Monday Shelter To estimate height of a tree: Step 1. Place an upright stake in the ground beside the tree you want to measure ( a sunny day is best) Step 2. (a)measure the height of the stake (b) the length of the shadow cast by the stake (c) The length of the trees shadow Step 3. Multiply the trees shadow by the stake height, then divide by the length of the stakes shadow = the tree height (Tree Shadow * Stake Height)/Stake Shadow = Tree Height Distance of shelter Protected Zone : Height of tree * 10 = distance of protected zone http://www.youtube.com/watch?v=F6fltSqImFM New Cherry development. Posts in ready for complete netting, an example of an artificial shelter. The shelter is quick (though expensive) to construct and works as it should straight out of the box. Maintenance may be an issue with costs and the structure and materials contribute nothing to the environment. an example of native vegetation being used as a shelter…this makes not only an attractive planting it also fosters native birds etc and does the shelter job as required. The new chooks and chook house…media event cluck cluck!
Tuesday Bannockburn Road, spraying with Trevor. Used knapsack to spray herbicide. With the others we covered most of the entire complex. Tractor doing the main orchards and vines.
Wednesday A bit of work experience on a property in Cromwell. Spot sprayed for weeds throughout garden beds etc, trimmed hedge trees and generally cleaned up the extensive gardens.
Thursday Propagation. Spent the day potting up tomato seedlings from seed trays to four pot punnets. All for the October sale.
Friday Blog day
The good oil on the war against junk food
At its peak the fire was so intense it formed a 150-metre-high tornado of whirling heat, flame and smoke. It was January and the owners of Laharum Olive Grove – Deirdre Baum, her husband Richard and their two boys – were on holiday at the beach. Bound on one side by the imposing Mount Difficult Range in Grampians National Park, their 120-hectare property forms part of one of the largest and oldest olive tree estates in Australia, planted by Jacob Friedman in 1943.
The Baums exchanged city life for their relatively small olive tree plot nine years ago and had already endured flood. But this was their first fire. Neighbours updated them as the flames rolled over the hills and swept through their property. There was nothing they could do.
They arrived home to a scene of charred devastation. Fire fighters had saved the house and the newly built restaurant, and the family’s two miniature goats and two alpacas were still alive too (although one had its ears badly singed). But the flames spared only 300 of their 11,000 olive trees.
The worst of the damage happened near the back fence, where the heat tornado ripped through a 15-by-15-tree square of premium slow-growing Verdale olives, celebrated for their low-yielding but high quality fruit.
“It’s incredible what it did to the trees,” recalls Deirdre Baum of the moonscape that greeted her.
“These big old olive trees were just snapped like toothpicks. Some were ripped out of the ground, others looked like they’ve been twisted; some were just completely missing.”
More than six months later a covering of green now hides most of the sandy, ashen soil and the hardy, 71-year-old trees – many of which have received a severe pruning – are already sprouting new growth. Baum is confident they will bear fruit again within five years but this season they were able to make only 700 litres of organic extra virgin olive oil. It will be years before they return to their normal yield of 8000 litres so, at least for now, the restaurant is keeping them alive as a business.
Meanwhile, back in the city, another challenge is looming for Baum and other extra virgin olive oil producers like her. On June 27 the Legislative and Governance Forum on Food Regulation, made up of Commonwealth, state, territory and New Zealand food ministers, announced the official beginning of a new food labelling initiative, known as the Health Star Rating (HSR) system. Similar in look to those energy rating stickers you see on washing machines and fridges, it’s designed to give consumers an accurate picture of what’s inside their breakfast cereal packets and snack bars – specifically, the energy, saturated fat, sugars, sodium and nutrient content. Food is divided into six categories and products are given star ratings out of five for their health and nutritional value (fresh fruit and vegetables are exempt).
Sanitarium and Woolworths were among the first to sign-up to the voluntary five-year scheme, which will be reviewed in 2016.
Health professionals regard it generally as positive news in the fight against obesity and a strike back by regulators against the confusing proliferation of (often dubious) health and nutritional claims made on food packaging.
And, given earlier controversy when the HSR website was abruptly taken down by the Assistant Health Minister Fiona Nash and her then-chief of staff, Alastair Furnival, who Fairfax Media reported had links to the junk food industry, those close to it must be particularly pleased that it’s made it this far.
But when extra virgin olive oil producers ran their product – long associated with the healthy Mediterranean diet – through the HSR calculator many were surprised and alarmed by how low it scored. On par with heavily processed margarine at 3.5, extra virgin olive oil scored half a star worse than canola oil, a much cheaper and highly refined alternative.
Leading the olive oil revolt is Rob McGavin, CEO of Victorian companies Cobram Estate and Boundary Bend, which grows and supplies 65 per cent of the country’s olive oil stocks, making it the largest producer in Australia.
“It just makes me so mad,” says McGavin, who earlier this month wrote to his local MP Andrew Broad after fruitless submissions to the Federal Health Department. “The current system is, in our view, wrongly showing that other oils that are half the price have more stars than extra virgin olive oil. It’s pretty simple, really.”
McGavin says the system doesn’t take into account the health benefits of extracting fats and oils mechanically (by pressing) compared to refining processes, which generally apply heat and chemicals. Also, the system only looks at saturated fat, without taking into account others including trans fat, mono-unsaturated and polyunsaturated fats. This shows a fundamental flaw, he argues, throwing doubt over the system’s credibility as a whole.
“I mean, it just doesn’t pass the smell test.”
Lisa Rowntree, CEO of the Australian Olive Association agrees. “At the very end we support this new Health Star Rating system, we think it’s a good initiative to do something like that but it’s almost like it’s been done too quickly and they haven’t really thought about some of the more complicated areas of health. And I think they really need to take on board what the industry is telling them and revaluate how they’re doing it.”
