So we all know that the actual Impervious Black Thatch is formed by improper cultural practices... i.e. too much fertilizer(especially in the Spring) and too much water... So my question is: What is a simple practical way to come onto a lawn and see if it is getting low enough on water that it can be irrigated again without creating thatch? This is an exact opposite approach of "Better Safe Than Sorry" mentality, in which the rule of thumb is to keep it moist... Is it necessary to plug the soil or have it monitored wth meters? or can we just wait until the turf feels dry 1/2 hour after sunup and the dew is gone?