Abstract
) is highly sensitive to the quantity and timing of precipitation, so alterations in precipitation patterns that are predicted under climate change are likely to be a major challenge for maintaining coffee agroecosystems. We assessed cultivar selection as a potential component of more resilient coffee agroecosystems by evaluating water stress responses among five Arabica coffee cultivars (clonal hybrids H10 and H1 and seedling lines Catuai 44, Catuai, and Villa Sarchi) using a precipitation reduction experiment in the highlands of Tarrazú, Costa Rica. During the first harvest (eighteen months after planting), plants under the rainout treatment had 211 % greater total fruit weight and over 50 % greater biomass than under the control treatment, potentially due to protection from unusually high rainfall during this period of our experiment. At the second harvest (30 months after planting), after a year of more typical rainfall, plants under rainout still produced 66 % more fruit by weight than under control. The magnitude of the responses varied among cultivars where, at the first harvest, H10 and H1 had approximately 92 % and 81 % greater fruit production and 18 % and 22 % greater biomass, respectively, and at the second harvest H10 had 60 % more fruit production than the overall average. Thus, our findings suggest that the hybrid lines H10 and H1 are more resilient than the other cultivars to the stress of high soil moisture. Overall, our results indicate that stress due to higher than average rainfall could impair coffee plant growth and production, and that cultivar selection is likely to be an important tool for maintaining the viability of coffee production, and the resilience of global agroecosystems more generally, under climate change.
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Claims 11
Claim · model-written summary
Plants under the rainout treatment had 211% greater total fruit weight than under the control treatment.
- Treatment
- rainout treatmente0
- Outcome
- total fruit weighte0
- Direction
- greatere0
- Value
- 211 %e0
- Comparator
- control treatmente0
CoffeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e0“plants under the rainout treatment had 211 % greater total fruit weight and over 50 % greater biomass than under the control treatment”
e1“the highlands of Tarrazú, Costa Rica”
Claim · model-written summary
Plants under the rainout treatment had over 50% greater biomass than under the control treatment.
- Treatment
- rainout treatmente0
- Outcome
- biomasse0
- Direction
- greatere0
- Value
- over 50 %e0
- Comparator
- control treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e0“plants under the rainout treatment had 211 % greater total fruit weight and over 50 % greater biomass than under the control treatment”
Claim · model-written summary
At the second harvest, plants under rainout produced 66% more fruit by weight than under control.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e2“plants under rainout still produced 66 % more fruit by weight than under control”
Claim · model-written summary
At the first harvest, cultivar H10 had 92% greater fruit production.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e3“at the first harvest, H10 and H1 had approximately 92 % and 81 % greater fruit production and 18 % and 22 % greater biomass, respectively”
Claim · model-written summary
At the first harvest, cultivar H1 had 81% greater fruit production.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e3“at the first harvest, H10 and H1 had approximately 92 % and 81 % greater fruit production and 18 % and 22 % greater biomass, respectively”
Claim · model-written summary
At the first harvest, cultivar H10 had 18% greater biomass.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e3“at the first harvest, H10 and H1 had approximately 92 % and 81 % greater fruit production and 18 % and 22 % greater biomass, respectively”
Claim · model-written summary
At the first harvest, cultivar H1 had 22% greater biomass.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e3“at the first harvest, H10 and H1 had approximately 92 % and 81 % greater fruit production and 18 % and 22 % greater biomass, respectively”
Claim · model-written summary
At the second harvest, H10 had 60% more fruit production than the overall average.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e4“at the second harvest H10 had 60 % more fruit production than the overall average”
Claim · model-written summary
The hybrid lines H10 and H1 are more resilient than the other cultivars to high soil moisture.
- Material
- H10 and H1e5
- Treatment
- the stress of high soil moisturee5
- Outcome
- resiliente5
- Direction
- moree5
- Comparator
- the other cultivarse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e5“our findings suggest that the hybrid lines H10 and H1 are more resilient than the other cultivars to the stress of high soil moisture”
Claim · model-written summary
Stress from higher than average rainfall could impair coffee plant growth and production.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e6“stress due to higher than average rainfall could impair coffee plant growth and production”
Claim · model-written summary
Cultivar selection is likely to be an important tool for maintaining the viability of coffee production.
- Outcome
- viability of coffee productione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Hybrid coffee cultivars”
e7“cultivar selection is likely to be an important tool for maintaining the viability of coffee production”
The same questions in other papers
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rainfall · yield · Coffea (coffee)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.