KZN Study Group Report

SAMAC study groups were successfully held in KZN on the 21st of February at Tadpoles farm (near Stanger) and on the 22nd of February at Broadmore farm in Port Edward. Both days were well attended by enthusiastic macadamia growers despite the heavy rains that persisted on both days. The focus of the study groups was on ‘Harvesting Practices’. As the macadamia nuts are maturing on the tree and harvesting about to take place soon, it was a relevant topic of discussion for this study group.

The speakers were absolutely phenomenon and graced us with their expert knowledge. They included Patrick Lennon from Plan-A-Head, Alwyn du Preez (Golden Macadamias), Juan Winters from Source, Lindsay Tredgold and Philip Lee (CompleteLee Nuts Consulting).

Plan-A-Head presented their macadamia management software and gave an impressive live demonstration of their infield weighing device. Juan Winters discussed the KZN benchmarking statistics with the growers and Alwyn du Preez gave a wonderful insight on using Ethapon sprays to harvest macadamia nuts.

At the north coast study group Lindsay Tredgold gave a well-rounded talk on ‘The fertilisation of macadamias”. He emphasised using the correct application rates of nutrients (N P K) at the different phenological stages of tree as well as at the right tree age. Philip Lee gave us a brilliant overview of the macadamia industry and also presented some interesting facts and figures on different macadamia varieties.

In addition, at the south coast study group, growers had an interesting discussion on “Harvest costings” which was chaired by Quentin Elliot. Overall the study groups went very well. A special word of thanks to our sponsors Plan-A-Head for sponsoring the meetings and to Walter Klar (Tadpoles Farm) and Gunter Wichmann (Broadmore Farm) for hosting us.


SAMAC onttrek vanaf Subtrop – RSG Landbou

Barry Christie, bedryfsbestuurder van Suider-Afrikaanse Makadamia Kwekersvereniging (SAMAC), deel inligting oor SAMAC se onttrekking van Subtrop.

Lees ‘n verdere artikel oor die ontrekking:


Makadamia Beskermingsprogram – RSG Landbou

‘n Nuwe navorsingsprogram, die Makadamia Beskermingsprogram (The Macadamia Protection Programme (MaPP)) is onlangs bekendgestel. Dr Gerda Fourie, leier van die program, en Barry Christie, bedryfsbestuurder vir makadamia by Subtrop, praat met RSG-luisteraars hieroor.



Download (PDF, 216KB)

Luister na ‘n onderhoud oor die program:

Photos of the Event:


South African Macadamia Crop – Media Release – May 2017


The Southern African Macadamia Growers’ Association has conducted a round of data collection from approximately 80% of the registered handlers representing approximately 95% of the macadamia industry’s total production volume. The updated forecast is 41 430 tons of nut-in shell (1.5% kernel moisture content), which is slightly lower than the previous forecast of 42 000 tons. It is suspected that many new plantings will come into production for the first time, resulting in a slight increase in production from 2016. The macadamia industry is still suffering the effects of a severe drought that lead to a crop of 38 000 tons in 2016, compared to 46 000 tons that were produced in 2015. Mpumalanga remains the largest production region with 51% of the forecasted volumes predicted to come from this province, followed by Limpopo (26%) and KwaZulu-Natal (21%). The remaining 3% of the crop is expected to come from other regions such as the Eastern and Western Cape Provinces. An updated forecast will be done during June 2017.

New data has also been received from macadamia nurseries on their 2016 tree sales volumes. The new data, received from approximately 90% of the nurseries and representing approximately 95% of the industry, shows that 1 132 110 macadamia trees were sold in South Africa during 2016. This is the equivalent of 3 538 hectares at a planting density of 320 trees per hectare. ‘Beaumont’ remains the most-widely planted cultivar, comprising 49% of the total sales, followed by A4 (22%) and 816 (16%). Mpumalanga remains the province with the most new plantings, absorbing 49% of the total trees produced, followed by KwaZulu-Natal (33%), Limpopo Province (10%), Western Cape (3%) and other destinations (5%). In 2016 it was reported that more than 70% of trees were sold in Mpumalanga during 2015. It is evident that the growth in new plantings in KwaZulu-Natal is on the increase and it is suspected that this will be the future.

Issued by the Southern African Macadamia Growers’ Association (SAMAC)

29 May 2017

Contact: Barry Christie

Tel: +27 73 084 1772



In a recent article by Julie Delahaye for the it was revealed which foods are classified as the superfood for 2017.

“The superfoods set to take 2017 by storm have been revealed! This year sees favourites including avocado oil and macadamia nuts topping the list, as well as unexpected new entries including insects and bone broth. With many of us looking for easy, healthy swaps to make in our diets, there are great alternatives on offer including black bean pasta or buckwheat noodles for delicious and nutritional alternatives to the classics” (Delahaye 2017).

In this article a reference was made to where the list of superfoods can be found.

To read the whole article, please go to:



Delahaye J 2017.  The Superfoods of 2017 Revealed.  Online Article



Below is an email from the Scientific and Technical Projects Manager at the International Nut and Dried Fruit Council, Irene Gironès regarding a call for proposals as well as project guidelines on health research on macadamias.

Dear Sir/Madam,

I am pleased to inform you that the macadamia community just launched a new Call for Research Projects that may contribute to enhance the understanding of the health effects of macadamia nut consumption, and we are inviting researchers to submit project proposals.

Research priorities: Comparing the effect of a macadamias enriched diet vs. a control diet on insulin resistance/secretion, lipid profile (total cholesterol, LDL cholesterol, HDL cholesterol and triglycerides), and other emergent cardiovascular risk factors, e.g. inflammation, oxidative stress markers, etc. including the evaluation of the effects of macadamia nut consumption on adiposity.

