We review new trends of agricultural applications of atmospheric-pressure plasmas for decontaminating agricultural products and enhancing seed germination and growth of plants and beneficial microorganisms. We classify the decontamination techniques into three kinds of treatments, which are gas-phase, in-liquid, and plasma-activated liquid treatments, and introduce recent studies mainly after 2010, discussing the inactivation mechanism of microorganisms in each treatment. Likewise, we categorize the enhancement techniques into the same three kinds of treatments, and introduce the growth enhancements in detail, discussing the mechanisms and future prospects.
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