FOLIAR FEED, what NPK ratios and nutes can be used

FOLIAR FEEDING

I would like to know what nutes/ratios work well in a foliar feed
I currently using bio canna nutes NPK 3.5/1/5.5 i also have some NPK 8/1/1 guano, are any of these useable in a foliar feed? if yes ,at what strenghts
Im in the 3rd week of vegitation

+rep for info

would you like a organic or chem FOLIAR FEED

Did you know plants adsorb nutrients through the leaf and stem 300% faster than the roots? Here is a brief from Wikipedia.

"Dr. H.B. Tukey, renowned plant researcher and head of the Michigan State University (MSU) Department of Horticulture in the 1950s, working with research colleague S.H. Wittwer at MSU, first proved conclusively that foliar feeding of plant nutrients really works. Researching possible peaceful uses of atomic energy in agriculture, they used radioactive phosphorus and radiopotassium to spray plants, then measured with a Geiger counter the absorption, movement, and utilization of these and other nutrients within plants. They found plant nutrients moved at the rate of about one foot per hour to all parts of the plants."[2]
Foliar feeding is considered especially useful for introducing trace elements, or for "emergency" feeding of plants which are found to have a specific shortage. But in some cases, with tomatoes, for example, it is believed that foliar feeding during flower set causes a dramatic increase in fruit production.

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From what i can gather you can use your Bio Canna nutes. You must use 1/3 of what the nutes normally state when mixing with water. To answer your question about the bat guano, you may use the guano at a rate of 3-6 tbls per gallon of water. Many shy away from using organic nutes such as, guano, manure, or blood meal because of the unsanitary conditions it may create.

Foliar feeding is a great way to introduce nutrients into the plant quickly when they experience nutrient deficiency's. Here is a great site with picture examples: Cannabis deficiencies. Liquid Seaweed is great when used as a weekly spray. Seaweed is the best way to give your plants the steady stream of over 70 minerals, micronutrients, amino acids and vitamins. Also contains growth regulators which stimulate vigorous root development and plant growth. Encourages tolerance to plant stresses such as frost, pests, disease and drought. Mix 2-3 ounces per gallon of water. Hope this helped here are a few more intestering links:

Wikipedia: Foliar Feeding
George Kuepper NCAT Agriculture Specialist: Foliar Feed
SimplyHydro: Foliar Feeding

Cheers 4 the info m8, i only using all organic, ill give the bio bcanna a go at foliar feed, but i herd bat shit kills bugs n stuff??

Great information about foliar feeding here...I am just wondering, is it better to use organic nutrients for foliar feeding or would it be okay to just settle with synthetic nutrients? I also would like to know if it's really healthy to do foliar feeding on plants for at least once a week???