Watering a mostly clay Garden for a newbie
I have a bigger veggie garden than normal this year (11X30). It is wet an inch down and all plants are mulched but if i only water 2 times a week my plants are all wilted over within 1-2 days since last watered. I water every day when over 90+ and every 2 days when in 80's and I do not have wilted plants.When I water I use a overhead sprinkler for 15-20 mins. At about 4:30 am before I go to work. (all I have right now) My question is, Am I watering too much? I can't see my veggies surviveing if i only water 1-2 times a week. I have read that too much water is as bad as not enougth. Will a watering gauge give me a acurate rate of how much water I am putting down? I realize that it all does not soak in because I am in heavy clay. About half the garden is amended with sand and topsoil but the other half(what I planted 1st) is all clay. We have 2 raised beds that are doing great, that we water every 3-4 days and all is good, but it is all topsoil in the raised beds.
Thank You for your time and responses!