Abstract
Abstract With a rising global population and looming water shortages in the U.S., there is a pressing need for water-efficient farming methods. The water needs of potato plants decrease in the late season due to foliage aging and tuber maturation. Therefore, proper late-season irrigation is vital in preventing water waste and maximizing potato profits. This study assessed the feasibility of reducing late-season irrigation to improve crop water productivity (WPc), tuber quality, and economic return. Field trials were planted near Othello, WA, across three years (2018–20). Treatments included five irrigation levels (ILs), 40%, 60%, 80%, 100%, and 120% of modeled evapotranspiration (ET), and five potato cultivars: Alturas, Clearwater Russet, Ranger Russet, Russet Burbank, and Umatilla Russet. Treatments started 100 to 105 days after planting (DAP), approximately 1500 day degrees (at or near peak canopy growth), and ended at vine kill, 150 to 155 DAP. Water from reduced ILs of 40% to 80% ET was more efficiently converted into yield (WPc) for Alturas than higher ILs; however, economic return for all cultivars typically peaked when irrigation was supplied at or above 80% ET. Tuber quality generally improved with a reduction in irrigation level, occasionally at the expense of yield and economic value.
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Claims 5
Claim · model-written summary
Alturas converted irrigation water to yield more efficiently at 40–80% ET than at higher levels.
- Taxon
- Potato
Solanum tuberosumt0 - Material
- Alturase0
- Treatment
- 40% to 80% ETe0
- Outcome
- yield (WPc)e0
- Direction
- more efficientlye0
- Comparator
- higher ILse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water from reduced ILs of 40% to 80% ET was more efficiently converted into yield (WPc) for Alturas than higher ILs”
t0“Potato”
Claim · model-written summary
Economic return typically peaked at irrigation of at least 80% ET for all cultivars.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- at or above 80% ETe0
- Outcome
- economic returne0
- Direction
- peakede0
- Qualifier
- typicallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“economic return for all cultivars typically peaked when irrigation was supplied at or above 80% ET”
t0“Potato”
Claim · model-written summary
Reducing irrigation generally improved tuber quality.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- reduction in irrigation levele0
- Outcome
- Tuber qualitye0
- Direction
- improvede0
- Qualifier
- generallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tuber quality generally improved with a reduction in irrigation level”
t0“Potato”
Claim · model-written summary
Reduced irrigation occasionally decreased yield.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- reduction in irrigation levelt1
- Outcome
- yielde0
- Direction
- at the expense ofe0
- Qualifier
- occasionallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“occasionally at the expense of yield”
t0“Potato”
t1“reduction in irrigation level”
Claim · model-written summary
Reduced irrigation occasionally decreased economic value.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- reduction in irrigation levelt1
- Outcome
- economic valuee0
- Direction
- at the expense ofe0
- Qualifier
- occasionallye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“occasionally at the expense of yield and economic value”
t0“Potato”
t1“reduction in irrigation level”
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See all 9 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.