Written by cpm
Download PDF Choosing a variable rate sprayer can be something of a minefield – every firm seems to have its own technology, so it can be hard to compare like with like. CPM takes a look at what’s on the market. It’s a lot better to have automatic control. By Olivia Cooper and Charlotte Cunningham Variable rate spraying technology is advancing all the time, improving accuracy, efficiency, and thereby cost control. But with higher spec equipment comes a higher capital outlay, so it’s important to work out exactly what you need and what is superfluous to demand. At the basic level, it’s important to have accurate tramlines, as that is the foundation of all precise applications, says John Handbury, managing director of JS Industries. Automated steering and GPS positioning is extremely useful here, and when applying pre-emergence sprays as there is no visible crop. Chafer has introduced PWM nozzle control on the trailed and self-propelled ranges Other fundamental considerations include: Tank size and boom width – which will depend on the farm hectarage, topography, field size and access. Boom levelling – which comes down to the software and speed of reaction. You want it to react quickly but smoothly.…
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