Every two years a survey of the custom operations is conducted to determine the current rates charged for specific machinery operations. The survey is divided into two parts: spring and summer operations, including planting and small grains harvest in Part I, and information about fall and miscellaneous operations in Part II. The responses are reported by the Agricultural Statistics Districts shown on the map below. Custom rates reported include charges for the use of necessary equipment, fuel and supplies such as baling wire or twine provided by the custom operator, and labor. Seed, fertilizer and chemical costs are not included