Spraying for Mildew

  It seems that some chemicals need to be approved before being used in a greenhouse, such as one for spraying mildew.  Pristine was just being used at 248 on the cucumber plants.

Carl adjusting the intensity of the spray.

  The solution mixture ratio is 40 grams per 100 liter of water.  We will add more if the mildew condition is really bad.  Some chemicals are also known to kill mildew and spidermites as well, but they may be illegal to use.  Mildew is easily killed, as just water itself can pop their spores.  We use Pristine because it stays and continually kills the spores when they pop out.

  According to Carl, to find out if the mildew infection is gone after spraying, we check the mildew spots after three days to check for the presence of brown spots instead of white spots. We usually just spray on top of the plants, but we can also spray from the bottom and then the top for more protection.

Carl spraying from below the leaves.

Carl going backwards and spraying the top of the leaves.

Carl spraying the walkway in the end.

  Currently we buy 1.8 liter Pristine for $800.