Meat and bone meal and biosolids as slow-release phosphorus fertilizers

作者：Boen Anne^*; Haraldsen Trond Knapp

来源：Agricultural and Food Science, 2013, 22(2): 235-246.

• Availability
• P-AL
• P-Olsen
• ryegrass
• organic fertilizers
• sewage sludge

Biosolids and meat and bone meal (MBM) are commonly used as fertilizers in agriculture, often at application rates where total phosphorus (P) far exceeds the annual demand. In a pot experiment, three biosolids and two types of MBM were tested at two commonly used application rates. Their contributions to P uptake in ryegrass (second and third season) were compared with annual mineral P fertilization. The soil was analysed for extractable P (P-AL and P-Olsen). Only soil amended with digested, limed biosolids provided a P uptake in ryegrass the third season comparable to annual NPK fertilization. Bone-rich MBM had considerable contributions to third season P uptake in soil with pH %26lt; 6. The product application rates did not influence P uptake significantly for any of the products. P-Olsen was found suitable to describe residual effects on soil P solubility, whereas the P-AL-method was not applicable for MBM fertilized soils.

• 出版日期2013