Fertilizer foliar spray application rates

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Fertilizer foliar spray application rates

Radishrain
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This post was updated on .
This thread is for declaring and experimenting with foliar spray application rates of fertilizer, minerals, and such. My pump sprayer is 51oz (although it's advertised as 48oz, though it has a marker at the 48 point); so, I'll try to give rates for the standard gallon of water, as well as for 51oz (fluid ounces) of water.

• Calcium nitrate: 2-4tbsp per gallon (not tested); 1tbsp per 51oz (tested; works great, and can be done once a week or two; 2tbsp is enough to slightly burn an outdoor grapevine, though)
• Miracle Gro 24-8-16 All-purpose water-soluble fertilizer: 1 level tbsp per gallon every one to two weeks (not tested); 1 semi-heaping teaspoon (1.195 teaspoons, or 0.3984 tablespoons) per 51oz (tested); only for outdoor foliar sprays, according to the instructions on the box.
• Epsom salt: 2tbsp per gallon once a month, for most plants (not tested); 2.39 teaspoons per 51oz (not tested)
• Potassium sulfate: 2-3 tbsp per gallon; 0.7968-1.1952 tbsp (2.39-3.586 teaspoons) per 51oz
• Monoammonium phosphate: 1-3tbsp per gallon (not tested); 1.195-3.585 teaspoons (not tested)
• Monopotassium phosphate: 2-3 tbsp per gallon; 0.7968-1.1952 tbsp (2.39-3.586 teaspoons) per 51oz
• Copper sulfate: 2%, or 5.1 tbsp per gallon, twice a season, for deficient wheat (not tested; sounds like a lot; be careful, because too much copper can stop plant roots from growing); 2.0318 tbsp per 51 oz twice a year (not tested); for tomatoes, as a fungicide, they say to use 4 teaspoons per gallon (not tested) every 7-10 days, or 1.5936 teaspoons per 51oz
• Zinc sulfate monohydrate: Foliar spray not recommended for all kinds of water (since it reacts with at least some water to form a solid white rock-like substance). 1-3tbsp per gallon (not tested); 1.195-3.585 teaspoons (not tested)
• Iron sulfate heptahydrate: 1-2tbsp per gallon (not tested); 1.195-2.39 teaspoons per 51oz (not tested).

Sources:
https://www.greenwaybiotech.com/products/calcium-nitrate
https://homeguides.sfgate.com/can-put-miraclegro-purpose-plant-food-leaves-75878.html
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/epsom-salt-gardening.htm#:~:text=Most%20plants%20can%20be%20misted,of%20water%20once%20a%20month.&text=With%20roses%2C%20you%20can%20apply,and%20then%20again%20after%20flowering.
https://www.publish.csiro.au/an/EA9800717
https://www.greenwaybiotech.com/products/ferrous-sulfate
https://www.greenwaybiotech.com/products/zinc-sulfate
https://www.greenwaybiotech.com/products/monoammonium-phosphate-12-61-0-100-water-soluble
https://www.greenwaybiotech.com/products/potassium-sulfate-0-0-53

fertilizer_
foliar_spray
Location: SW Idaho, USA
Climate: BSk
USDA hardiness zone: 6
Elevation: 2,260 feet
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