Regulated deficit irrigation reduces water use of almonds without affecting yield

Stewart, W. L.; Fulton, Allan; Krueger, William H.; Lampinen, Bruce; Shackel, Kenneth A.

doi:10.3733/ca.v065n02p90

Cited by 51 publications

(25 citation statements)

References 13 publications

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“…No significant impact of RDI was found on any agronomic parameter (table II). This confirms results found in pear [46,47], almond [48] and loquat [18]. However, some authors suggested that a moderate water deficit during the fruit growth stage decreased apple yield [9].…”

Section: Water Application Fruit Yield Fruit Weight and Stem Develosupporting

confidence: 81%

Influence of irrigation strategies on productivity, fruit quality and soil-plant water status of subsurface drip-irrigated apple trees

Chenafi

Monney

Arrigoni

et al. 2016

Fruits

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-Introduction. The aim of this work was to study the effects of regulated deficit irrigation (RDI) on fruit yield, fruit weight and fruit quality parameters, as well as soil-plant water relations, in apple orchards under highfrequency subsurface drip irrigation in a region with a continental climate. Materials and methods. Four irrigation treatments were applied in 2010 and 2011 to apple trees cv. 'Gala': T1, no irrigation; T2, optimal irrigation except during summer; T3, optimal irrigation except during summer when RDI with a threshold for irrigation at −1.2 MPa midday stem water potential (Ψ stem) was utilised; T4, optimal irrigation. The soil water status and plant water status were followed over two growing seasons. Results and discussion. The irrigation treatments had no significant impact on fruit yield. However, compared with optimal irrigation (T4) and RDI (T3), the absence of irrigation in summer (T1, T2) induced low Ψ stem (< −1.2 MPa), decreased fruit size and slightly increased the soluble solid, vitamin C and polyphenol contents of the fruits. The RDI (T3) during summer allowed a water-use reduction of 47% without loss in fruit yield, fruit weight and fruit quality compared with the optimal irrigation (T4). Conclusion. The RDI treatment saved 47% water compared with optimal irrigation without negative impacts on yield and fruit quality. In the temperate conditions of Switzerland, Ψ stem, as well as Ψ soil, are well adapted for scheduling RDI in apple orchards.Keywords: Switzerland / apple / Malus domestica / irrigation scheduling / regulated deficit irrigation / water stress / phenolics / vitamin C Résumé -Influence de stratégies d'irrigation sur la productivité, la qualité des fruits et le statut hydrique sol-plante de pommiers arrosés en goutte à goutte enterré. Introduction. Le but de cette étude a été d'analyser les effets de la régulation déficitaire de l'irrigation (RDI), avec des applications d'eau en goutte à goutte enterré à fréquence élevée, sur le rendement en fruits, le poids des fruits, et la qualité des fruits, ainsi que sur les relations hydriques entre sol et plante sur des vergers de pommier sous un climat continental. Matériel et méthodes. Quatre procédés d'irrigation ont été appliqués aux pommiers (cv. 'Gala') en 2010 et 2011 : T1, témoin non irrigué ; T2, irrigation optimal à l'exception d'absence d'irrigation durant l'été ; T3, irrigation optimal à l'exception une restriction d'irrigation induisant un stress modéré durant l'été, avec un seuil fixé à -1.2 MPa de Ψ stem (irrigation déficitaire régulée, RDI) ; T4, irrigation optimale. L'impact de ces régimes sur le potentiel hydrique du sol (Ψ soil) et le potentiel hydrique du tronc (Ψ stem) a été suivi pendant deux saisons. Résultats et discussion. Les régimes d'irrigation n'ont eu aucun impact significatif sur le rendement en fruits. Toutefois, par rapport à l'irrigation optimale (T4) et RDI (T3), l'absence d'irrigation en été (T1, T2) induit des potentiels de tronc bas (Ψ stem < -1,2 MPa) et une diminution du poids des ...

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Section: Water Application Fruit Yield Fruit Weight and Stem Develosupporting

confidence: 81%

Influence of irrigation strategies on productivity, fruit quality and soil-plant water status of subsurface drip-irrigated apple trees

Chenafi

Monney

Arrigoni

et al. 2016

Fruits

View full text Add to dashboard Cite

show abstract

“…A possible RDI strategy would include irrigation management that sustains SWP at low to mild levels of stress (−6 to −14 bars SWP) from leaf out until just prior to hull split. A recent experiment in Glenn County, California (Stewart et al 2011), where salinity is not a management concern, showed that SWP ranging from −14 to −18 bars (moderate stress) can be tolerated during hull split by almond without economic effects on kernel yield. A return to low to mild stress (−10 to −14 bars SWP) prior to harvest will help prevent leaf loss during the harvest period.…”

Section: Using Swp In Almond Irrigationmentioning

confidence: 99%

Using the Pressure Chamber for Irrigation Management in Walnut, Almond and Prune

Fulton¹,

Grant²,

Buchner³

et al. 2014

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“…2). The decrease of yield under WS can be related with more negative SWP [Naor 2006, Naor et al 2008, Stewart et al 2011. On the other hand, 2xWW may cause oxygen deficiency in a soil which may adversely affect crop yield [Sun et al 1995, Akhtar andNazir 2013] without altering SWP, at least within our range of values.…”

Section: Resultsmentioning

confidence: 60%

“…3). At tree level, the effect of an abiotic stress factor is closely associated with the decrease of the fruitfulness of a plant [Yordanov et al 2000, Jaleel et al 2009, Stewart et al 2011.…”

Section: Resultsmentioning

confidence: 99%

Investigating Effects of Over-Irrigation and Deficit Irrigation on Yield and Fruit Quality in Pink Ladytm ‘Rosy Glow’ Apple

Atay¹,

Hucbourg²,

Drevet³

et al. 2017

Acta sci. Pol. Hortorum Cultus

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Fruit production has to be adapted to climate change that is often associated with heat and water deficit episodes. To develop efficient strategies on how to manage commercial orchards under deficit water supply, we need to know the effects of water-stress on crop production. However, when the water supply is abundant apple growers often think that over-irrigation gives higher marketable fruit yield than potential evapotranspiration-based or sensor-based (e.g. tensiometer, dendrometer) irrigation. We therefore aimed to evaluate the effects of three water regimes, namely well-watered (100% of crop evapotranspiration -ETc, WW), 25% of ETc water deficit over the season (water-stressed, WS), and twofold of WW (200% of ETc, 2xWW), on midday stem water potential (SWP), crop yield and fruit quality of Pink Lady TM 'Rosy Glow' apples. As expected, SWP was lower in WS than in the others, but both WS and 2xWW decreased fruit yield, although 2xWW tended to increase yield in the >70% color class and ensured quite a constant amount of yield at each picking time. Soluble solid content (SSC) in fruit was higher in WS. As a whole, our results suggest that over-irrigation that is sometimes recommended to keep a safety margin should be considered with caution. Rather, a mild water-stress, between WS and WW in our experiment, may represent a good compromise for a good quality yield.

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Regulated deficit irrigation reduces water use of almonds without affecting yield

Cited by 51 publications

References 13 publications

Influence of irrigation strategies on productivity, fruit quality and soil-plant water status of subsurface drip-irrigated apple trees

Influence of irrigation strategies on productivity, fruit quality and soil-plant water status of subsurface drip-irrigated apple trees

Using the Pressure Chamber for Irrigation Management in Walnut, Almond and Prune

Investigating Effects of Over-Irrigation and Deficit Irrigation on Yield and Fruit Quality in Pink Ladytm ‘Rosy Glow’ Apple

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