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O azoto no crescimento e na produtividade de jovens pereiras 'Rocha'

Pear trees (Pyrus communis L. ‘Rocha’) grafted on quince ‘BA29’ were planted in February of 2003 at “Pêro Moniz” (“Cadaval”, Portugal) and drip-fertigated for three years with four N levels (0, 10, 20 and 40 kg N/ha per year) using ammonium nitrate. At planting and at the end of each season, tree height (A), trunk cross sectional area (AST) and the number of shoots and shoot length (NL and CL) were determined. ...