This year’s complex category in the Farm Inventions Competition offered up some high-tech items that required a serious level of planning and workmanship. Our contenders include a brace of drilling rigs built on a shoestring budget and a cheap-to-run bale wrapper trailer. See the best inventions in the other categories Simple category Intermediate category Andrew Webster’s rotor spike PCN mixer Andrew Webster of Ormskirk, Lancashire set out to find a more reliable way of applying potato cyst nematode-smashing chemicals. He […]