0.867).
- Taxon
- tomatoSolanum lycopersicumt0
- Organ / stage
- seedling stagee0
- Treatment
- Total PPFe0
- Outcome
- timing of anthesise0
- Direction
- decreaseinferrede0
- Value
- r=−0.867e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total PPF in the seedling stage (emergence to anthesis) was strongly correlated (r=−0.867) with timing of anthesis”
t0“tomato”
Claim · model-written summary
HPS lighting increased tomato seedling development rate without changing its basic pattern.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- HPS lightinge0
- Outcome
- rate of tomato seedling developmente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HPS lighting increased the rate of tomato seedling development without altering the basic pattern of development”
Claim · model-written summary
HPS lighting did not alter the basic pattern of tomato seedling development.
- Taxon
- tomatoSolanum lycopersicume0
- Treatment
- HPS lightinge0
- Outcome
- basic pattern of developmente0
- Direction
- without alteringe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HPS lighting increased the rate of tomato seedling development without altering the basic pattern of development”
Claim · model-written summary
The identified crop timing and yield relationships provide a basis for a planning model for single-truss tomato systems.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- basis of a planning modele0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relationships, identified in this study, defining crop timing and crop yield represent the basis of a planning model that can be used for crop simulation and economic evaluation of the single truss system”
t0“tomato”
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