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Saturday, 19 May 2018 13:47

Nursery fast lane

Nursery businesses stuck in the slow lane are being encouraged to rethink logistics and transportation to boost profitability, according to Sales Manager of Overland Nurseries, Brent Tallis.

Mouse Control: Practical tips on baiting set-up

Ben White demonstrates options for mouse bait application. Visit https://grdc.com.au/mousecontrol for more information. Mouse baiting with zinc phosphide-coated bait should be conducted as soon as practical after seeding to maximise efficacy and minimise crop damage.

The visual cues of malperforming pastures

Livestock managers need to stop the car, get out and observe their pastures correctly. Windscreen agronomy, aptly termed by webinar presenter and leading pasture agronomist Jim Virgona, just doesn’t cut it!

Going into Goats

Live weight scales Going into Goats presented by MLA.

ACCC should 'enable not inhibit' – RMAC

The Red Meat Advisory Council has criticised the Australian Competition and Consumer Commission's Update Report on the Cattle and Beef Market Study released on May 4. 

Cattle people back live-ex

The Cattle Council of Australia has slammed Labor’s new ‘phase-out’ policy on live sheep exports as reckless and ill-informed.

Cattle industry stonewalls market reforms

The cattle and beef industry has not acted on most of the recommendations made by the ACCC in 2017 to improve the transparency and efficiency of Australian cattle markets, according to a new review released by the ACCC.

Avoid the 'burn': take care with seed and fertiliser placement in dry soil

Northern region grain growers are advised to take extra care with seed and fertiliser placement this year due to the dry sowing conditions.


Dry soils increase the risk of harm to germinating seeds by fertiliser, especially when it is placed too close to the seed or at rates that are too high.Agronomic authority Dr Rob Norton says growers need to be mindful of the soil conditions in their paddocks when applying fertiliser at sowing.
“The dry lead in to winter sowing in 2018 means last year’s strategy might not be safe this year,” says Rob Norton, the director of Norton Agronomic.
Rob Norton, who chairs the Grains Research and Development Corporation’s eXtensionAUS crop nutrition community of practice, encourages growers to use a seed damage calculator, available at goo.gl/NT8vmB, to check how much fertiliser they can apply with seed through the same chute.
The calculator doesn’t address fertiliser placed below or to the side of seed, but Dr Norton says separation of seed and fertiliser at around 3-5 centimetres is usually enough distance to protect the seed.
“The risk of fertiliser damage increases with drier and sandier soils,” Dr Norton says.
“Conditions that cause stress or slow germination prolongs fertiliser-seed contact, and this increases the chance of damage.”
Crop type is another factor, with canola and lentils being more sensitive, while wheat and barley are relatively tolerant.
“The order of sensitivity for crop species can vary for fertiliser type, but in general, the order from most to least sensitive in major grain crops is canola, followed by lentils, peas, oats, wheat and then barley.”
Fertilisers can affect germinating seeds in at least two ways, with the first relating to salt index.
Most fertilisers are salts and as such, too much fertiliser salt can ‘burn’ the seedling or stop seedlings from absorbing water.
Nitrogen and potassium fertilisers tend to have a higher salt index than phosphorus fertilisers. Sulphate forms tend to have lower salt indexes.
Ammonia formation potential is the second consideration.
Dr Norton says free ammonia can be toxic to seed: “Placing urea-containing fertilisers in-furrow is risky because they produce ammonia.
“A fertiliser with polymer coatings or urease inhibitors may slow the rate of ammonia production enough to protect seed.
These fertilisers are still considered risky to place near seeds.”In terms of placement, Dr Norton says the safe rate of fertiliser per hectare increases as row space narrows.
“Closer row spacing ‘dilutes’ fertiliser over the length of row.”
Machinery configuration, such as twin chuting systems which separate seed and fertiliser, can assist in protecting the seed.
Fertiliser is placed in bands to the side or below the seed bands, and separation of 3-5 cm is usually enough to protect seed.  
Cowra based Incitec Pivot technical agronomist Jim Laycock says the more scatter there is between seed and fertiliser, the more fertiliser can be safely applied.
“The concept of seed bed utilisation (SBU) addresses this factor. SBU is the proportion of row width occupied by seed row, and with anything less than 10 per cent, particularly in canola you may have a problem,” he says.
“It’s the seed row width divided by the tyne spacing or row width – the wider the seed row for a specific row width, the greater the SBU. As SBU increases so does the safe rate of in-furrow fertilisation.
“Most growers are aware of this, but given the amount of dry seeding happening, it can be worthwhile double checking your SBU levels.”
Tables for fertiliser/crop combination thresholds are available on the International Plant Nutrition Institute website at http://anz.ipni.net/article/ANZ-3074.
Rob Norton says the seed damage calculator includes several liquid fertilisers.
“As a general rule, use the same maximum nitrogen or phosphorus rates as for solid products, based on nutrient concentration.
“Treat urea/ammonium nitrate like urea. Treat ammoniated phosphoric acid the same as MAP,” he says.
More information on seed and fertiliser placement in dry soils is available on the eXtensionAus website at goo.gl/ZuYKPJ.


Weed-beating wheat one step closer

Growers are one step closer to accessing wheat varieties that can compete better against weeds, particularly herbicide resistant annual ryegrass. 

Farmers Exchange

"It’s about building a place where farmers can help other farmers at a time that suits them, no matter where they live across Australia." The Farm Tables's Airlie Trescowthick at the launch of the Farmer Exchange in Holbrook NSW. The Farmer Exchange is one of the four key aspects of the Farm Table, it is a simple, yet vital solution for the agriculture industry to enable everyone to connect, grow and transfer knowledge. The Farmer Exchange will be a safe, friendly and dedicated space for farmers to connect, ask questions and share information. It will be easy to access and use from your phone, tablet or computer. The Farmer Exchange has been made possible thanks to the contribution from the Farming Together Program.
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