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- Title
Effects of root-knot nematodes on cucumber leaf N and P contents, soil pH, and soil enzyme activities.
- Authors
Hua Xu; Wei-bin Ruan; Yu-bao Gao; Xiao-yan Song; Yu-kun We
- Abstract
A pot experiment was conducted to study the effects of inoculation with root-knot nematodes on the cucumber leaf N and P contents, and the rhizospheric and non-rhizospheric soil pH and enzyme activities. The rhizospheric soil pH didn' t have a significant decrease until the inoculation rate reached 6000 eggs per plant. With the increase of inoculation rate, the leaf N and P contents, rhizospheric soil peroxidase activity, and rhizospheric and non-rhizospheric soil polyphenol oxidase activity all decreased gradually, rhizospheric soil catalase activity was in adverse, non-rhizospheric soil pH decreased after an initial increase, and non-rhizospheric soil catalase activity had no regular change. After inoculation, rhizospheric soil urease activity decreased significantly, but rhizospheric and non-rhizospheric soil phosphatase activity and non-rhizospheric soil peroxidase activity only had a significant decrease under high inoculation rate. In most cases, there existed significant correlations between rhizospheric soil pH, enzyme activities, and leaf N and P contents; and in some cases , there existed significant correlations between non-rhizospheric soil pH, enzyme activities, and leaf N and P contents.
- Subjects
ROOT-knot nematodes; CUCUMBER diseases &; pests; PLANT inoculation; SOIL inoculation; RHIZOSPHERE; PEROXIDASE
- Publication
Yingyong Shengtai Xuebao, 2010, Vol 21, Issue 8, p2038
- ISSN
1001-9332
- Publication type
Article