Abstract
In general, plants grown under diffuse light yield higher biomass than those grown under direct light as a result of a more uniform distribution of the light across the plant canopy. We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods. Lettuce grown under the light-diffusing film were smaller (up to 36%) than control plants grown under the clear film, due to the fewer leaves per plant (up to 22%) and lower mean values of individual leaf area (up to 29%). The photosynthetically active radiations use efficiency was sometimes lower (up to 23%) in lettuces grown under the light-diffusing film. The pigment contents tended to be lower in plants grown under the light-diffusing plastic. The total macroelement contents of the lettuces grown under the light-diffusing plastic were up to 10% higher than in the lettuces grown under clear plastic, mainly as a result of higher leaf K contents (up to 19% higher). In addition, use of the light-diffusing plastic tended to increase leaf nitrate contents (by up to 23%). The leaf solid soluble content and acidity values were higher in the lettuces grown under the light-diffusing plastic, while leaf pH values were lower than in the control plants. The findings showed that the light-diffusing plastic was detrimental to production of compact heads of lettuce, and to some quality parameters such as nitrate and pigment contents. Nevertheless, open-leaf cultivars would likely show a different response to the diffuse light.
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Claims 12
Claim · model-written summary
Lettuce under light-diffusing film was smaller, up to 36%, than control plants under clear film.
- Taxon
- lettuce
Lactuca sativae0 - Material
- Bataviae0
- Treatment
- light-diffusing filme1
- Outcome
- smallere1
- Direction
- smallere1
- Value
- up to 36%e1
- Comparator
- clear filme1
- Setting
- two greenhousese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e1“Lettuce grown under the light-diffusing film were smaller (up to 36%) than control plants grown under the clear film”
Claim · model-written summary
Lettuce under light-diffusing film had fewer leaves per plant, up to 22% fewer, than under clear film.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing filme1
- Outcome
- leaves per plante2
- Direction
- fewere2
- Value
- up to 22%e2
- Comparator
- clear filme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e1“Lettuce grown under the light-diffusing film were smaller (up to 36%) than control plants grown under the clear film”
e2“due to the fewer leaves per plant (up to 22%)”
Claim · model-written summary
Individual leaf area was lower, up to 29%, under light-diffusing film than under clear film.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing filme1
- Outcome
- individual leaf areae3
- Direction
- lowere3
- Value
- up to 29%e3
- Comparator
- clear filme1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e1“Lettuce grown under the light-diffusing film were smaller (up to 36%) than control plants grown under the clear film”
e3“lower mean values of individual leaf area (up to 29%)”
Claim · model-written summary
Photosynthetically active radiation use efficiency was sometimes lower, up to 23%, under light-diffusing film.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing filme4
- Outcome
- photosynthetically active radiations use efficiencye4
- Direction
- lowere4
- Value
- up to 23%e4
- Qualifier
- sometimese4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e4“The photosynthetically active radiations use efficiency was sometimes lower (up to 23%) in lettuces grown under the light-diffusing film”
Claim · model-written summary
Pigment contents tended to be lower in lettuce grown under light-diffusing plastic.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing plastice5
- Outcome
- pigment contentse5
- Direction
- lowere5
- Qualifier
- tendede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e5“The pigment contents tended to be lower in plants grown under the light-diffusing plastic”
Claim · model-written summary
Total macroelement contents in lettuce under light-diffusing plastic were up to 10% higher than under clear plastic.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing plastice6
- Outcome
- total macroelement contentse6
- Direction
- highere6
- Value
- up to 10%e6
- Comparator
- clear plastice6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e6“The total macroelement contents of the lettuces grown under the light-diffusing plastic were up to 10% higher than in the lettuces grown under clear plastic”
Claim · model-written summary
Leaf K contents were higher, up to 19%, under light-diffusing plastic.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing plastice6
- Outcome
- leaf K contentse7
- Direction
- highere7
- Value
- up to 19%e7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e6“The total macroelement contents of the lettuces grown under the light-diffusing plastic were up to 10% higher than in the lettuces grown under clear plastic”
e7“mainly as a result of higher leaf K contents (up to 19% higher)”
Claim · model-written summary
Leaf nitrate contents tended to increase, by up to 23%, under light-diffusing plastic.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- use of the light-diffusing plastice7
- Outcome
- leaf nitrate contentse7
- Direction
- increasee7
- Value
- by up to 23%e7
- Qualifier
- tendede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e7“use of the light-diffusing plastic tended to increase leaf nitrate contents (by up to 23%)”
Claim · model-written summary
Leaf solid soluble content and acidity values were higher in lettuce under light-diffusing plastic.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing plastice6
- Outcome
- leaf solid soluble content and acidity valuese6
- Direction
- highere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e6“The leaf solid soluble content and acidity values were higher in the lettuces grown under the light-diffusing plastic”
Claim · model-written summary
Leaf pH values were lower in lettuce under light-diffusing plastic than in control plants.
- Taxon
- lettuceLactuca sativae0
- Material
- Bataviae0
- Treatment
- light-diffusing plastice6
- Outcome
- leaf pH valuese7
- Direction
- lowere7
- Comparator
- control plantse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e6“The leaf solid soluble content and acidity values were higher in the lettuces grown under the light-diffusing plastic”
e7“while leaf pH values were lower than in the control plants”
Claim · model-written summary
Light-diffusing plastic was detrimental to production of compact lettuce heads.
- Taxon
- lettuceLactuca sativae6
- Treatment
- light-diffusing plastice6
- Outcome
- production of compact headse6
- Direction
- detrimentale6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e6“the light-diffusing plastic was detrimental to production of compact heads of lettuce”
Claim · model-written summary
Light-diffusing plastic was detrimental to some lettuce quality parameters, including nitrate and pigment contents.
- Taxon
- lettuceLactuca sativae6
- Treatment
- light-diffusing plastice6
- Outcome
- quality parameters such as nitrate and pigment contentse7
- Direction
- detrimentale6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We compared the effects of a light-diffusing plastic film and a clear plastic film on growth of Batavia lettuce (Lactuca sativa L.) in two greenhouses during five growth periods”
e6“the light-diffusing plastic was detrimental to production of compact heads of lettuce”
e7“and to some quality parameters such as nitrate and pigment contents”
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See all 300 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.