Renovation of a pear orchard site with sludge compost
作者:
R. F. Korcak,
期刊:
Communications in Soil Science and Plant Analysis
(Taylor Available online 1986)
卷期:
Volume 17,
issue 11
页码: 1159-1168
ISSN:0010-3624
年代: 1986
DOI:10.1080/00103628609367781
出版商: Taylor & Francis Group
关键词: cadmium;calcium;organic wastes;Pyrus communis
数据来源: Taylor
摘要:
A lime‐stabilized sewage sludge compost was used as a surface amendment to improve the soil and nutritional status of a number of established pear cultivars grown on an acidic, low ferility soil site. Leaf Ca status was significantly increased while trace metals were not elevated and in most cases decreased by sludge compost over the course of the study. Soil chemical properties were modified in a manner similar to liming. Addition of sludge composts, particularly low metal containing materials, appears to represent an acceptable aid in renovating established pear orchards located on poor soil sites. Leaf, fruit flesh or peel Cd were not significantly effected by the compost addition. The compost added twice the recommended level of available N the first year and sub‐optimum N the following two years. Leaf N, although significantly increased in the composted versus non‐composted controls, was below sufficiency levels by the third year after addition. This indicates that compost cannot fully supply required N from a one time application even over the short term.
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