For the first time, analyses of plant samples from a number of alfalfa fields have been showing low sulphur levels. Is this an anomaly or the new normal?
by KEITH REID
Those who have followed my writings for the past couple of decades know that my message regarding sulphur has been pretty consistent: “All of Ontario, except the far northwest, gets enough sulphur from air pollution, so we don’t need to add any sulphur fertilizer.”
Not everyone agreed with me, but the evidence I could find all supported this position. Even canola, the crop with the greatest hunger for sulphur, only showed sporadic responses if more was added.