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Westfalia launches two new avocado rootstocks from its breeding and selection programme

Following more than two decades of thorough testing as part of its rootstock breeding and screening programme, the Westfalia Fruit Group is excited to be releasing two new avocado rootstocks for commercial sale under the Merensky name.

Trees of these new avocado rootstocks are being trademarked under the names of Leola™ (Merensky 6) and Zerala™ (Merensky 5). These novel rootstocks yield healthier trees and better-producing orchards under challenging growing conditions than do other industry-standard rootstocks, as confirmed in recent trials. The rootstocks have been released in the USA and South Africa, with commercial roll-out to be expanded as further trials deliver similarly positive results.

For almost 40 years, Westfalia’s R&D division, Westfalia Technological Services, has been researching disease-tolerant clonal rootstocks to develop selections with superior tree health and yields. Successful testing and development over a 20-year period has led to the Group’s existing avocado rootstocks Latas® (Merensky 1) and Dusa® (Merensky 2) enjoying increasing success, with the help and support of loyal licensees and specifically Brokaw Nursery from Ventura, California, and its affiliates across the Spanish-speaking world. These rootstocks offer high root-rot tolerance and higher yields, with Dusa® also offering some salinity tolerance. To date, Dusa® has been the top seller among clonally propagated rootstocks worldwide. Protected under Plant Breeders’ Rights, it is grown successfully in Australia, New Zealand, Spain, Israel, the USA, South America and South Africa. More than 1.5 million Dusa® trees are sold annually in the commercial market.

Now, with its launch of Leola™ and Zerala™, Westfalia can present growers with higher-yielding rootstocks developed to suit a range of growing conditions around the world. This supports the Group’s reputation as ‘Avocado Experts’ and as a pioneer in the avocado industry and enhances Westfalia’s ability to plant sustainable and productive orchards of its own.

Tested under a range of conditions
The new rootstocks were evaluated under a broad range of production conditions in various countries. Demonstrating tolerance to Phytophthora cinnamomi root-rot under heavy infection pressure, Leola™ was shown to outperform Duke 7 – the previous industry-standard rootstock – in initial productivity screening, and even outperformed Dusa® in recent trials. In addition to being selected for its high standard of productivity, Zerala™ is Westfalia’s rootstock of choice for growing in areas facing salinity challenges. Both new rootstocks will continue to undergo large-scale monitored plantings and trials.

The launch of these rootstocks is of great significance to the global avocado industry, making greater yields possible under a range of challenging growing conditions and allowing larger volumes of fruit to be produced and marketed across the globe, to meet rising consumer demand.

For more information:
Theo Bekker
Westfalia 
Email: theob@westfaliafruit.co.za 
www.westfaliafruit.com 


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