Ploughing will bury parasites and has been the conventional way of reseeding.
Bury trash and avoid going too deep in order to avoid the fertile top layer of soil being buried. Although expensive, this method provides a good seedbed. Sowing with the one pass is also common and avoids bringing up unwanted stones.
Minimum cultivation involves the cultivation of a shallow seedbed through the use of a power-harrow, rotavator or similar type of machine. For good results it is important to have low levels of trash and a compact seedbed through rolling.
Direct seeding involves the use of a direct drilling machine which may use a tine or disc to cut a slit in the soil onto which the seed is dropped. To help this process the existing sward should be cut as bare as possible to give the new seeds a chance to germinate and establish.
Slurry Seeding for this system conditions should be the same as direct drilling a bare sward. Generally grass seeds should be covered with 2,000-3,000 gallons of slurry per acre.
When using a minimum cultivation technique, it is a good policy to apply one tonne of lime/ac to counteract the acidity that develops when the old sods rot. Teagasc advice is to produce a fine firm seed bed and roll it before and after sowing.
Fertiliser and lime should be applied according to soil test results and harrowed in before sowing the seed. Nitrogen should be withheld until the crop is established to avoid encouraging weed growth. Once the seedlings emerge, keep a close eye for damage caused by frit fly, slugs, etc Around five to eight weeks post-germination, spray fields to eliminate broadleaved weeds that have germinated and before they develop root reserves. If there is clover in the seed mix, the choice of sprays is limited so check with your adviser.
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