[Peculiarities of growth and productivity of orchard with compact crown on 62-396 and 54-118 rootstocks]
2007
Ignatkova, N.V., National Academy of Sciences. Scientific and Practical Center for Potato, Vegetable and Fruit Growing (Belarus). Institute for Fruit Growing
The data of research carried out in 2002-2006 are presented. Optimal constructions for commercial orchards on the dwarf rootstock 62-396 and the semi-dwarf rootstock 54-118 combined with varieties of various vigor were studied. The experimental orchard was established with 2-year-old saplings in 1990. Trunk cross sectional area (TCSA) for the apple varieties Antej and Telisaare on various dwarf rootstocks with various crown training systems was lower for closer spacing and higher planting density. Higher increase in TCSA was noted for less dense plantations, namely, for plantation with in-row spacing being 2.5-3.0 m (163.2 – 191.2 square cm for 54-118 rootstock with plantiung density 833 and 1000 tree/ha; 117.3 – 153.4 square cm for 62-396 rootstock). Yield (kg per tree) of the apple varieties Antej and Telisaare on the studied rootstocks for all variants of crown forming systems was higher for wider spacing, however, productivity (in t per ha) raised with the increase in planting density (trees per ha). In 2002-2006 the highest yield has been received at variety Antej on both rootstocks at planting scheme 4x1.5 m – 38.5-40.7 t/ha per square unit. The least average yield has been received at variety Telisaare on rootstocks 54-118 and 62-396 – 17.4-19.3 t/ha per square unit
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