Effect of nitrogen fertilization in field trails conducted in commercial fruit orchards

• Published in: Acta horticulturae pp. 413 - 418
• Main Authors: Sadowski, A, Moszynski, M, Wrona, D, Szwedo, J, Zmuda, E, Pacholak, E, Kozera, G, Ostrowska, J, Makosz, E
• Format: Journal Article
• Language: English
• Published: 1990
• Subjects: leaves; Malus domestica; nitrogen content; nitrogen fertilizers; orchards; yield response functions; Poland

Simple field fertilizer trials have been carried out in 30 commercial apple orchards in four fruit regions of Poland since spring 1987. In the first two years of study (1987 and 1988) a slight tendency to an increase of leaf N content as a result of increasing N fertilization (from 0 to 60 or from 6...