Thirty-six-day-old ‘Dodd’ pecan seedlings [Carya illinoensis (Wangenh) C. Koch] were flooded for 31 days or not flooded 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 concentration, but did not affect the P concentration in the roots. Phosphorus application increased leaf P concentration in unflooded trees, but not flooded trees.
Present address; Agricultural Research Station, D.I. Kahn, NWFP, Pakistan.
Received for publication 4 Dec. 1986. Oklahoma Agricultural Experiment Station Journal Series no. J-5335. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.