Abstract
Abstract Container-grown rootstocks of pecan [Carya illinoensis (Wang) K. Koch] partitioned more dry matter into the roots when grown in a 4 pinebark : 1 sand (v/v) medium than when grown in a 1 pinebark : 1 sand (v/v) mixture. Water retention, nutrient retention, and aeration porosity differences between the media did not explain the partitioning difference observed. Greater depth of taproot penetration was observed in the lighter (4 : 1) mixture. ‘Farley’ and ‘Yawn School’ seedlings were lower in total dry weights when grown in a 4 : 1 mixture compared with a 1 : 1 mixture. Leaf analyses showed no nutritional disorder. No method could be offered other than an empirical one for testing compatibility between growing medium and cultivar.
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