Grain Drying Shrink and Net Bushels
Moisture shrink from wet to market moisture, dried weight, handling shrink.
Example
You enter
- Gross wet weight (lb) 10000
- Wet moisture (%) 20
- Market moisture (%) 15
- Handling shrink (%) 0.5
- Test weight (lb/bu; 56 corn, 60 wheat/soy) 56
You get
- Net market weight 9365
- Net market bushels 167.2 bu
- Shrink 6.35
Details, formula, and sources
Moisture shrink from wet to market moisture, dried weight, handling shrink, and net market bushels at the crop test weight (56 corn, 60 wheat/soy). The buyer contract and moisture discount schedule govern.
moist_shrink = (M_wet - M_dry)/(100 - M_dry); W_dry = W (100 - M_wet)/(100 - M_dry); W_net = W_dry (1 - handling/100); bushels = W_net / test_weight; total_shrink = (W - W_net)/W.
The standard grain moisture-shrink relation used by USDA and land-grant extension, by name.
Grain-shrink formulas are published free by land-grant extension services (e.g. Iowa State, Purdue). The buyer's contract, moisture discount schedule, and certified settlement scale govern.
Estimate. AHJ and licensed professional govern.
Field names used by the API: W_lb, M_wet_pct, M_dry_pct, handling, tw_lbbu, W_net_lb, bushels, total_shrink_pct
- Moisture-shrink form (M_wet - M_dry)/(100 - M_dry) with the water-balance dried weightUSDA / land-grant extension
- Test weight 56 lb/bu corn, 60 lb/bu wheat and soybeans, 32 lb/bu oatsUSDA FGIS
- No dockage no foreign-material or damage dockage and no discount-dollar computationscope of this tile