|
|
| Soinne, Helena; Saarijärvi, Kirsi; Karppinen, Minna; Hartikainen, Helinä. |
| 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, urine and dung were added to soil in amounts corresponding to single excrement portions and the soil samples, taken at certain intervals, were analysed for pHH2O, acid ammonium acetate extractable P (PAc) and water extractable total P (TPw), and molybdate reactive P (MRPw). Urine additions immediately increased soil pH and MRPw, 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... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover. |
| Ano: 2008 |
URL: http://orgprints.org/17079/1/soinne.pdf |
| |
