Seed coating possess prevention with pest, increase efficiency, save manpower material resources, and other features. Its application has achieved remarkable economic and convenience in agricultural production, but also the existence of the use of low germination, seedling emergence late, inhibit the adverse effects of crop growth and development.The purpose of this study is to apply a functional additive, which cooperating with seed coating can reduce or eliminate adverse effects of the latter on cotton and peanut seedlings. Test method mainly through germination test and pot experiment, to observe the germination index of morphology, the determination of seedling physiological and biochemical indexes, respectively analyzed the impact of special function additives with seed coating (imidacloprid and carboxin?thiram) applied to peanuts and cotton, which is concluded that special function additives has the positive impact of different level for seed germination and seedling early of cotton and peanut.Through the study we found that peroxidase (POD) activity, malondialdehyde (MDA)content, chlorophyll content and other indexes of different sample handling peanut are different. Compared with the controls, only coated samples NA-B1 with coating treatment makes POD activity increased by 30%, MDA content of the sample processing NA-A6 reduced by 16%, no significant variation of chlorophyll content. But the most significant effect of seed treatment with sample is root activity, which is one important indicators of plant uptake and transport of nutrients. All the root vigor of seeding processed with sample were higher than the control coating, the sample NA-A1 treatment increased by 70%, indicating that root activity of imidacloprid coating peanut seedling was inhibitory.Through the study we found that seeds germination index, seed vigor and seedling root activity of different samples were significantly different. Compared with the controls only coated, sprouted index of sample NA-A4 processing increased by 32%, the seed vigor increased by 34%; Samples NA-YP4 handle make root activity increased by 50%. The result showed that NA series of samples can indeed improve the physiological activity of coating seeds and seedlings.In order to further verify the application effect of functional additives (the above series of samples),it is necessary to carry out field plot experiment?ACKNOWLEDGEMENTS  This work was financially supported by the Special Fund for Agro-scientific Research in the Public Interest. (No. 201303030)

Research on the prevention and control technology of seed coating side effects in peanut and cotton

248th National Meeting (2014)

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