KNF Specific or Additional Maintenance for "Heavy Feeder" crops? (Sweet corn)
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Corrected October 2026: some figures in this answer are not Master Cho’s teaching (for example spraying 25 gallons per acre, Microbes at 1,200 pounds per acre, or Fuel at 1:3000). See Corrections for what he taught.
KNF for heavy feeders such as corn, garlic, onions, leafy greens and others we want to change up the nutrient cycle to fit the plant and instead of doing a chubby, skinny, chubby, skinny cycle we change it to chubby, chubby, skinny cycle to give the plant the more nitrogen it requires in the leaf formula ...this is the way of the nutrient cycle, in KNF we change the cycle to fit the plant we are growing while their are heavy nitrogen feeders their are also heavy phosphorus feeders that might prefer a chubby, skinny, skinny cycle a flower during its bloom stage might like a extra dose or two of bloom formula each nutrient cycle differs depending on the plant and its nutrient needs ...another way of adding nitrogen to heavy feeders is to bury fish and/or other animal bits, sprinkling used coffee grounds, spreading alfalfa pellets, or planting legumes around the plants ... a method called 3 sisters has been used for years on corn specifically, by planting pole beans next to the corn we not only give the bean something to grow up but it is a legume that fixes nitrogen from the air and with the help of microbes creates nodules on its roots that are full of nitrogen that the corn can tap into, by planting squash at the base of the corn the squash is a much higher phosphorus feeder taking up the unused nutrients left behind by the corn thats feeding higher on nitrogen the corn also adds a lil bit of shade that the squash likes and the squash keeps the soil cool and helps to retain moister in the soil, but there is a sister thats not spoken about as much that adds a great deal to the 3 sisters setup and that is sunflowers they help bring in pollinators, create deep tap roots to break up the soil and help to create a overall healthier soil .....to help with soil compaction tilling the soil once and adding some organic material and dolomite lime will help break up the soil, also by using the 2 step KNF method to build soil will greatly improve the soil Step 1 Spread Microbes ~3lb/100sqft (1200lb/acre) Step 2 Apply Soil Formula 5gal/100sqft (2000gal/acre) Repeat step 2 every 7 days for 2-4 weeks before sowing to help with the lack of minerals do a soil treatment drench 1:30 can go 1:15 if lots of rainfall of sea water this will help to replace the minerals in the soil May the Force be with YouFrom the KNF library
Corrected October 2026: some figures in this answer are not Master Cho’s teaching (for example spraying 25 gallons per acre, Microbes at 1,200 pounds per acre, or Fuel at 1:3000). See Corrections for what he taught.
The nitrogen-heavy cycle is already covered above. The library adds soil prep and timing.
For a new bed, Drake's steps are to ridge the bed, soak biochar in fish amino acid, add IMO4, then water in maintenance solution plus minerals and a Jadam microbe solution. (Office Hours Ep. 20, 19:36) Poor soil needs four weeks to establish a soil foundation. (Cho's Solutions, p. 14) Drake says you can charge biochar with nitrogen or other nutrients aimed at the crop you're growing. (Office Hours Nov 2025, 29:31)
Once the corn is growing, spray weekly with the formula that matches its current stage. (Office Hours Ep. 30, 46:08) The chart gives 25 gallons per acre for spray or 100 gallons per acre for drench. (Office Hours Ep. 147, 36:54) Stop protectors in the last two weeks before harvest. They pull sugars out and reduce sweetness. (Office Hours Ep. 28, 36:18)
The library has no corn-specific ratios, yields, or corn learning resources.
Sources
- 19:36 Office Hours Ep. 20 (Feb 2022) — Crystal Vortex Brewer, Pig Pen Sizing, WCA/WCP for People · “Ridge the bed, soak biochar in fish amino acid, add IMO4, water in maintenance solution plus minerals, then a Jadam microbe solution.”
- 46:08 Office Hours Ep. 30 (May 2022) — The 9 KNF Solutions, Good vs Bad Microbes, IMO Indoor Collection · “Drake sprays weekly with whichever formula matches his crops' current stage”
- 36:18 Office Hours Ep. 28 (Apr 2022) — Beef Aminos, Coral Calcium, and IMO Troubleshooting · “Stop spraying protectors in the last two weeks before harvest or they'll pull sugars out and reduce sweetness.”
- 29:31 Office Hours (Nov 2025) — Biochar Retort Build, Food Canoe Raised Beds, Charging Char · “you can charge it with nitrogen or other nutrients targeted to the crop you're growing”
- 36:54 Office Hours Ep. 147 (Oct 2024) — LAB Aeration, Sugar vs Molasses, Madag Spray Ratios · “spray at 25 gallons per acre or drench at 100 gallons per acre”
- p. 14 Cho's Solutions · “Poor soil requires 4 weeks to establish”