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Paulownia Tomentosa: Effects of Fertilization and Coppicing in Plantation Establishment

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Ten fertilizer treatments were applied to 400 field-planted container-grown Paulownia tomentosa (Thunb.) Steud. seedlings arranged in a completely randomized design. Seedlings received either no fertilizer, fritted micronutrients at 768 lb/ac, or granular fertilizer (N:P2O5:K2O) of 20:20:20 or 25:10:10 at 100, 200, 400, or 800 lb/ac. First-season growth was significantly increased with the use of increased rates of granular fertilizers, and specific formulations within rates provided some growth benefit. Second-season growth of new sprouts was less variable than first-season growth. One-half of the seedlings were coppiced in the late fall of the first season and the other half were coppiced in the early spring in the beginning of the second season. Coppicing treatments provided no significant differences in second-season growth. Based on the results of this study, it is recommended that seedlings be fertilized with 25:10:10 at 800 lb/ac at the time of planting during the first season of establishment and then coppiced in the early spring of the second season of establishment.
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Document Type: Journal Article

Affiliations: Assistant Professor of Agronomy, University of Maryland, College Park 20742

Publication date: 01 May 1983

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