Fruit Tree Spraying Question
So I'm a complete nube that planted a variety of fruit trees in my back yard this spring (all 3-5 years old, bare-root) and they were all doing fantastic, but I recently started seeing some issues with the leaves on my apple and pear trees with the leaves curling and eventually turning yellow/black and falling off and what not.
In the beginning, I thought it was just from them being over watered (it literally rained for about 1 1/2 months straight, nearly every day here randomly and despite it being May and June it was quite cold out; Western Washington this year had weird weather). I noticed a lot of trees in my area seemed not able to decide weather it was fall or spring/summer. But once the leaves started turning black, despite it being ridiculously sunny most of July, I figured there must be some other problem. So I went down to the store and bought a general purpose all-in-one fruit tree spray.
So here's my stupid question. On the instructions it says "spray in 7-14 day schedule until the problem disappears". So am I to read that as "spray once a day for 7-14 days until the problem disappears" or "spray once every 7-14 days until the problem disappears"?
Right now I've kind of gone with the half way between the two approach, spraying the trees three times in two weeks, which I figured was OK, because in the middle it rained really hard for a few days, presumably washing away the spray on the leaves. I have seen some good results too from spraying so far. But now that it's back to being sunny, I figured I should ask here before accidentally damaging my trees from over spraying or under-spraying them and allowing the disease or insect or whatever to continue to harm them.
Also any other spraying or other tips for fruit trees would be much appreciated.