Thanks to the college’s status as part of the Institute of Technology we have already been working to apply inputs more precisely and improve our soil health to reduce our reliance on carbon intensive inorganic fertilisers. This approach is even more relevant in the context of current challenges, as the rising price of fertilisers means there is a significant financial impact to our return on investment as well as the environment. However, the aim to produce food more sustainably, shouldn’t mean compromising on output. As, farmers we are responsible for feeding the nation and recent events have shone a light on global food security. Even our small part of East Yorkshire plays a part in world food production.
So, this week we have been out applying some enhanced urea fertiliser with our GPS steered fully variable rate and weigh cell fertiliser spreader, working to variable rate maps produced from satellite imagery. We use satellite images to assess the condition of crops, which our farm management system then uses to determine which parts of the field require more fertiliser and which need less. This high-tech approach enables us to be highly controlled in the application of the fertiliser minimising waste, making it more cost effective for the farm and reducing the amount of fertiliser being applied to the land to lessen any impact on the environment.
This information is then translated into a prescription map of the field, indicating where more or less of the fertiliser should be applied. You can see an image of the prescription map to the right, with the darker areas representing where more density of fertiliser is required. The map is then loaded on to our cloud system so it can be accessed from the terminal in the tractor cab. The actual application of the fertiliser is also controlled from here.
As the tractor travels across the field, the fertiliser spreader is constantly monitoring the weight of product in the spreader, the application width and forward speed to control the amount of product being applied. The rate of application is dictated by the GPS map, with the system continuously communicating with the spreader to determine exactly how much to apply in that specific part of the field.
This precision application, that is entirely controlled by technology means we can get the very best from the land to maximise our crop output whilst also minimising our environmental impact. Although, with the tractor even steering itself, it leaves me to ponder where things might be this time next year or what tomorrows Wordle might be…
James Richardson
Farm Manager
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