Abstract
We investigated canopy transpiration and canopy conductance of peach trees under three irrigation patterns: fixed 1/2 partial root zone drip irrigation (FPRDI), alternate 1/2 partial root zone drip irrigation (APRDI) and full root zone drip irrigation (FDI). Canopy transpiration was measured using heat pulse sensors, and canopy conductance was calculated using the Jarvis model and the inversion of the Penman–Monteith equation. Results showed that the transpiration rate and canopy conductance in FPRDI and APRDI were smaller than those in FDI. More significantly, the total irrigation amount was greatly reduced, by 34·7% and 39·6%, respectively for APRDI and FPRDI in the PRDI (partial root zone drip irrigation) treatment period. The daily transpiration was linearly related to the reference evapotranspiration in the three treatments, but daily transpiration of FDI is more than that of APRDI and FPRDI under the same evaporation demand, suggesting a restriction of transpiration water loss in the APRDI and FPRDI trees. FDI needed a higher soil water content to carry the same amount of transpiration as the APRDI and FPRDI trees, suggesting the hydraulic conductance of roots of APRDI and FPRDI trees was enhanced, and the roots had a greater water uptake than in FDI when the average soil water content in the root zone was the same. By a comparison between the transpiration rates predicted by the Penman–Monteith equation and the measured canopy transpiration rates for 60 days during the experimental period, an excellent correlation along the 1:1 line was found for all the treatments (R2 > 0·80), proving the reliability of the methodology. Copyright © 2005 John Wiley & Sons, Ltd.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
FPRDI reduced peach transpiration rate relative to FDI.
- Taxon
- peach trees
Prunus persicat0 - Treatment
- FPRDIe0
- Outcome
- transpiration ratee0
- Direction
- smallere0
- Comparator
- FDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transpiration rate and canopy conductance in FPRDI and APRDI were smaller than those in FDI”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
APRDI reduced peach canopy conductance relative to FDI.
- Taxon
- peach treesPrunus persicat0
- Treatment
- APRDIe0
- Outcome
- canopy conductancee0
- Direction
- smallere0
- Comparator
- FDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the transpiration rate and canopy conductance in FPRDI and APRDI were smaller than those in FDI”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
APRDI reduced total irrigation amount by 34·7%.
- Taxon
- peach treesPrunus persicat0
- Treatment
- APRDIe0
- Outcome
- total irrigation amounte0
- Direction
- reducede0
- Value
- 34·7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total irrigation amount was greatly reduced, by 34·7% and 39·6%, respectively for APRDI and FPRDI”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
FPRDI reduced total irrigation amount by 39·6%.
- Taxon
- peach treesPrunus persicat0
- Treatment
- FPRDIe0
- Outcome
- total irrigation amounte0
- Direction
- reducede0
- Value
- 39·6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the total irrigation amount was greatly reduced, by 34·7% and 39·6%, respectively for APRDI and FPRDI”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
Daily transpiration was linearly related to reference evapotranspiration under all three irrigation treatments.
- Taxon
- peach treesPrunus persicat0
- Treatment
- three treatmentse0
- Outcome
- daily transpiratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The daily transpiration was linearly related to the reference evapotranspiration in the three treatments”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
At equal evaporation demand, FDI daily transpiration exceeded APRDI daily transpiration.
- Taxon
- peach treesPrunus persicat0
- Treatment
- FDIe0
- Outcome
- daily transpiratione0
- Direction
- more thane0
- Qualifier
- same evaporation demande0
- Comparator
- APRDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“daily transpiration of FDI is more than that of APRDI and FPRDI under the same evaporation demand”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
FDI required higher soil water content than partial root zone irrigation for equal transpiration.
- Taxon
- peach treesPrunus persicat0
- Treatment
- FDIe0
- Outcome
- soil water contente0
- Direction
- highere0
- Comparator
- APRDI and FPRDIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“FDI needed a higher soil water content to carry the same amount of transpiration as the APRDI and FPRDI trees”
t0“of peach trees under three irrigation patterns”
Claim · model-written summary
Predicted and measured canopy transpiration were closely correlated across treatments.
- Taxon
- peach treesPrunus persicat0
- Outcome
- correlatione0
- Value
- R2 > 0·80e0
- Qualifier
- all the treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“an excellent correlation along the 1:1 line was found for all the treatments (R2 > 0·80)”
t0“of peach trees under three irrigation patterns”
The same questions in other papers
irrigation · soil: physics · Prunus persica (peach)Positive and negative results
3 in the opposite direction
- positive
- positive
- positive
irrigation · physiology: gas exchange · Prunus persica (peach)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
1 paper more in this group
See all 5 papers →irrigation · growth · Prunus persica (peach)Positive and negative results
18 papers in the same direction as this paper · 24 in the opposite direction
- positive
- positive
- positive
39 papers more in this group
See all 43 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.