Permitted pig farms are reminded that they must complete retrospective nitrogen and phosphorus reporting for 2025 by the end of February. If you’re a permit holder, you can use one of the Environment Agency’s mass balance calculators to work out how much nitrogen and phosphorus were excreted from your farm last year. Zanita Markham, AHDB’s sustainability and engagement manager (pork), said: “The Environment Agency has considered producer feedback from the previous year’s reporting window and has updated the calculators. “They’ve also recorded video tutorials to improve reporting accuracy across different systems.” To use the calculators, you’ll need some key details,…