Posted: 26/05/2013 at 09:05
Verdun, sorry, but I never foliar feed tomatoes. Damp/wet leaves are an invitation to fungal problems. I know people do foliar feed in the mornings to let the sun dry the leaves but I wouldn't. Dry leaves and as much air circulation as possible are about the only natural aids against fungal problems.
Haven't heard of milk preventing deficiencies. Some claim milk is a guard against fungal problems. I've seen it argued that milk changes the pH of the surface of the leaf making it less comfortable for the fungal spores. But there's no scientific evidence, purely anecdotal.
artjak, toms will certainly grow without their stems being buried at planting time. The benefit of burying is the extra root structure. The stronger and more extensive the root system, the healthier the plant.