Paper · 2020 · KnE Engineering

Deficit Irrigation in Peach Orchards under Water Scarcity Conditions

António Canatário Duarte; Abel Veloso; António Ramos; et al.

6
claims
13
verbatim quotes
4
citations
2
research areas
✓
Open access

Abstract

The irrigation patterns in two peach orchards, located in the central eastern region of Portugal, called “Beira Interior”, and the effect of different amounts of irrigation on the total production and fruit quality were evaluated. The experiment was conducted in 2016, in two different orchards, and included three treatments correspondent to three different flow rates per tree: 8, 12 and 16 l/hour. The water balance, which included the water supplied by rain and irrigation and the crop evapotranspiration, was developed. At harvest, crop production, pulp firmness and percentage of the total soluble solids were evaluated. There were no significant differences between treatments in the average production per tree. However, in one of the orchards production increased with the volume of irrigation. In the same orchard, fruit firmness decreased with the increasing water supply. Total soluble solids had decreased with the increasing water supply in both orchards, probably as a consequence of the dilution effect due, directly, to the water incorporated in the fruits, or, indirectly, to the larger fruits produced by the trees that were irrigated more. In general, the treatments used in this study as well as in the farmers’ practices, the supplied water was in deficit, but the farmers tend empirically to follow closely the evolution of evapotranspiration. Keywords: Deficit irrigation, Peach tree, Production, Total soluble solids, Fruit firmness

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Claims 6

Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Different amounts of irrigation did not significantly change average production per peach tree.

Treatment
different amounts of irrigatione0
Outcome
average production per treee1
Direction
no significant differencese1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Prunus persica
Prunus persica · TaxonAllagash Brewing · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Deficit Irrigation in Peach Orchards”

✓ located verbatim in the source · title, characters 0–36 · show in text ↑
e0

“the effect of different amounts of irrigation on the total production and fruit quality were evaluated”

✓ located verbatim in the source · abstract, characters 127–229 · show in text ↑
e1

“There were no significant differences between treatments in the average production per tree”

✓ located verbatim in the source · abstract, characters 627–718 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

In one orchard, peach production increased with the volume of irrigation.

Treatment
volume of irrigatione2
Outcome
productione2
Direction
increasede2
Qualifier
in one of the orchardse2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Prunus persica
Prunus persica · TaxonAllagash Brewing · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Deficit Irrigation in Peach Orchards”

✓ located verbatim in the source · title, characters 0–36 · show in text ↑
e2

“However, in one of the orchards production increased with the volume of irrigation”

✓ located verbatim in the source · abstract, characters 720–802 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

In the same orchard, peach fruit firmness decreased with increasing water supply.

Treatment
increasing water supplye3
Outcome
fruit firmnesse3
Direction
decreasede3
Qualifier
In the same orcharde3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Prunus persica
Prunus persica · TaxonAllagash Brewing · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Deficit Irrigation in Peach Orchards”

✓ located verbatim in the source · title, characters 0–36 · show in text ↑
e3

“In the same orchard, fruit firmness decreased with the increasing water supply”

✓ located verbatim in the source · abstract, characters 804–882 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Total soluble solids of peach decreased with increasing water supply in both orchards.

Treatment
increasing water supplye4
Outcome
Total soluble solidse4
Direction
decreasede4
Qualifier
in both orchardse4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Prunus persica
Prunus persica · TaxonAllagash Brewing · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Deficit Irrigation in Peach Orchards”

✓ located verbatim in the source · title, characters 0–36 · show in text ↑
e4

“Total soluble solids had decreased with the increasing water supply in both orchards”

✓ located verbatim in the source · abstract, characters 884–968 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The supplied water was in deficit in the study treatments and in farmers practices.

Outcome
supplied watere5
Qualifier
in deficite5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Prunus persica
Prunus persica · TaxonAllagash Brewing · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Deficit Irrigation in Peach Orchards”

✓ located verbatim in the source · title, characters 0–36 · show in text ↑
e5

“the supplied water was in deficit”

✓ located verbatim in the source · abstract, characters 1244–1277 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Farmers tend empirically to follow closely the evolution of evapotranspiration when they irrigate peach orchards.

Outcome
follow closely the evolution of evapotranspiratione6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Prunus persica
Prunus persica · TaxonAllagash Brewing · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

t0

“Deficit Irrigation in Peach Orchards”

✓ located verbatim in the source · title, characters 0–36 · show in text ↑
e6

“the farmers tend empirically to follow closely the evolution of evapotranspiration”

✓ located verbatim in the source · abstract, characters 1283–1365 · show in text ↑

irrigation · yield · Prunus persica (peach)Results differ

55 papers: 31 positive, 24 negative or no effect

30 papers in the same direction as this paper · 23 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. negative
  3. negative

51 papers more in this group

See all 55 papers →

irrigation · quality: postharvest · Prunus persica (peach)Positive and negative results

10 papers: 8 positive, 2 negative or no effect

1 paper in the same direction as this paper · 8 in the opposite direction

  1. positive
  2. positive
  3. positive

6 papers more in this group

See all 10 papers →

irrigation · quality: sugar starch · Prunus persica (peach)Positive and negative results

13 papers: 10 positive, 3 negative or no effect

2 papers in the same direction as this paper · 10 in the opposite direction

  1. positive
  2. positive
  3. positive

9 papers more in this group

See all 13 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.