Abstract
The timing and availability of water supply are changing in the Okanagan Valley, and the availability of irrigation water in the late summers is a growing concern. Postharvest deficit irrigation (PDI) is a strategy that can be used to reduce water demands in sweet cherry orchards; previous studies in this region have reported no change in plant physiology or tree growth with irrigation volume reductions of up to 25%, postharvest. However, the effects of more severe postharvest reductions in irrigation volume remain unknown. We compared the effects of full irrigation (100% of conventional grower practice through the growing season) with 27%–33% reductions in irrigation postharvest (∼70% of conventional grower practice) and 47%–52% reductions in irrigation postharvest (∼50% of conventional grower practice) over a 3-year period (2019–2021) in five commercial sweet cherry orchards that ranged in elevation and latitude across the Okanagan Valley, BC, Canada. In the growing season following treatment application, PDI had no effect on stem water potential or photosynthesis in any year and at any site; there were also no effects of PDI treatment on tree growth. Findings from this study suggest that postharvest stem water potentials from −0.5 to −1.3 MPa, and one-time stem water potentials as low as −2.0 MPa, have no lasting effects on future plant water status, rates of photosynthesis, or plant growth. PDI shows potential as an effective water-saving measure in sweet cherry orchards in the Okanagan Valley.
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Claims 5
Claim · model-written summary
Postharvest deficit irrigation had no detected effect on stem water potential in the following growing season.
- Taxon
- sweet cherry (Prunus avium)
Prunus aviumt0 - Treatment
- PDIe0
- Outcome
- stem water potentiale0
- Direction
- no effecte0
- Qualifier
- in any year and at any sitee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the growing season following treatment application, PDI had no effect on stem water potential or photosynthesis in any year and at any site; there were also no effects of PDI treatment on tree growth.”
t0“sweet cherry (Prunus avium)”
Claim · model-written summary
Postharvest deficit irrigation had no detected effect on photosynthesis in the following growing season.
- Taxon
- sweet cherry (Prunus avium)Prunus aviumt0
- Treatment
- PDIe0
- Outcome
- photosynthesise0
- Direction
- no effecte0
- Qualifier
- in any year and at any sitee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the growing season following treatment application, PDI had no effect on stem water potential or photosynthesis in any year and at any site; there were also no effects of PDI treatment on tree growth.”
t0“sweet cherry (Prunus avium)”
Claim · model-written summary
Postharvest deficit irrigation had no detected effect on tree growth in the following growing season.
- Taxon
- sweet cherry (Prunus avium)Prunus aviumt0
- Treatment
- PDIe0
- Outcome
- tree growthe0
- Direction
- no effectse0
- Qualifier
- in any year and at any sitee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the growing season following treatment application, PDI had no effect on stem water potential or photosynthesis in any year and at any site; there were also no effects of PDI treatment on tree growth.”
t0“sweet cherry (Prunus avium)”
Claim · model-written summary
The observed postharvest water potential range was interpreted as having no lasting effect on later water status, photosynthesis, or growth.
- Taxon
- sweet cherry (Prunus avium)Prunus aviumt0
- Outcome
- future plant water status, rates of photosynthesis, or plant growthe0
- Direction
- no lasting effectse0
- Qualifier
- postharvest stem water potentials from −0.5 to −1.3 MPa, and one-time stem water potentials as low as −2.0 MPae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Findings from this study suggest that postharvest stem water potentials from −0.5 to −1.3 MPa, and one-time stem water potentials as low as −2.0 MPa, have no lasting effects on future plant water status, rates of photosynthesis, or plant growth.”
t0“sweet cherry (Prunus avium)”
Claim · model-written summary
Postharvest deficit irrigation may save water in Okanagan Valley sweet cherry orchards.
- Taxon
- sweet cherryPrunus aviume0
- Outcome
- effective water-saving measuree0
- Setting
- Okanagan Valleye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PDI shows potential as an effective water-saving measure in sweet cherry orchards in the Okanagan Valley.”
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See all 12 papers →irrigation · physiology: photosynthesis · Prunus avium (sweet cherry)Results agree
1 paper in the same direction as this paper
- negative
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.