Today the HSR advisory committee is in Melbourne meeting with Victorian food manufacturers to talk about the roll-out of the labelling system and discuss concerns with what are called “anomalies”. McGavin should probably not hold his breath for change, judging by comments provided this week to The Age from the Federal Department of Health. “The front of pack labelling oversight advisory committee is in the process of developing a mechanism to deal with anomalies,” said a spokeswoman for the Department. “The HSR advisory committee recently considered a submission regarding the treatment of olive oil by the HSR calculator, and again found that the calculator is producing technically accurate results.”
Ultimately, the government wants us to make healthier food choices and the HSR system gives consumers a relatively simple tool for understanding the nutritional value of food products. It should be used in conjunction with the Australian Dietary Guidelines, it argues, “one of the key sources of information for consumers regarding overall nutrition.” Meanwhile, an accompanying social marketing education campaign is also close to being finalised.
At the University of Melbourne, Dr Gyorgy Scrinis, a lecturer in Food and Nutrition Politics and Policy, spends a lot of time closely following the politics of food. He’s the author of Nutritionism: The Science and Politics of Dietary Advice, whose central thesis is that by breaking down food into individual nutrients we narrow and in some cases distort our appreciation of food quality, so even highly processed foods may look healthy depending on their content of “good” or “bad” nutrients. In short, perhaps we can’t see the forest for the trees.
He characterises the current proliferation of health and nutrition logos, claims and counter-claims as a battle between food companies on the one hand, and government regulators and public health experts on the other. Instead of simply disallowing all of food companies’ nutrition and health claims, he says, the HSR system is an attempt by government regulators to balance these claims out with counter-messages indicating the relative healthfulness of foods.
“The goal of providing some sort of qualitative indicator of food quality on the front of the pack is a worthwhile one,” he says. “But these interpretive labelling systems are only as good as the criteria they use to evaluate and rate foods.”
Because the HSR system has a reductive focus on a few nutrients and food components it does create anomalies, he says, noting that some highly processed foods score relatively highly compared with minimally processed foods.
“Margarine is essentially heavily processed vegetable oil with a range of additives, yet scores about the same number of stars as olive oil, which is usually minimally processed. And some high sugar breakfast cereals may score up around 4 stars,” he says. “An alternative would be to include other criteria for determining how a food has been processed, and how that form of processing may have either reduced and degraded, or else enhanced, the nutritional quality of a food product.”
Issues arising from government health labelling systems is not isolated to Australia. In June last year Britain launched a similar “traffic light” health rating system, which labels food red, amber or green depending on their fat, salt and sugar content. The London Telegraph reported that Italy then complained to the European Union over the labelling system’s treatment of several foods it traditionally produces, including Parmesan cheese, salami, prosciutto ham and high-grade olive oil – all receive “high risk” red lights – putting at risk some €200 million (A$286 million) in lost sales). Then, according to an AFP story in March, Italy’s Agriculture Minister Maurizio Martina vowed to use his country’s current turn as EU president to pursue a campaign against the British labelling laws.
“We consider this kind of labelling simplistic and misleading for consumers,” said a spokesman representing Italian food producers. “We remind consumers that there is no such thing as good or bad food, just good or bad diets.”
Lucinda Hancock, an accredited nutritionist and the Victorian executive officer of Nutrition Australia, the country’s peak nutrition education body, says she understands the broad aim of the Health Star Rating but is concerned that the formula doesn’t give as much attention to the positive nutritional value of vitamins, minerals and antioxidants, nor the level of processing an item has undergone.
“There is a lot of evidence that supports the health benefits of extra virgin olive oil,” she says, “and as such it would be good to see extra virgin olive oil achieve a higher star rating.”
A more sanguine view on the HSR system and extra virgin olive oil comes from Alan Barclay, an accredited practising dietitian and spokesman for the Dietitians Association of Australia, the nation’s peak body for dietetic and nutrition professionals.
“It’s a bit of a surprise but there are anomalies in the system … and there will be more,” he says, adding that it’s important to keep everything in perspective. “Nobody’s expecting the Health Star Rating system to be the be-all and end-all to chronic disease prevention or helping slow the tide of obesity, for example. It’s just one simple tool in the toolbox and, generally speaking, we do think it’s a good idea.”
Barclay notes that rather than being built from scratch the HSR system was adapted from the 2013 Nutrition Health and Related Claim legislation, which might explain the anomalies that appear. He also stresses the voluntary nature of the system and that consumers will still be able to check mandatory nutrition information panels. “Lastly, the market research shows, as I think most of us understand, that actually price and taste are the two primary drivers of people’s food-purchasing decisions and health tends to be third on the rung. A lot of people – me included – would much prefer an extra virgin olive oil to a canola oil, for instance, because it has that nice, rich flavour.”
The system may, for the time being, be voluntary but olive oil producers such as Rob McGavin feel compelled to be involved, seeing it as an issue of trust with consumers.
“We’re trusted – Cobram is trusted,” he says. “And if we don’t put it on it means you’re hiding something, in the end. It’s important that they get it right in the fats and oils category – or don’t do it all.”
Back at Laharum Olive Grove, this is the first Deirdre Baum has heard of the HSR system. She seems nonplussed. It will be a few years before their trees are ready to produce enough for a bottling run but supermarkets aren’t really their thing, anyway.
“When we get back to production and we’re in retail we’re in more niche-type stores,” she says, “whether they be organic stores or delicatessens.”
“We also have a big presence in farmers markets and there we’re dealing directly with consumers. That, in my opinion overrides everything because we’re speaking directly with the customer. They know where it’s coming from and, I guess, the benefits of the oil they’re buying.”