?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Forgprints.org%2Fid%2Feprint%2F17079%2F&rft.title=Sensitivity+of+soil+phosphorus+tests+in+predicting+the+potential+risk+of+phosphorus+loss+from+pasture+soil&rft.creator=Soinne%2C+Helena&rft.creator=Saarij%C3%A4rvi%2C+Kirsi&rft.creator=Karppinen%2C+Minna&rft.creator=Hartikainen%2C+Helin%C3%A4&rft.subject=+Nutrient+turnover&rft.description=The+objective+of+this+study+was+to+examine+the+effects+of+urine+and+dung+additions+on+the+phosphorus+(P)+chemistry+of+pasture+land+and+to+compare+the+sensitivity+of+two+soil+extraction+methods+in+assessing+the+P-loading+risk.+In+a+field+experiment%2C+urine+and+dung+were+added+to+soil+in+amounts+corresponding+to+single+excrement+portions+and+the+soil+samples%2C+taken+at+certain+intervals%2C+were+analysed+for+pHH2O%2C+acid+ammonium+acetate+extractable+P+(PAc)+and+water+extractable+total+P+(TPw)%2C+and+molybdate+reactive+P+(MRPw).+Urine+additions+immediately+increased+soil+pH+and+MRPw%2C+but+no+such+response+was+observed+in+PAc+extraction+due+to+the+low+pH+(4.65)+of+the+extractant+enhancing+the+resorption+of+P.+The+PAc+responded+to+the+dunginduced+increase+in+soil+total+P+similarly+as+did+Pw%2C+which+suggests+that+both+tests+can+serve+to+detect+areas+of+high+P+concentration.+However%2C+water+extraction+was+a+more+sensitive+method+for+estimating+short-term+changes+in+P+solubility.+In+pasture+soils%2C+the+risk+of+P+loss+increases+as+a+result+of+the+interaction+of+urination+and+high+P+concentration+in+the+topsoil+resulting+from+continuous+dung+excretion.+&rft.publisher=MTT+Agrifood+Research+Finland&rft.date=2008&rft.type=Journal+paper&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=%2Fid%2Feprint%2F17079%2F1%2Fsoinne.pdf&rft.identifier=+++Soinne%2C+Helena%3B+Saarij%C3%A4rvi%2C+Kirsi%3B+Karppinen%2C+Minna+and+Hartikainen%2C+Helin%C3%A4+++(2008)+Sensitivity+of+soil+phosphorus+tests+in+predicting+the+potential+risk+of+phosphorus+loss+from+pasture+soil.+++Agricultural+and+Food+Science%2C+17+(3)%2C+pp.+265-277.++++++++