Effects of herbage composition and supplement feeding on the excretion of nitrogen in dung and urine by grazing dairy cows

Abstract

Invited papers -- Value of animal manures: changes in perception -- Effects of herbage composition and supplement feeding on the excretion of nitrogen in dung and urine by grazing dairy cows -- Manure as a source of nitrogen and phosphorus in soils -- Utilization of nitrogen from injected and surface-spread cattle slurry applied to grassland -- The influence of different processing methods for slurry upon its fertiliser value on grassland -- Utilisation of phosphorus and potassium from animal manures on grassland and forage crops -- Distribution of excreted nitrogen by grazing cattle and its effects on sward quality, herbage production and utilization -- Negative effects of animal manure on grassland due to surface spreading and injection -- Cattle slurry and farmyard manure as fertilizers for forage maize -- Utilization of nitrogen from slurry applied to fodder crops. Research report from the Nordic countries, Denmark, Finland and Sweden -- Extent, effects and tackling of a regional manure surplus: a case-study for a Dutch region -- Nitrogen losses from animal manures: from grazed pastures and from applied slurry -- Phosphorus and heavy metals: accumulation and consequences -- The use of additives in livestock slurries to improve their flow properties, conserve nitrogen and reduce odours -- Economic aspects of the use of animal manures -- The future of animal manures as fertilizer or waste -- Short communications -- Utilization of stored, aerated or anaerobically digested dairy cattle and pig slurries on sown grassland -- Utilization of nitrogen from slurry applied to permanent grassland -- The effectiveness of high doses of cattle slurry as pasture fertilizer in a submontane region -- Yield of hay from grassland treated with mineral fertilizers and slurry -- Yields from swards of varying botanical composition fertilized with cattle slurry -- Mid-season application of organic manures -- a waste of resources? -- Long term effects of slurry on grassland -- The utilization of slurry on light land -- Effects of organic fertilizer application on hay meadow quality in the French Northern Alps -- The effect of regular application of cattle slurry on grassland during the growing season on grass yield and daily milk production -- Trials on slurry application techniques for grassland -- Injector design for minimum grass sward damage -- Investigations of the fertilizer value of sheep excrements left on pasture -- The characterization of cattle slurry and the response of a range of crop plants to slurry application -- Scorching of Lolium perenne caused by cattle slurry -- The effect of cattle slurry on clover in grass/clover swards -- Factors controlling vegetation dynamics in hay meadows under high levels of organic fertilizer in the French Northern Alps -- Effect of cattle dung on the spread of couch grass (Elymus repens L.) in intensive grassland -- Comparative responses to applied fertilizer phosphorus on manured and unmanured soils -- Effect of animal manure on phosphorus and potassium content of herbage -- Utilization of potassium excreted by grazing cattle -- The effect of cattle slurry on the mineral content of pastures and blood serum in dairy cows -- Ammonia volatilization from urine patches in grassland -- Limitations for slurry application to peat grassland -- Effect of treated pig slurry on herbage and groundwater quality -- Nitrate in soil water at different depths during the growing season on permanent pasture (comparison of mineral fertilizer and liquid manure) -- The effect of a nitrification inhibitor on the utilization of nitrogen by grass from injected and surface-applied pig slurry -- The influence of ground superphosphate on the pH value and the ammonia release from slurry -- Separation of pig slurry by sedimentation.