据加拿大卫生部消息，9月11日加拿大卫生部发布PRD2015-23号征求意见文件，有害生物管理局（PMRA）拟批准登记磷酸钾盐和磷酸二钾盐（Mono- and Di-Potassium Salts of Phosphorous Acid）销售和使用，用于防治温室黄瓜的霜霉病。征求意见截止日期为2015年10月26日。
目前加拿大已批准磷酸钾盐和磷酸二钾盐作为几种蔬果的叶面杀菌剂以及土豆的采后处理。
部分原文报道如下：
Mono- and di-potassium salts of phosphorous acid （commonly known as phosphorous acid） are phosphonate fungicides belonging to the Group 33 class of fungicides as designated by the Fungicide Resistance Action Committee. It may inhibit the metabolism of susceptible fungal pathogens, and stimulate the plant's natural defence response to pathogen attack. Mono- and di-potassium salts of phosphorous acid are currently registered in Canada as a foliar fungicide on certain vegetables and fruits, and a post-harvest treatment on stored potatoes.
原文链接：http://www.hc-sc.gc.ca/cps-spc/pest/part/consultations/_prd2015-23/index-eng.php
日期：2015-09-24
