perennial grasses several times through the growing season; grasslands pose less of a risk of leaching or runoff Efficient use of slurry manure nutrients for feeding forage crops losses, because the ground is always covered; and there on dairy farms is important. The main objective of this study was to compare the response of tall fescue (Festuca arundinacea Schreb.)is less risk of pathogenic contamination of grasses than to N in dairy (Bos taurus ) slurry manure applied with a splash plate edible crops.(broadcasting) or a drag-shoe (surface banding) applicator, and broad-By applying manure to grassland over the growing cast mineral fertilizer, in spring, summer, and autumn. The effects of season, storage facilities can be emptied before autumn, delayed application and band spacing were also examined. The study so that less storage capacity is required and the need was conducted from 1994 to 1996 in southwestern British Columbia to dispose of the manure on bare land in the autumn on a Monroe series soil described as a Eutrochrept (eluviated eutric is less likely. Brunisol) of moderate to good drainage. Dairy slurry was applied atUnfortunately, it has been difficult for farmers to two rates (50 and 100 kg ha Ϫ1 of NH 3 -N) with splash plate or drageffectively utilize slurry rather than fertilizer on grassshoe applicators at the beginning of growth (early) or 7 to 10 d later (late). Ammonium nitrate fertilizer was broadcast at 0 to 125 kg N land as the primary source of N (Whitehead, 1995). ha Ϫ1 in 25-kg increments (only 50 and 100 kg ha Ϫ1 rates on the lateWith commonly available slurry broadcasting equipdate). Yield response to manure banded with the drag-shoe applicator ment (splash plate applicators), spreading must be done was similar to fertilizer applied at equivalent rates of mineral N. Yield before there is any growth in spring or soon after harresponse to splash-plate-applied manure was generally 0.5 to 1.0 Mg vest, to avoid fouling or burning the regrowth. Uniform ha Ϫ1 lower than to fertilizer in summer and spring, but similar in application is difficult to achieve with broadcasters, esautumn. Total N uptake was 15 to 20 kg ha Ϫ1 greater from drag-shoe pecially in windy conditions. Slurry applied with the than from splash-plate applied manure at high N application rate in conventional splash plate applicator may lose up to 80% spring and summer; differences in autumn were smaller. Treatment
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