Many other grain crops also are grown except not much corn or soybean. Test weight, Class purity of wheat, dockage, smut dockage, grain moisture, kernel damage, etc. Often Submitted Sample certificates on each field of grain are required before a country elevator will receive grain. The physical grain is specifically described for domestic and export markets, the same within human and experimental error at all locations. Transactions between buyer and seller are easier.
Futures trading is possible.
Permits definite market reports on grade and kind. Facilities trading on basis of warehouse receipts. 2.8 Facilitates co-mingling or bulking or blending grain at country points or terminals and for transportation. Reduces marketing, storage and other risks. Shows cause for discounts and suggests remedy or how to improve.