Regulated deficit irrigation of rhododendrons grown in containers

• Autorzy: Matysiak B. , Koniarski M. , Treder W.

Identyfikatory

DOI

10.14597/infraeco.2017.2.1.038

• Języki publikacji: EN

Abstrakty

EN

The effect of deficit irrigation imposed in July-August period on shoot growth and flower formation in container grown rhododendron in commercial nursery were assessed. Plants were exposed to three irrigation regimes based on potential evapotranspiration rates (100% ET0 - well-watered control plants, 75% ET0 - moderate drought and 50% ET0 - severe drought). The values of evapotranspiration were calculated using the Penman-Monteith model. The degree of drought had significant effect on the plant growth and water status of plants. Severe drought inhibited secondary shoot elongation compared to less stressful regime but did not affect flower formation. ‘Catawbiense Boursault’, ‘Nova Zembla’ and ‘Pearce’s American Beauty’ plants exposed to severe drought were shorter, respectively by 39, 45 and 86% than well-irrigated plants and two of the three cultivars ‘Catawbiense Boursault’ and ‘Pearce’s American Beauty’ produced fewer secondary branches (5.9 and 0.3) compared to control plants (9.2 and 1.7, respectively). Moderate drought did not affect plant growth but resulted in flower bud formation in ‘Nova Zembla’ and ‘Pearce’s American Beauty’s cultivars. Estimated water consumption by rhododendrons throughout the whole growing season was reduced by 15% for moderate and 25% for severe drought compared to control, well-watered plants. The results have significant implications for water conserving in commercial production of rhododendrons.

Słowa kluczowe

EN

evapotranspiration; irrigation; ornamental nursery; regulated deficit irrigation; RDI; rhododendron

• Wydawca: Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich
• Czasopismo: Infrastruktura i Ekologia Terenów Wiejskich
• Rocznik: 2017
• Tom: nr II/1
• Strony: 509--519
• Opis fizyczny: Bibliogr. 20 poz., tab., wykr.

Twórcy

autor

Matysiak B.

• Research Institute of Horticulture, Department of General Biology 96-100 Skierniewice, Konstytucji 3 Maja 1/3, Poland Phone. [phone]

autor

Koniarski M.

• Research Institute of Horticulture, Department of Nursery and Seed Science 96-100 Skierniewice, Konstytucji 3 Maja 1/3, Poland Phone. [phone]

autor

Treder W.

• Research Institute of Horticulture, Horticultural Engineering Department 96-100 Skierniewice, Konstytucji 3 Maja 1/3, Poland Phone. [phone]

Bibliografia

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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).