200,000 EUR is available for the Macadamia Health Research. Applications due by 28 February 2017.

The Guidelines and the Application Form are available online at

We would very much appreciate if you could share the news with researchers, universities and research institutions in your country.

Should you need any further information, please do let me know.

Thank you and Best regards,

Irene Gironès

Scientific and Technical Projects Manager


International Nut and Dried Fruit Council

Carrer de la Fruita Seca, 4
Polígon Tecnoparc

43204 REUS, Spain

Tel.: +34 977 331 416

Fax: +34 977 315 028


Disease Alert: Husk Rot

Husk rot of macadamia is not a new disease, and especially not new in South Africa. However, our members should be aware that the disease is becoming more widespread. This was anticipated, since macadamia is a relatively new crop to South Africa. It can therefore be predicted that the disease will become more prevalent and have greater economic impacts in the near future. Husk rot is caused by several fungal species, amongst others Colletotrichum gloeosporioides and Phomopsis spp. It can also be predicted that new, possibly even undescribed diseases will be seen in the future. Make sure that you scout your orchards on a regular basis and to control the disease when necessary. Please note that husk rot is not to be confused with husk spot, which is caused by a different pathogen (Pseudocercospora macadamiae). Control of the pathogen includes cultural and chemical methods. Visit the members’ section of the SAMAC website for a list of registered chemicals. Always follow label instructions and only spray registered products. A short article on the subject also appeared in Vol 15 of the Subtrop Journal in 2016 (CLICK HERE TO VIEW THE ARTICLE). Curative control might not be achievable, but further spread of pathogens should be avoided. Below are pictures of what the symptoms may look like, depending on the stage of development of the disease and/or the nut.



Subtrop group report-back

Dear SAMAC Members

SAAGA and SAMAC partnered with Ndalo Media and Old Mutual in September to host a high end memorable event , in Sandton to promote avos and macadamia nuts.

The objective of the event was to promote eating well and incorporating avos and macadamias into a healthy balanced diet.

The event was held at Virgin Active Alice Lane in Sandton, and sought to educate specially invited media and guests around achieving sound physical, financial health and wellness.

Derek Donkin, provided insights on the local avocado and macadamia industries while registered dietitian, Gaby Burbaitzky, expanded on the health benefits of eating avocados and macadamia nuts.

Geoff Huber, Old Mutual’s medical officer, and Dr Phatho Zondi, president of the South African Sports Medicine Association (SASMA), also addressed guests, which included SAAGA  Chairman Mr Kosie Eloff, SAAGA Director Clive Garett, SAMAC past chairman Carl Henning and CEO of Ndalo Media, Khanyi Dhlomo.

The event was largely followed on twitter #health is wealth.


Download (PDF, 4.05MB)


Levubu Studie Groep Verslag / Study Group Report

Die Levubu makadamia studiegroep bied vele te leer vir nuwe en ou SAMAC lede. By die eerste studiegroep van die jaar, in Januarie, is daar ‘n diefstal kommitee aangestel om teen-diefstal inisiatiewe in Levubu te dryf. Lede is aangemoedig om asseblief heinings en sekuriteit op te skerp. Elke studiegroep maak voorsiening vir ‘n boordbestuur plan en boererate. Die kontak besonderhede vir opleidingskursusse in die opgewing is deurgegee sodat ons produsente hierdie jaar hul werkers kan opskerp met die nodige vaardighede. Borge deel by elke studiegroep nuwe relevante en interessante inligting. In Februarie het ons meer geleer oor al die verskillende makadamia uitskotte. In April is die makadamia snoeipraktyke hersien en ‘n feiteblad uitgedeel, en terugvoer gelewer oor diefstal tegnieke in ons area. In Mei is daar ‘n blaaspootjie feiteblad uitgedeel. September is daar ‘n nuwe projek geloots om die vlakke van Imidachloprid in die blomme, blare en heuning te meet vir die volgende 3 maande, twee keer per maand. Die praktyke om neutboorders te moniteer is bespreek. Terugvoer is ontvang oor die belang van vlêrmuise in ons boorde vir stinkbesie beheer. Barry Christie het terugvoer gelewer oor die kwekery standaarde, uitvoer standaarde en ons nuwe webtuiste. Ons het lekker boeredag gehou in Oktober waar daar ‘n verskeidenheid toebehore-verskaffers demonstrasies gelewer het. Ons bedank elke borg wat betrokke is by die studiegroep, die bestuur en ons boere vir die suksesse tot dusvêr behaal. Na afloop van ons algemen jaarvergadering is ‘n nuwe area komitee verkies, dankie vir elkeen se bereidwilligheid om te help bou aan ons toekoms.

Verslag deur Elsje Joubert.

Old and new SAMAC members benefit from every Levubu / Soutpansberg macadamia study group. At the first study group for the year, in January, a theft committee was appointed to drive anti-theft initiatives in the area. Members were urged to upgrade their fences and on-farm security measures. Every study group provide for “orchard management practices” and “good ideas”. Contact information for training was shared in February so that workers can develop in their necessary skills. Sponsors share relevant and interesting information with the study group. We learnt about unsound kernel characteristics, pruning practices and the latest theft methods. In May a fact sheet on thrips was distributed to all the members in the area. A project to measure the concentration levels of imidacloprid in macadamia leaves, flowers, nuts and uncapped honey in nearby bee hives was launched through the study group. Nut borer monitoring practices, the importance of bats in the orchard, how to do crop forecasts and more about the major stink bugs was shared. Barry Christie provided feedback on the nursery standards, export standards and our website. The farmers’ day in October was a huge success. We thank our sponsors and every grower / service provider for their positive contributions toward the study group. We elected a new area committee for 2017 and look forward to what it holds.

Report by Elsje Joubert

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