I may have posted this earlier but the search function is not working properly at the moment.

You might be surprised what this is And don't invite me over if you are going to use this !!!

http://www.motherearthnews.com/organic_gardening/1983_March_April/A_Safe__No_Cost_Fruit_and_Berry_Fungicide

Interesting, but that is where I draw the line on "natural remedys" Joe! That is a little too natural for me.

Ned

Ned, you can always use urea instead of that liquid thingy!

There are organic growers in other countries using fresh animal
wastes in their fertilizing regimens for edible crops now. What
we have here for organic certification standards in California far
exceeds the recommended quality controls of most any other
state and is off the charts compared to other countries. I am not
being a jingoist, check out what a person in this state has to go
through for compliance just to produce "organic" lettuce for sale
in our local grocery stores.

Urea has been used as a foliar spray for Citrus years ago, long before
the study in the late 70's as mentioned in the article. This is nothing
new but the adaptation of using fresh urine as a topical spray is "newish"
and not recommended for edible crops. Salts of various kinds have
been used as ground applied anti-fungal controls when cultural cleanups
were too labor intensive but it is when the salts (dried urine) break down
into liquid forms or recombine to become another salt is when we shoot
ourselves in the foot applying salts to heavy alkaline soils that already
have some salt issues or applying the salts near any known water source.
Acid soils in high rainfall areas are better able and equipped to handle
the application of fresh urine rather than an alkaline or saline soil will
be. We can help prevent a fungus from forming or reappearing on our
berries through topical applied fresh urine sprays but we can also create
a newer fungus from the residue and create a possible bacterial problem
that can be far worse for us to deal with. A little applied common sense
tells us that we are playing with fire here. Think of the E-coli outbreak
with Spinach if anyone needs to be reminded of what bad can happen
when animal wastes enter the food chain. Does the benefit outweigh
the possible risk? Decide for yourselves.

Jim

Discussing pros and cons here for California.
1) We have mostly alkaline soils, and if a person's diet is salty that could be a problem later.
2) The intent is to apply when fruit trees are dormant to kill off spores. This is during the winter when there is always a series of rains that can wash off and dilute these applications. The technique is timing of application. Apply during forecasted rainless days of early winter, for sure these will be washed off by rains in the later parts of winter. We don't want to apply and then to be washed off the next day.
3) In the context of stone and pome fruits, and applying during the winter, it is almost an impossibility to get E. Coli outbreaks in the harvested fruits, a long long time after whatever organic based stuff or urea fertilizers have been applied. If you have proper drainage and aeration, this should not be a problem.
4) But for foliar spray on vegetables, or direct application on fruits (ie citrus fruits) and other edible parts, this technique would be suicidal to use anytime of the year, for all the other factors you have mentioned.
5) If you are taking medications such as antibiotics, you will also be indirectly selecting for antibiotic resistant strains of microorganisms. This is happening already as we dump sewage into the rivers, ground water and oceans even if we treat them before dumping. It is just too expensive to remove these medicines and other chemicals from our waters, that even the precipitations in Antartica has been found to be contaminated.

just more to consider, am not taking sides.