I was mowing our football field last week and noiticed a rust colored powder coming coming from the discharge chute on the mower. After I inspected closer and found that this powder was all over the playing section of the field. I asked my supervisor if anything had been put on the field that I was unaware of(I'm supposed to be the only one taking care of the grounds) and he didn't know of anything either. I was told it might be a fungus but sometimes we get a little extra "Help" from others. I was wondering if anyone would know what this is and How do I get rid of it?