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2021 Volume 34 Issue 3
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LIU Lie-hua, DING Wei. Effects of Three Soil Modifiers on the Control Efficacy of Mustard Club Root and on Rhizosphere Microorganisms[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 19-25. doi: 10.13718/j.cnki.zwys.2021.03.004
Citation: LIU Lie-hua, DING Wei. Effects of Three Soil Modifiers on the Control Efficacy of Mustard Club Root and on Rhizosphere Microorganisms[J]. PLANT HEALTH AND MEDICINE, 2021, (3): 19-25. doi: 10.13718/j.cnki.zwys.2021.03.004
shu

Effects of Three Soil Modifiers on the Control Efficacy of Mustard Club Root and on Rhizosphere Microorganisms

  • School of Plant Protection, Southwest University, Chongqing 400715, China

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  • Received Date: 20/04/2021

  • MSC: S436.344

  • Soil ameliorators have been widely used to improve soil acidification environment and control plant root diseases. In this study,the effects of oyster shell powder,biochar and plant ash on soil acidification were investigated by soil addition method in the ridging stage of tumorous stem mustard. Meanwhile,the effects of the three soil ameliorators on the field control efficacy of mustard clubroot,changes in soil microbial community diversity and soil FDA enzyme activity were investigated. The results showed that the three ameliorators could significantly increase the soil pH value,especially the application of oyster shell powder,which increased the soil pH value by 0.45. Application of oyster shell powder and biochar reduced the incidence of club root in pickle by 26% and 16.67%,respectively,but there was no significant difference between plant ash treatment and the control group. The AWCD value,Simpson index and McIntoh index increased after soil conditioner application. Among them,oyster shell powder increased the carbon metabolism capacity of rhizosphere soil microbial community and increased the activity of soil FDA hydrolase. At the same time,soil amendment with oyster shell powder induced the highest yield of mustard,which was up to 2113.96 kg/mu (15 mu = 1 ha),and the output value increased by 480.99 yuan/mu. The yield increase rate reached 39.75%. Therefore,oyster shell powder is recommended as the most effective soil ameliorant to control the root disease of mustard in the field.
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Effects of Three Soil Modifiers on the Control Efficacy of Mustard Club Root and on Rhizosphere Microorganisms

  • Received Date: 20/04/2021

Abstract: Soil ameliorators have been widely used to improve soil acidification environment and control plant root diseases. In this study,the effects of oyster shell powder,biochar and plant ash on soil acidification were investigated by soil addition method in the ridging stage of tumorous stem mustard. Meanwhile,the effects of the three soil ameliorators on the field control efficacy of mustard clubroot,changes in soil microbial community diversity and soil FDA enzyme activity were investigated. The results showed that the three ameliorators could significantly increase the soil pH value,especially the application of oyster shell powder,which increased the soil pH value by 0.45. Application of oyster shell powder and biochar reduced the incidence of club root in pickle by 26% and 16.67%,respectively,but there was no significant difference between plant ash treatment and the control group. The AWCD value,Simpson index and McIntoh index increased after soil conditioner application. Among them,oyster shell powder increased the carbon metabolism capacity of rhizosphere soil microbial community and increased the activity of soil FDA hydrolase. At the same time,soil amendment with oyster shell powder induced the highest yield of mustard,which was up to 2113.96 kg/mu (15 mu = 1 ha),and the output value increased by 480.99 yuan/mu. The yield increase rate reached 39.75%. Therefore,oyster shell powder is recommended as the most effective soil ameliorant to control the root disease of mustard in the field.

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