Comparison of phosphorus availability with application of sewage sludge, sludge compost, and manure compost
| Autor: | R. P. Voroney, G. Wen, Julien P. Winter, M.P. Schellenbert, Thomas E. Bates |
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| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Communications in Soil Science and Plant Analysis. 28:1481-1497 |
| ISSN: | 1532-2416 0010-3624 |
| DOI: | 10.1080/00103629709369891 |
| Popis: | The objectives were to determine if phosphorus (P) from different organic wastes differs in availability to crops. Four materials: digested, dewatered sewage sludge (DSS); irradiated sewage sludge (DISS); irradiated and composted sewage sludge (DICSS); and composted livestock manure (CLM) were applied for two years at five rates (0, 10, 20, 30, 40 Mg#lbha‐1#lbyr‐1) with four replicates. Uptake of P was measured in lettuce [Lactuca saliva L. (cv. Grand Rapids)], bean [Phaseolus vulgaris L. (cv. Tender Green)], and petunia [Petunia hybrida Vilm. (cv. Superior Red)] in 1990, and in consecutively harvested two cuts of lettuce in 1991. Percentage of total P that was extractable by 0.5M sodium bicarbonate (NaHCO3) in CLM (30–70%) was much higher than in DSS, DISS, and DICSS (0.8–5.6%). Phosphorus uptake by crops harvested in an early stage of growth, lettuce in 1990 and first cut lettuce in 1991, and the extractable soil P linearly increased with total P applied. The lack of response in P uptake with b... |
| Databáze: | OpenAIRE |
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