soil types and conditions for adding different soil amendments. This new finding entitled, the factors that affected DMDS degradation in soil under different conditions were revealed. In conclusi...
Recently, a research group led by Dr. CAO Aocheng, the chief scientist of the innovation team for prevention and control of soil-borne pests at IPP-CAAS, has revealed the degradation dynamics of a new fumigant dimethyl disulfide (DMDS), in soil treated with different environments, soil types and conditions for adding different soil amendments. This new finding entitled “Effects of soil type, temperature, moisture, application dose, fertilizer and organic amendments on chemical and bio-degradation of dimethyl disulfide in soil”, has recently been published on the Land Degradation and Development, providing a theoretical basis for scientific application of DMDS.
DMDS is a potential alternative to methyl bromide for soil fumigation to control soil borne disease. Laboratory and field experiments have revealed it can control a broad spectrum of soil-borne pathogens, especially plant-parasitic nematodes. DMDS has been approved an alternative to methyl bromide (MB) in the USA, and is marketed as Paladin® (Arkema Inc., Colombes, France). On March 28th, 2012, IPP-CAAS obtained the patent authorization of this technology, and then sign a transfer agreement with Linhai Jianxin Co. Ltd, to guarantee its industrialization and extensive application in soil disinfection in China.
Understanding the dynamics of DMDS degradation in soil is critical for establishing the technical specifications for its application in soil disinfection, such as choice of optimum application conditions, soil fumigation time, open air time, types and adding time for soil conditioner addition. In this study, conditions such as different culture temperatures, soil moisture content, soil type and soil conditioner were set, and with the help of high-pressure sterilization, soil respiration quotient, adsorption kinetics test and 16s RNA, finally, the factors that affected DMDS degradation in soil under different conditions were revealed. In conclusion, the environmental behavior of new fumigants was systematically studied to provide a theoretical basis for its scientific application, and it is of great practical significance to popularize the new biological fumigant with efficient and low risk. This work was supported by the National Natural Science Foundation project of China (No. 31572035) and the National Key Research and Development Program of China (2017YFD0201600).
More details are available on the bellow links:
http://dx.doi.org/10.1098/rspb.2018.1283
