SOYBEAN ROOT ROT (MANITOBA) AND PHYTOPHTHORA ROT (MANITOBA AND SASKATCHEWAN) IN 2018

In 2018, 95 soybean crops were surveyed in Manitoba for root diseases. Samples from all fields were rated for root rot and from 42 fields, roots were processed for fungal isolation and identification. In the 42 fields, fusarium root rot was the most prevalent root disease. All 95 soybean crops as well as one additional crop were assessed for Phytophthora root rot. Thirty percent of Manitoba soybean crops (29/96) tested positive for the presence of Phytophthora rot. In Saskatchewan, Phytophthora sojae was detected in seven percent (1/15) of the soybean crops surveyed.