About half of the total fertiliser put on farmland each year is applied by a spreader similar to this. A bulk load of fertiliser is carried in a bin on the back of the truck, and a spinner spreads it as the truck drives along. Many contractors now use global positioning technology to help them achieve even spacing across each paddock.
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Archives New Zealand - Te Rua Mahara o te Kāwanatanga
Reference: AANR 6325 W3302/10
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