Nitrogen losses from grass ley after slurry application surface broadcasting vs. injection

Nitrogen losses from grass ley after slurry application – surface broadcasting vs. injection

While many small dairy farms have shut down milk production, the livestock density and number of livestock farms have increased in certain regions in western and central Finland during recent decades. At present, most dairy farms prefer almost continuous grass cultivation to crop rotation with cereals and grasses. Consequently, slurry is spread onto fields of silage grass instead of using earli...

Seasonal persistence of faecal indicator organisms in soil following dairy slurry application to land by surface broadcasting and shallow injection

Dairy farming generates large volumes of liquid manure (slurry), which is ultimately recycled to agricultural land as a valuable source of plant nutrients. Different methods of slurry application to land exist; some spread the slurry to the sward surface whereas others deliver the slurry under the sward and into the soil, thus helping to reduce greenhouse gas (GHG) emissions from agriculture. T...

Ammonia emissions from pig and cattle slurry in the field and utilization of slurry nitrogen in crop production Doctoral Dissertation

Volatilization of ammonia (NH3) from animal manure is a major pathway for nitrogen (N) losses that cause eutrophication, acidification, and other environmental hazards. In this study, the effect of alternative techniques of manure treatment (aeration, separation, addition of peat) and application (broadcast spreading, band spreading, injection, incorporation by harrowing) on NH3 emissions in th...

Aqueous And Gaseous Nitrogen Losses Induced By Fertilizer Application

Slurry injection to optimize nutrient use efficiency in maize: Soil nitrogen dynamics and plant nutrient status

Slurry injection below maize seeds is a rather new application technique developed to improve the nitrogen use efficiency of liquid organic manure. To enable the characterization of the spatial and temporal soil mineral nitrogen (SMN) dynamics after slurry injection the present study aims to develop an appropriate soil sampling strategy. Three consecutive experiments were conducted. The first t...