Walnut Rootstock Selection for Calcareous Soils in Southeastern Australia and the Potential for Expanding the Walnut Industry in the Region
Persian walnuts are grown over relatively small area within irrigated settlements of the Murray Lowlands Province of Southeastern Australia compared with traditional crops such as grapes and citrus or emerging crops such as almonds.Poor walnut tree health usually associated with wrong rootstock selection, or growth in areas with inadequate topsoil depth, have inculcated a strong traditional resistance amongst growers and horticultural developers to walnuts as a viable alternative crop for the region.Recent trials comparing Juglans hindsii, a traditional rootstock for the area, with a new selection of Paradox rootstock, have shown the Paradox entity significantly outperforms J.hindsii in terms of scion growth in the first year.The Paradox hybrid has also been shown to grow vigorously in soils with shallow topsoil depth above calcareous B horizon subsoils.This suitability of the Paradox hybrid to calcareous soils provides the potential to expand the walnut industry into parts of the Murray Lowland Province characterized by Calcarosol soils with as little as 30 cm topsoil.
calcareous soils Australia Juglans regia Juglans hindsii Juglans nigra Paradox
I.R.K.Sluiter L.McKenzie J.R.Mitchell
Federation University Australia,Ballarat,Victoria,Australia Growtek P/L,Koraleigh,New South Wales,Australia Vinescience P/L,Red Cliffs,Victoria,Australia
国际会议
The 7th International Walnut Symposium(第七届世界核桃大会)
山西汾阳
英文
105-111
2013-07-20（万方平台首次上网日期，不代表论文的发表时间）