Points to consider:
- Best practice should always be followed when applying manures, fertilisers and agrochemicals
- Organic manures should not be applied to land within 12 months of pipe or mole drainage installation
- Organic manures should not be applied to drained land when soils are wet and drains are running
- Organic manures should not be stored within 10 metres of a field drain
To find out more have a look at the ADDB Field Drainage Guide which looks at the principles, installation and maintenance issues.
http://cereals.ahdb.org.uk/media/725158/g68-ahdb-field-drainage-guide.pdf
