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Whole-farm soil testing saves Taranaki farmer Hayden Lawrence about $15,000 on fertiliser each year.
After beginning soil testing seven years ago, Lawrence has saved close to $90,000 and increased pasture production from 14.5 tonnes per hectare to 18.6T/ha.
He farms in equity partnership with his wife, Alecia, and parents on a 97ha Taranaki property.
The Lawrences milk a maximum of 240 cows on an 85ha milking platform, using their hill country block to graze heifers. They also follow an 18-month cropping rotation that sees paddocks planted into silage, oats, chicory and then into pasture.
The family are trialling a three-year calving programme where cows will be milked for 450 days and calved twice.
Research from Dairy NZ shows additional days of milking could increase milk yield and potentially decrease animal health issues by reducing calving. As part of the trial, they are also growing fodder beet and maize.
Hayden says whole-farm testing is a "no brainer" for the business. On average, it saves $162/ha compared with a blanket fertiliser approach.
These whole-farm soil tests cost $2,500 for Lawrence's 50 paddocks. "We had been spending about $40,000 a year but that's down to about $13,000 a year." he says.
The family use Analytical Research Laboratories (ARL) to analyse their annual soil samples. Farmers can use My Ravensdown to review the results and then order fertiliser and plans.
Based on the results, Lawrence orders fertiliser and plans spreading with Ravensdown joint venture Spreading Sandford, who collect and spread the various mixes.
The whole-farm testing results have not been hugely surprising, but Lawrence says he has noticed how various crops and management programmes affect nutrient levels. It's also been beneficial for knowing when they can mine nutrients and when they need to top them up.
"We were advised that on our Taranaki ash soils, the farm probably wouldn't need large quantities of superphosphate. But after two years we saw sulphur levels start to bottom out. We've easily addressed this by using sulphur mixes combined into our last nitrogen application in autumn and our first nitrogen application in spring." says Lawrence.
DairyNZ has pulled together tactics that will help farmers improve on-farm efficiency and have positive benefits for the environment. These tactics are based on research, data, and lessons from leading farmers.
New Zealand farmers will face higher urea prices this year, mainly on the back of tight global supply and a weak Kiwi dollar.
Ballance Agri-Nutrients is expanding its fixed price offer to help customers manage input costs with greater certainty over the coming season.
Research findings published in Europe support the concept of foliar fertilisation or foliar feeding in improving nitrogen use efficiency (NUE) while maintaining pasture productivity.
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