Conference paper
Effect of fertigation with nitrogen and foliar application of some nutrients on growth, yield and apple fruit mineral composition
Zlatko Čmelik
Stanislav Tojnko
Tatjana Unuk
Abstract
The effect of foliar application of some nutrients and fertigation in comparison with broadcast nitrogen fertilization on growth, yield and mineral fruit composition of young apple ‘Golden Delicious’, grafted on M9 rootstock was investigated in years 2000-2002. Two orchard experiments were established, one with 2-year and the other with 3-year old trees, grown at a spacing of 3.2 x 0.7 m and trained to super spindle. The results showed low beneficial effect of applied treatments, and relatively high effect of crop load on growth, yield and fruit mineral content. Ratios of N/Ca, K/Ca and (Mg + K)/Ca in fruits indicated good storage quality as related to normal crop load. Contrary to that, when treatments were applied on trees with inadequate crop load, no beneficial effect occurred and fruits showed low storage life. This result illustrates the important balance between vegetative growth and fruit load that occurs during tree establishment.
Keywords
Malus domestica; ‘Golden Delicious’; mineral nutrition; crop load; fruit storage quality
Hrčak ID:
1939
URI
Publication date:
1.10.2005.
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