Yield comparison of Australian selections of almond cv. Nonpareil

Abstract

Eight Nonpareil almond clones on Nemaguard rootstock were yield-tested in a field trial at Irymple, Victoria, for 4 cropping seasons (1986-89). Although few significant differences in yield were recorded in any year, the results showed that the Nonpareil clones differed in total yield and in total yield per unit of butt cross-sectional area by as much as 50%. For example, clone L54/3 produced a total dry kernel yield per tree per unit of butt crosssectional area of 51.2 kglcm2, while the high yielding clone G11/16 produced a yield of 77.6 kg/cm2. The 3 top-yielding clones (GI 1/16, P7/29 and K5/7) produced total dry kernel yields (1986-89) per tree per unit of butt cross-sectional area of 77.6, 73.6 and 71.7 g/cm2. However, clone K5/7 proved to be subject to non-infectious bud failure, and it is concluded that clones G11/16 and P7/29 could be useful, high-yielding clones for the Australian almond industry.