09/09/2022
Welcome change to slurry spreading rules!
The Association of Farm & Forestry Contractors in Ireland (FCI), the national association representing Agricultural/Farm & Forestry Contractors in Ireland, has welcomed the new Department of Agriculture, Food, and the Marine’s (DAFM’s), new slurry spreading extension guidelines which are to be based on the Moorepark St. Gilles Grass Growth Model. These guidelines have the potential to allow for slurry spreading on farms at dates later than the new earlier closing deadlines of October 8, 2022, and October 1, 2023.
While the Association is aware that the bringing forward of the slurry spreading closed period by one week to October 8 this year, will further reduce the working year for Farm Contractors who provide slurry spreading services, the adoption of scientific criteria over calendar dates in assessing conditions for slurry spreading exemptions during the closed period, is welcome.
Over the past three years, FCI has campaigned for changes to the existing calendar-based closed system and has called for the adoption of a more scientific approach based on grass growth and weather factors, which have been proven to enhance the ability of nutrient uptake. “The adoption of the Moorepark St. Gilles Grass Growth Model to assess the ability of the grass to use the slurry nutrients based on actual growing conditions, coupled with weather forecasts, is a long awaited and welcome change in approach by DAFM,” said John Hughes, National Chair, Association of Farm & Forestry Contractors in Ireland.
For slurry spreading to be allowed within the closed period using the Moorepark St. Gilles Grass Growth model which will give a measure of sufficient grass growth for nutrient uptake and when no heavy rain is forecast. The Moorepark St. Gilles Grass Growth model system measures existing grass growth to include a nitrogen (N) component and a soil water component. The model is effective in grazing and cutting scenarios. Inputs include weather data, grazing management decisions and N fertiliser application. Outputs include daily grass growth, soil mineral N content, grass N uptake, grass N content and NO3− leaching.
The Association has also called for great emphasis for funding for slurry storage to allow the movement of more animal slurry for storage on tillage farms. “This would enhance use of slurry as a replacement fertilizer with additional organic matter benefits,” said John Hughes.