Journal article

Long-term effects of restricted root volume and regulated deficit irrigation on peach: II. Productivity and water use

AM Boland, PH Jerie, PD Mitchell, I Goodwin, DJ Connor

Journal of the American Society for Horticultural Science | Published : 2000

Abstract

Individual and interactive effects of restricted root volume (RRV) and regulated deficit irrigation (RDI) on productivity and water use of peach trees [Prunus persica (L.) Batsch 'Golden Queen'] were studied over 3 years (1992-95). Trees were grown in lysimeters of five different soil volumes (0.025, 0.06, 0.15, 0.4, and 1.0m ) with either full or deficit (RDI) irrigation. In Years 3 and 4, fruit size was reduced by up to 30% on trees in the two smallest volumes. Tree water use was positively related to increasing soil volume (linear, P<0.001; quadratic, P<0.011) in all years ranging from 1.8 to 4.4 L·mm E(pan) in the post-RDI period of Year 2. Water use of deficit-irrigated trees was less ..

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