When Oxfordshire farmers Alan and Richard Smith more than doubled their farming area two years ago they opted for an 11-year-old Challenger tractor to handle all cultivation and drilling duties in a bid to cut costs. Having already lined up a 5m Simba SL, 5m Vaderstad Carrier and 6m Vaderstad Rapid drill, they reckoned they’d need at least 300hp to pull them through their heavy clay ground. See also: Giant 8,000-litre sprayer ups Yorkshire grower’s work rate Top of the initial […]