I've been doing organic vegetable gardening for two years now and have been trying to get my dad to switch over to this sensible approach for his orchard. I could really use some help convincing him that organic gardening is cost effective. Could some of yall plaese help?

What is he growing?
Where is the orchard?
What chemicals is he using now?

...I am interested in your thoughts on organic spraying for our pecan orchard near Seguin...we have 283 trees...I am planning on regular compost tea sprayings every 60 days...I will make a 30 gallon batch and dilute to a 5:1 ratio in our fan sprayer (150 gallons)...does this sound about right?

He has about 20 peach trees , some blueberries, and a few grapes. As far as the chemicals I honestly don't know. I'm planning on doing a little chem vs. organic veggie growing competition with him and hope it convinces him. Almost forgot, we are located in NE Texas.

It's not easy talking someone into changing to organics if they don't want and initiate the change. By far the best way to transition is cold turkey switch. Since we apparently can't do that, give this a try. Apply dry molassess (20 lbs per 1000 sq ft) to one row or as many as he will allow. You might also pick certain trees or another row and apply the entire Garrett Juice Plus formula. It can be added to te compost tea you're already going to use. Spray it and/or drench it into the soil. I think the diffeerence these two additions will make will get his attention. Good luck and keep us posted.

I think I've found my opportunity to show my father the effects of organic gardening. He is preparing to spray his peaches for Brown Rot. Is there an organic treatment or prevention out there?

Compost tea is the single most popular spray. Milk spray and liquid seaweed spray are the two most popular non-compost tea sprays. They all improve the health of the plant by improving the health of the microbes living on the plant.