Diagnosing low nitrogen

We frequently point out the dangers of too much nitrogen in turfgrass health, but there are equal warnings to take heed of on the damage that low nitrogen can do. Sometimes we receive samples where a disease was suspected, but where the diagnosis turned out to be low nitrogen. In addition to causing a shift from green to yellow turf color and slowing turf growth and recovery, low N is also implicated in diseases such as anthracnose, red thread and…