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Effects of flooding and soil phosphorus levels on pecan seedlings



Effects of flooding and soil phosphorus levels on pecan seedlings



Hortscience 23(3 SECT 1): 595-597



Thirty-six-day-old 'Dodd' pecan seedling [Carya illinoensis (Wangenh) C. Koch] were flooded for 31 days or not flood in factorial combinations with 0, 215, or 430 g P per m3 of media. Flooding decreased leaf number, leaf area, leaf and root dry weight, and induced stomatal closure. Flooding also reduced leaf, trunk, and root K, Ca, Mg, Zn, Fe, and Mn concentrations. Nitrogen was lower in the leaves and trunk of flooded trees, but higher in the roots of flooded trees than unflooded trees. Flooding decreased the leaf P concentrations, but did not affect the P concentration in the roots. Phosphorus application increased leaf P concentration in unflooded trees, but not flooded trees.

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