Originally published in PulsePoint magazine, April 2019
Dry weather caused problems for many Saskatchewan farmers last growing season, but it also brought benefits, including a drop in the amount of root rot that had been observed in fields for the last five years. “We see some improvement in dry years,” says Dr. Syama Chatterton, who has been studying root rot for several years. “The dry cycles are helping.”
Chatterton, a Research Scientist for Agriculture and Agri-Food Canada (AAFC), conducted field surveys across Western Canada between 2014 and 2017 and found that Fusarium root rot had been present in about 50 per cent of pea fields and 60 per cent of lentil fields, on average. Another 50 per cent of pea fields and 40 per cent of lentil fields tested positive for the presence of Aphanomyces (the most destructive form of root rot), on average, over the same amount of time. These percentages were closer to 60 to 80 per cent in wetter years.
Chatterton cautions however that dry weather alone does not completely alleviate the many concerns over this potentially devastating soil-borne disease. For one thing, dry weather seems to affect peas more than lentils.