Abstract
It has been suggested that the increase in CO2 levels in the coming decades will have positive consequences on the nutritional content and yield of agricultural crops. However, the effects of the increase in CO2 concentrations remain little known in Andean region. This study evaluated the effect of increased CO2 on the protein content and growth of sugar beet and lettuce plants in the Andean region of Colombia. We used a Randomized Complete Block Design, strip 1 was open field, strip 2 was low tunnel with ambient CO2 and strip 3 was low tunnel with 1000 ppm CO2. The sugar beet experiment three harvest periods were evaluated. The results indicated that CO2 fertilization did not have a significant effect on the yield and head diameter of the lettuce. However, biomass production tended to increase in the first sugar beet harvest but decreased significantly in the last two harvests, probably due to a negative effect caused by acclimatization to CO2 enrichment. The protein content was not affected by the increase in CO2 levels in any of the crops. The results suggest the increase in atmospheric CO2 in the next years will not cause any benefit in lettuce or sugar beet grown in the Andean region.
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Claims 8
Claim · model-written summary
CO2 fertilization did not significantly affect lettuce yield.
- Taxon
- lettuce
Lactuca sativae0 - Treatment
- CO2 fertilizatione0
- Outcome
- yielde0
- Setting
- Andean region of Colombiae1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO2 fertilization did not have a significant effect on the yield and head diameter of the lettuce”
e1“Andean region of Colombia”
Claim · model-written summary
CO2 fertilization did not significantly affect lettuce head diameter.
- Taxon
- lettuceLactuca sativae0
- Treatment
- CO2 fertilizatione0
- Outcome
- head diametere0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO2 fertilization did not have a significant effect on the yield and head diameter of the lettuce”
Claim · model-written summary
Sugar beet biomass tended to increase at the first harvest under CO2 fertilization.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarise0 - Treatment
- CO2 fertilizatione1
- Outcome
- biomass productione0
- Direction
- increasee0
- Qualifier
- first sugar beet harveste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“biomass production tended to increase in the first sugar beet harvest”
e1“CO2 fertilization”
Claim · model-written summary
Sugar beet biomass decreased significantly at the last two harvests under CO2 fertilization.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- CO2 fertilizatione2
- Outcome
- biomass productione3
- Direction
- decreasede0
- Qualifier
- last two harvestse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased significantly in the last two harvests”
e1“sugar beet harvest”
e2“CO2 fertilization”
e3“biomass production”
Claim · model-written summary
Elevated CO2 did not affect protein content in lettuce.
- Taxon
- lettuceLactuca sativae1
- Treatment
- increase in CO2 levelse0
- Outcome
- protein contente0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protein content was not affected by the increase in CO2 levels in any of the crops”
e1“lettuce plants”
Claim · model-written summary
Elevated CO2 did not affect protein content in sugar beet.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise1
- Treatment
- increase in CO2 levelse0
- Outcome
- protein contente0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The protein content was not affected by the increase in CO2 levels in any of the crops”
e1“growth of sugar beet and lettuce plants”
Claim · model-written summary
The authors concluded rising atmospheric CO2 would not benefit lettuce in the Andean region.
- Taxon
- lettuceLactuca sativae0
- Outcome
- not cause any benefite0
- Setting
- Andean regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in atmospheric CO2 in the next years will not cause any benefit in lettuce or sugar beet grown in the Andean region”
Claim · model-written summary
The authors concluded rising atmospheric CO2 would not benefit sugar beet in the Andean region.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Outcome
- not cause any benefite0
- Setting
- Andean regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the increase in atmospheric CO2 in the next years will not cause any benefit in lettuce or sugar beet grown in the Andean region”
The same questions in other papers
co2 · yield · Lactuca sativa (garden lettuce)Results differ
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5 papers in the same direction as this paper
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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.