A DPI scientist is investigating how netting works to reduce sun damage on fruit in the Goulburn Valley this month.January 22, 2013 4:06am
A DPI scientist is investigating how netting works to reduce sun damage on fruit in the Goulburn Valley this month.
Tatura-based Dr Lexie McClymont will closely monitor weather conditions, fruit temperatures and sunburn damage in netted and un-netted Royal Gala apple blocks in the Goulburn Valley.
Dr McClymont said shade netting reduced sun damage, even though the air temperature might not be reduced under the netting.
Direct solar radiation plays a major role in causing sunburn damage through a combination of increasing apple skin temperatures and ultra-violet radiation.
DPI aims to have a better understanding of how the different components of weather interact to cause sun damage. With this information it will be able to give growers better predictions and warnings of sun damage on fruit for current and future climate scenarios.
This will help prevent some of the losses that occur each year due to sun-damaged apples and pears.
Fruit are often discarded because of sun damage varying from discoloration to full-blown sunburn.
Past reports from Australian and overseas pack-houses suggest 10 per cent of apples are rejected in a typical season. Losses are much greater when field rejections are included and in seasons that are warmer than normal. Growers in Australia estimate losses to vary from six to 30 per cent.
Some growers have invested heavily in practices, products and infrastructure to reduce their losses. These include shade netting, evaporative cooling and spray-on products.
Shade netting has been a popular option for sun and hail protection, despite its high initial capital cost of about $40
Existing netted orchards in the Goulburn Valley offer a good opportunity to learn more about how to prevent sun damage on fruit.
The DPI and Horticulture Australia Ltd are co-operating with local orchardists in this project as part of the program for understanding apple and pear production systems in a changing climate.
Practical information for growers and service providers on Sun Protection for Fruit has been summarised by DPI in a 40-page manual and in an information note which is freely available in electronic format by phoning Fruit Growers Victoria on 5825
The late Margaret 'Dharrul' Wirrpanda has joined Mooroopna's Alf 'Uncle Boydie' Turner as an inductee this year into the Victorian Indigenous Honour Roll.
Yarrawonga Football Netball Club has confirmed the appointment of Brendan Fevola as co-coach for season 2015.
Goulburn Valley Fins and Fenders Car Club is getting ready to host its second annual Show and Shine event at Tatura Racecourse on Saturday, October 18.
Residents are being warned they could face severe penalties if out of control burn-offs damaged someone else’s property.
The Nanneella hall and recreation reserve committee is inviting everyone to join its clearance sale on October 25.
National Party ticket up for grabs
Developer of the Elloura estate wants to build another road to Buckley Park among other changes.
Terry Hogan has stood down as Mayor of Jerilderie Shire due to an ongoing battle with cancer.
Heathcote Community House staff are encouraging people to send a postcard to show their support.
Minister for Local Government and Aboriginal Affairs Tim Bull visits Cobram to assist councils and incumbent MP.
Keen Deni Ute Muster fans rolled into town early for the weekend's event.
The only consistent thing about frost damage in crops was its random nature, a cropping expert told his field day audience at Finley last Friday.
Last week's Coledale poll dorset stud ram sale was the best in the stud's 45-year history.
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