Printed book · Report
Availability of Phosphorus in Cow Slurry using Isotopic Labelling Technique
A pot experiment was conducted to evaluate the influence of cow slurry on P uptake by corn and to estimate the readily available P in the slurry by using an isotopic labelling technique. Water-soluble P in soil was increased and isotopic equilibrium of available P was attained after labelled slurry was mixed thoroughly throughout the soil.
Labelled slurry applied at planting increased the P uptake by corn, whereas the same amount applied one week before harvest did not affect the P uptake. It was estimated that 46-54% of the total P uptake in plants is derived from the slurry. The readily available P (the L-value) in the slurry was at least 26 mg/kg which equals 3.7% of the total P.
Language: | English |
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Publisher: | Risø National Laboratory |
Year: | 1988 |
Volume: | 557 |
Pages: | 16 s. |
Series: | Denmark. Forskningscenter Risoe. Risoe-r |
ISBN: | 8755013902 and 9788755013902 |
ISSN: | 01062840 |
Types: | Printed book and Report |