Top tips for switching from solid to liquid fertiliser
PARTS of the machinery trade are reporting increasing interest in using liquid rather than solid fertilisers, so what should farmers bear in mind when considering the switch?
We asked Darren Glegg, Yara’s business manager for liquid and foliar products on what’s the best approach and other experts attending the forthcoming Midlands Machinery Show on how to apply it?
“Farm infrastructure will play a part in whether to go for solid or liquid fertiliser as well as labour considerations,” he said.
“It is about efficiency. Machinery has got bigger. When farmers are making such a major capital investment, they want to get the most out of it and be able to apply liquid fertiliser as well as ag chem.
“With a sprayer, just one person is needed, whereas with solid fertiliser an additional person is needed to bring bags to the field.”
“While some farms may have shed space for a fertiliser spreader, liquid fertiliser tanks may be more convenient for others. It is about weighing up the best system for your farm.
A key benefit of using liquid fertilisers is being able to apply fertiliser more accurately at field edges, added Mr Glegg. “This can be up to 20% of the field in some cases.”
With some fertiliser manufacturers finding it difficult to source product, he said Yara was carrying on as normal. “Our fertiliser is produced in Holland and Germany. We are also well placed to advise customers on application equipment, rates, timings and agronomy.”
Visitors to the Midlands Machinery Show, on November 16 and 17, will be able to see a wide range of sprayers and nozzle options on show and speak to experts about the best choice for their farm.
Applying liquid fertiliser is not like applying plant protection products. It is applied with a spray nozzle producing a much larger droplet size, which is less affected by wind and weather conditions,” pointed out Chandlers managing director, Gavin Pell.
“This means it can be applied in a wider range of weather conditions than would be possible with granular fertiliser. If soil is bone dry, with solid fertiliser you have to wait until it rains before it is taken up.
“You can also dose more accurately with liquid fertiliser and there is less likelihood of leaching, meaning less fertiliser is potentially wasted.”
Even farmers planning to continue using solid fertilisers but who are buying a new crop sprayer want it to have the ability to apply liquid fertiliser, pointed out Cliff Buck, technical sales manager at Knight Farm Machinery. “This means that somewhere in the back of their mind they are thinking about liquid fertiliser as an option for the future.”
Most crop sprayers can apply liquid fertilisers – however, growers should be aware that the liquid is abrasive and, if not cared for, the sprayer will deteriorate faster than when only used for ag chem, added Mr Buck.
“It needs to be thoroughly washed down, ideally every time fertiliser is applied, paying particular attention to boom joints, hydraulic cylinders and areas where liquid fertiliser can sit. It is also important to fit the correct nozzles. Either multi stream nozzles or dribble bars are popular choices,” he explained.
“Another consideration is the density of the liquid fertiliser when using an auto application rate control system on the sprayer. If the fertiliser density is anything other than one (water), the control system needs to be adjusted.”
Many growers are considering a fast fill pump to increase the speed of filling the sprayer, he added. “It is also important to have the ability to pump out any remaining sprayer contents into a storage tank.”
For farmers switching to liquid fertilisers, application accuracy is essential and Billericay Farm Services, specialises in applicators. “Our liquid fertiliser applicator selection allows for consistency, accuracy and enables you to achieve professional and productive results, no matter what the task,” said director, Simon Nichols.
So what equipment will visitors to the Midlands Machinery Show be able to see?
Chandlers will be showcasing broadcasters from KRM Bogballe, mounted sprayers from Berthoud, trailed sprayers from Chafer and selfpropelled sprayers from Fendt, including the Rogator 655, said Mr Pell. There will also be a considerable line-up of other equipment from a wide variety of manufacturers, with over 210 trade stands already booked, an increase of 20% on previous years.
Visitors can claim two NRosO points and two BASIS points for attendance at the show.
■ For more information or to register for free entry to the Midlands Machinery Show, visit www.midlandsmachineryshow.com/.