Abstract
In this study, field experiments were conducted to investigate the effects of two water-saving practices—partial root-zone drying (PRD) and deficit irrigation (DI)—on potato growth and yield in comparison with full irrigation (FI). The required FI amount was applied to the potato plants to enable 100% crop evapotranspiration, and the plants received 70% and 50% of the irrigation amount of FI for DI (DI70 and DI50) and PRD (PRD70 and PRD50), respectively. The physiological characteristics of the potatoes during the 2014–2015 seasons indicated that the relative chlorophyll contents were not significantly higher for the DI and PRD treatments than for the FI treatment. The DI50 had the lowest net photosynthesis rate (p < 0.05) while DI50 and PRD50 had significantly lower stomatal conductance (gs) values in both years. Meanwhile, the values of the PRD treatments were lower than those of DI treatments based on the transpiration rates. The xylem (abscisic acid) based on PRD50 had an average increase of 0.38 mol/m2 s due to decreasing gs values compared with other water-saving irrigation treatments. However, the FI and DI treatments had increased fresh tuber yields compared with the yields of PRD treatments. Furthermore, the PRD70 and PRD50 treatments significantly reduced the water productivity (WP) values by 30.16% and 41.32%, respectively, relative to that of FI.
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Claims 11
Claim · model-written summary
Relative chlorophyll content of potato under deficit irrigation was not significantly higher than under full irrigation.
- Taxon
- potato
Solanum tuberosume0 - Treatment
- DIe1
- Outcome
- relative chlorophyll contentse1
- Direction
- not significantly highere1
- Comparator
- FI treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the relative chlorophyll contents were not significantly higher for the DI and PRD treatments than for the FI treatment”
Claim · model-written summary
Relative chlorophyll content of potato under partial root-zone drying was not significantly higher than under full irrigation.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- PRDe1
- Outcome
- relative chlorophyll contentse1
- Direction
- not significantly highere1
- Comparator
- FI treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the relative chlorophyll contents were not significantly higher for the DI and PRD treatments than for the FI treatment”
Claim · model-written summary
DI50 had the lowest net photosynthesis rate in potato (p < 0.05).
- Taxon
- potatoSolanum tuberosume0
- Treatment
- DI50e1
- Outcome
- net photosynthesis ratee1
- Direction
- loweste1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“The DI50 had the lowest net photosynthesis rate (p < 0.05)”
Claim · model-written summary
DI50 had significantly lower stomatal conductance in potato in both years.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- DI50e1
- Outcome
- stomatal conductance (gs) valuese1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“DI50 and PRD50 had significantly lower stomatal conductance (gs) values in both years”
Claim · model-written summary
PRD50 had significantly lower stomatal conductance in potato in both years.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- PRD50e1
- Outcome
- stomatal conductance (gs) valuese1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“DI50 and PRD50 had significantly lower stomatal conductance (gs) values in both years”
Claim · model-written summary
Transpiration rates of potato under PRD treatments were lower than under DI treatments.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- PRD treatmentse1
- Outcome
- transpiration ratese1
- Direction
- lowere1
- Comparator
- DI treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the values of the PRD treatments were lower than those of DI treatments based on the transpiration rates”
Claim · model-written summary
Xylem abscisic acid under PRD50 increased by an average of 0.38 mol/m2 s, due to decreasing gs values, compared with the other water-saving irrigation treatments.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- PRD50e1
- Outcome
- xylem (abscisic acid)e1
- Direction
- increasee1
- Value
- 0.38 mol/m2 se1
- Comparator
- other water-saving irrigation treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“The xylem (abscisic acid) based on PRD50 had an average increase of 0.38 mol/m2 s due to decreasing gs values compared with other water-saving irrigation treatments”
Claim · model-written summary
Full irrigation increased fresh tuber yield of potato compared with PRD treatments.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- FIe1
- Outcome
- fresh tuber yieldse1
- Direction
- increasede1
- Comparator
- PRD treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the FI and DI treatments had increased fresh tuber yields compared with the yields of PRD treatments”
Claim · model-written summary
Deficit irrigation increased fresh tuber yield of potato compared with PRD treatments.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- DIe1
- Outcome
- fresh tuber yieldse1
- Direction
- increasede1
- Comparator
- PRD treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the FI and DI treatments had increased fresh tuber yields compared with the yields of PRD treatments”
Claim · model-written summary
PRD70 significantly reduced potato water productivity by 30.16% relative to full irrigation.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- PRD70e1
- Outcome
- water productivity (WP)e1
- Direction
- reducede1
- Value
- 30.16%e1
- Comparator
- FIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the PRD70 and PRD50 treatments significantly reduced the water productivity (WP) values by 30.16% and 41.32%, respectively, relative to that of FI”
Claim · model-written summary
PRD50 significantly reduced potato water productivity by 41.32% relative to full irrigation.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- PRD50e1
- Outcome
- water productivity (WP)e1
- Direction
- reducede1
- Value
- 41.32%e1
- Comparator
- FIe1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The required FI amount was applied to the potato plants”
e1“the PRD70 and PRD50 treatments significantly reduced the water productivity (WP) values by 30.16% and 41.32%, respectively, relative to that of FI”
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See all 7 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.