2017/08/07 by Mark Shepherd, Bill Carlson, Gina Lucci · 2 citations
Agricultural and Biological Sciences · Chemistry · Environmental Science · #Agronomy #Biology #Chemistry #Environmental science #Forage #Leaching (pedology) #Nitrogen #Pasture #Ruminant Nutrition and Digestive Physiology #Soil Carbon and Nitrogen Dynamics #Soil and Water Nutrient Dynamics #Soil science #Soil water #Urine
paper · pdf · doi:10.1080/00288233.2017.1360367
crossref issued 2017/08/07 · crossref published 2017/08/07 · crossref published-online 2017/08/07 · openalex publication_date 2017/08/07 · crossref created 2017/08/07 · crossref published-print 2017/12/01 · openalex created_date 2025/10/10 · crossref deposited 2026/01/25 · crossref indexed 2026/08/05 · openalex updated_date 2026/08/05
ABSTRACT Time of urine application on mineral N (Nmin) leaching from a pumice soil was tested. Artificial urine (600 kg N ha −1 ) was applied in early June or late July to small plots after removing a kale/swede crop or to ryegrass/white clover. Mineral N leached in the first winter (measured by porous cups, 600 mm deep) was similar under pasture or ex‐forage crop: 185 vs. 60 kg N ha −1 for June or July urine, with 170–300 kg N ha −1 remaining in the soil (0–600 mm) at the end of drainage. Additionally, 54–118 kg N ha −1 leached in the second winter. In total, later application decreased Nmin leaching by 35–40%. Application of the process inhibitor dicyandiamide increased soil Nmin levels in the post forage crop site for the early urine application but had no effect in the late‐applied urine treatment. There was no significant effect on N leaching.