Fertilizing during hot months
I understand that using a high N fertilizer is not recommended during the hot summer months and was wondering what I can apply to keep the lawn green,and healthy without a high N? Also, my soil test stated that the soil has a slightly lower than optimum pH and high magnesium and that I should apply 50#/1000 ft.sq. of calcitic lime. I believe that the common variety of lime used on turf is dolmitiic and contains magnesium so, can anyone recommend a type of calcitic lime?