Original Articles

Macadamia cultivar evaluation in Natal

Published in: South African Journal of Plant and Soil
Volume 6, issue 3, 1989 , pages: 149–153
DOI: 10.1080/02571862.1989.10634501
Author(s): P. AllanDepartment of Horticultural Science, Republic of South Africa

Abstract

Vegetatively propagated macadamia cultivars were grown in six ecologically different areas in Natal. Nut quality was tested over a number of years. The warm, moist north coast area is best for most cultivars tested with Keaau, Ka'u, Kakea and Beaumont giving nuts of best quality. The relatively newer Hawaiian cultivars Keaau and Ka'u produce nuts of reasonably acceptable quality in the cooler subtropical areas where the quality of the older cultivars Keauhou, Ikaika and Kakea is more limiting. The most recently released higher quality Hawaiian cultivars have yet to produce nuts. Hybrid cultivars are best for the cooler areas but their kernels and those of some other cultivars are more suitable for the dry kernel trade. Breeding of locally adapted M. integrifolia cultivars is an urgent priority. Sound management practices are essential to produce good quality kernels.

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