The maintenance of soil pH is critical for agronomic performance and environmental sustainability due to its direct effect on nutrient availability. Nutrient management planning is therefore an integral part of the nutrient use efficiency on farm.
The application of lime is a key component of nutrient management planning. The usage of lime has declined in recent decades although sales have stabilised in recent years. There is ongoing research, advisory emphasis and industry promotion on the importance and benefits of lime application to our soils and this has helped to raise awareness and promote usage amongst farmers.
An interim review of the Nitrates Derogation was carried out in 2019, following which farmers in derogation must now put in place a farm scale liming programme from 2020, which provides an opportunity for these farmers to improve efficiencies and to reduce their environmental footprint. A review of Ireland Nitrates Action will be conducted this year whereby nutrient management planning will be reviewed.
In many instances, the improvements in fertiliser efficiency resulting from the judicious application of lime may reduce input costs on farms and improve profitability.