For a full-size plot combine:
- 12 lbs. Blood meal, feather meal or other organic nitrogen fertilizer with NPK around 15-0-0.
- 100 lbs. organic compost or manure[1], enough for about 1.5 inches.
- 25 lbs. gypsum
Till or dig into soil.
Water deeply.
Wait a few days before planting.
Wait at least 1 week to plant seeds.
For your safety, wear a mask when working with fertilizers.
If you have raised beds or multiple walkways in your plot, reduce by a quarter.
[1] You can reduce nitrogen by 2 lbs. if using manure