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| Effects of Biological Organic Fertilizer Made from Food Waste on the Control of Tomato Root Knot Disease and Soil Biological Properties |
| Received:January 20, 2015 |
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| KeyWord:waste;biological organic fertilizer;Paecilomyces lilacinus;disease-control effect;soil biological properties |
| Author Name | Affiliation | E-mail | | YU Zhen | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China
Graduate University of Chinese Academy of Sciences, Beijing 100049, China | | | ZHANG You-chi | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | | | LUO Wen-sui | Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China | wsluo@iue.ac.cn |
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| Abstract: |
| In this study, the effect of biological organic fertilzer(BOF) on the control of the tomato root knot disease and soil biological activities was studied in pot experiment. The BOF was made by inoculating food waste organic fertilizer with nematophagous fungus Paecilomyces lilacinus and compared other types of fertilizer, e.g., chemical fertilizer(CF) and food waste organic fertilizer(OF). Results showed that the root knot disease was significantly reduced in the pots treated with BOF as compared with CF(by 218.6%) or OF(by 178.4%)(P<0.05). Among all the treatments, the highest values of plant height, stem diameter and fresh weight were also obtained in BOF treatment, which may be attributed to the disease control ability of BOF. The real-time quantitative polymerase chain reaction(qPCR) detected significantly larger populations of bacteria and actinomyces in BOF treated soils than those in CK(no application of fertilizer) or CF treatments(P<0.05). Besides these, the activities of soil dehydrogenase, urease, invertase and acid phosphatase in the BOF treatment were dramatically higher than other treatments. These results indicated that the BOF has promising future for reducing tomato root knot disease, promoting the growth of tomato and improving the soil biological properties. |
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