The Classic 18 - 0 - 6 with 50% SRN should not be applied at a higher rate than ½ lb of Nitrogen per 1000 sq ft to avoid burning your turfgrass. .Applying 1lb per 1000 sq ft would be double the recommended rate per the chart on the product label.
You are able to apply The Classic 18 - 0 - 6 with 50% SRN through traditional spray applicators or through fertigation as directed on the product label.
No, the Classic 18 - 0 - 6 with 50% SRN does not need to be watered in as long as you are using sufficient volumes of water as recommended per the product label.