Merseyside, UK grower Olly Harrison talks about his second, summer, barley crop, minimal inputs, residue management and more in a 20-acre sandy field. The No-Till Passport series is brought to you by Martin Industries.

While the wide use of cover crops in rotations with corn in the last decade has resulted in reductions in nutrient pollution and sedimentation, the introduction of cover crops has muddled growers' decision-making regarding how much nitrogen fertilizer to apply to meet their cash crop demands. Researchers at Penn State's College of Agricultural Sciences say they have developed a new decision-support tool that credits nitrogen mineralization from cover crops and soil organic matter.