Water Relations of Peach Trees and Orchards

Chalmers, DJ; Olsson, KA; Jones, T.R.

doi:10.1016/b978-0-12-424157-2.50011-2

Cited by 31 publications

(27 citation statements)

References 43 publications

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“…Also, the similar plant water status found in T0, T1, and T2 plants was in agreement with the results from other authors who showed that the effect of crop load on tree water status is not obvious (Conejero, Ortuño, Mellisho, & Torrecillas, 2010;Naor et al, 1999) or is apparent only under deficit irrigation conditions (Naor, 2004). In contrast, other authors have indicated that crop load may increase transpiration rates (Chalmers, Olsson, & Jones, 1983), stomatal conductance (DeJong, 1986), leaf photosynthesis (Gucci, Grappardelli, Tustin, & Ravaglia, 1995), and tree water use (Mpelasoka, Behboudian, & Green, 2001), probably to compensate for the increased assimilate demand. In this sense, jujube fruit size did not change with modifications in crop load (Table 1), probably because of the unlimited availability of assimilates as indicated by the similar and very high g lmd values in the three crop load treatments (Naor et al, 1999).…”

Section: Resultssupporting

confidence: 92%

Sensory and physico-chemical quality attributes of jujube fruits as affected by crop load

Galindo

Noguera-Artiaga

Cruz

et al. 2015

LWT - Food Science and Technology

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Section: Resultssupporting

confidence: 92%

Sensory and physico-chemical quality attributes of jujube fruits as affected by crop load

Galindo

Noguera-Artiaga

Cruz

et al. 2015

LWT - Food Science and Technology

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“…In these experiments the decline was more pronounced for the first two drying cycles due to higher evaporative demands and, possibly, the effect of fruit load. The presence of fruit has been shown to increase transpiration or stomatal conductance, or both, in peaches [Prunus persica (L.) Batsch] (Chalmers et al, 1983), grapes (Vitis vinifera L.) (Downton et al, 1987), and apples (Malus domestica Borkh.) (Hansen, 1971;Lenz, 1986).…”

Section: Resultsmentioning

confidence: 99%

Pattern of Seasonal Water Use of Asian Pears Determined by Lysimeters and the Heat-pulse Technique

Caspari¹,

Behhoudian²,

Chalmers³

et al. 1993

jashs

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Seasonal water use data are presented for 4-year-old Pyrus serotina Rehder cv. Hosui growing in drainage lysimeters and trained onto a Tatura trellis. Weekly water use (WU) was calculated using the mass balance approach. For 8 consecutive weeks during late summer, instantaneous WU was also measured by the compensation heat-pulse technique for measuring sap flow. Although good agreement was found between the two methods for 4 weeks after probe installation, discrepancies increased after this time. Water use was highest in early to mid-January in New Zealand, averaging ≈8 liters/tree per day, or 2 liters·m-2 canopy surface area/day. Total water use over the growing season was 1070 liters/tree, or 245 liters·m-2 canopy surface area. The correlation coefficient between weekly WU and evaporation from a nearby Class A pan was 0.81 for the season. Weekly crop coefficients thus calculated for the well-watered trees ranged from 0.15 to 0.55 and 0.20 to 0.83 when calculated using canopy surface area and projected ground area, respectively. Low values were due to low values of canopy leaf area early in the season. Withholding irrigation during three periods resulted in a gradual decline in water use. Water-stressed trees had a lower predawn water potential than fully irrigated trees. This pattern was followed by a more-rapid decline during the morning, and a slower recovery during late afternoon and early evening. Midday leaf water potential never fell below -2.5 MPa.

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“…Reducing the wetted root volume can suppress shoot growth (Richards and Rowe, 1977). Increasing plant water deficits can suppress shoot and fruit growth (Chalmers, et al, 1983;Lakso, 1985;Landsberg and Jones, 1981), with vegetative growth being more sensitive than fruit growth Forshey and Elfving, 1989;Irving and Drost, 1987 All water was withheld during RDI and restored on 8 July at 100% ET in the RDI/ trickle treatment in 1988. In the same treatment, in 1989, all water was withheld until 6 June and applied at 100% ET from 6 to 30 June.…”

Section: Methodsmentioning

confidence: 99%

Deficit Irrigation to Control Vegetative Growth in Apple and Monitoring Fruit Growth to Schedule Irrigation

Ebel¹,

Proebsting²,

Evans³

1995

HortSci

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Additional index words. Malus domestica, croploadAbstract. A standard fruit growth curve, used commercially as an aid to hand thinning, was compared to periodic volume measurements of apple fruit (Malus domestica Borkh. 'Delicious') subjected to early season regulated deficit irrigation (RDI) to determine when to end RDI, which is used to control vegetative growth and save water. RDI suppressed stem water potential, stomatal conductance, and fruit growth rate compared to the trickleand furrow-irrigated controls, which wetted about one-half and the entire soil volume, respectively. Full irrigation was restored to RDI trees by trickle and microsprinklers, which wetted about one-half and the entire soil volume, respectively, after terminal buds set. Stem water potential, stomatal conductance, and fruit growth rate of RDI trees increased to that of the controls, except for RDI/trickle trees, which had 80% the stomatal conductance of the other treatments. Fruit weight at harvest was affected by an interaction of irrigation treatment and cropload. RDI trees had similar or less vegetative growth and similar or higher yield efficiency than the controls. We recommend ending RDI before fruit growth declines below the standard curve.

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Water Relations of Peach Trees and Orchards

Cited by 31 publications

References 43 publications

Sensory and physico-chemical quality attributes of jujube fruits as affected by crop load

Sensory and physico-chemical quality attributes of jujube fruits as affected by crop load

Pattern of Seasonal Water Use of Asian Pears Determined by Lysimeters and the Heat-pulse Technique

Deficit Irrigation to Control Vegetative Growth in Apple and Monitoring Fruit Growth to Schedule Irrigation

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