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Dave,Just a quick correction - maybe a typo, but in regards to your 4th paragraph in your first post. Actually, higher humidity levels reduce the need for irrigation. Its low humidity, dry conditions when the water needs to be pumped.....
Recently I spoke with a turfgrass researcher that has a dwarf variety of poa annua that thrives on little water and needs mowing a few times a year. Unfortunately, he can't get it to market, because it grows so slow that it won't go to seed.
Dave:Don't worry about that for a second. So what if they told you the opposite of the truth? That was last year. This is this year and now you've got some of the finest minds in the world working on your course's case for firm and fast. You even have the world's best nonagronomist agronomist working on your case---me!I'm surprised you didn't react more positively to my Afro analogy to the ill effects of thatch buildup to the bouncing running ball.I
Dave,I am not aware of any specific pesticide that with misuse is responsible for thatch buildup. Microorganisms are vital in the breakdown of thatch. In my experience as a rule of thumb, misuse of fungicides and insecticides can reduce microbial activity substantially (and earthworms). Quick theoretical example: High nitrogen fertilizers promote speedy, succulant, growth, which in turn promotes greater disease and insect pressure, thus the need for more frequented pesticide use. The result of this is detrimental to favorable microorganisms, which favors a thatch layer.Don, what you say is true, areas of turf not chemically treated get thatch, no argument here. Acidic soils perhaps?