Izvorni znanstveni članak
Growth and cropping of ‘Golden Delicious’ apple related to fertigation with nitrogen
Zlatko Čmelik
Stanislav Tojnko
Sažetak
The study was conducted in a ‘Golden Delicious’/M9 orchard (3000 trees/ha) to investigate the effects of fertigation with N at 45, 60 and 120 kg/ha, and irrigation without fertilizers on the growth and productivity of the crop. Treatment durations were from 1 May to 20 June, and from 1 May to 1 August. Treatments began during the 2nd year after planting, and lasted eight years (1992-1999). Fertigation with N at different rates showed no consistent effect on the dynamic of cropping, cumulative yield and yield efficiency. The tendency to biennial bearing in the treatment with N-fertigation was generally low and markedly higher in the treatment without fertigation. The highest cumulative yield, with low index of alternate bearing was obtained in the treatment receiving 60 kg N/ha from 1 May to 20 June. The yield was obtained increasing dynamic followed the similar trend in all treatments, and full productivity was achieved in the fifth year after planting.
Ključne riječi
Malus x domestica; mineral nutrition; yield; dynamic of cropping; alternate bearing
Hrčak ID:
4505
URI
Datum izdavanja:
10.7.2006.
Posjeta: 2.282 *