I just got a spec sheet for a quote I'm working on. It says under Fertilizing: Apply on lawn areas twice a week during (spring and fall) at a rate of 38kg/ha plus micronutrients including 13% iron chelate at a rate of 1.5kg/ha Is this right? Won't that kill the grass? I know nothing about fertilizing but I think this is over fertilizing. Let me know what you experts think.