Characterization of the Kentville Stock Clone Apple Rootstocks. II. Precocity and Productivity

in Journal of the American Society for Horticultural Science
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  • 1 Research Station, Agriculture Canada, Kentville, N.S., B4N 1J5, Canada

The precocity and productivity of 30 Kentville Stock Clone (KSC) apple (Malus domestica Borkh.) rootstocks, with `McIntosh' and `Delicious' as scion cultivars, were assessed independently of each other using a procedure involving computer-aided fitting of curves to yearly production data. A good fit to the data was obtained after biennial fluctuations in yield were removed by using a weighted, 3-year running average. For all 30 rootstocks combined, `McIntosh' was more precocious and reached a higher level of productivity compared to `Delicious'. There was poor correlation between precocity and productivity.

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