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Description: This small grain (e.g., wheat and barley) planter is designed for minimal tillage, disking and planting in a single pass. The disk contains two rows of blades with seeds introduced between the two rows of blades. The front blades till the soil while the back blades cover the seed with soil. Seed to be sown is transported in the trailing unit. The planters in NAL #4803 and #4804 also are designed with soil tillers so the entire tilling and planting may be completed in one pass. In contrast, some small grain planters and row crop (e.g., corn and soybeans) planters such as NAL #4801 and #4802 are used after the soil has been tilled in a previous operation. All of these planters usually include: a) separate bins for seed and fertilizer; b) mechanisms to insert seed and fertilizer into the soil; c) rollers or crushers to compact soil over the seed and fertilizer; and d) an arm that marks the center of the route for the next pass of the planter. The density of planted seeds and the depth at which the seed is deposited are adjustable. Depth of planting is usually about 1 to 1.5" for corn, and about 1" small grains. The interval to germination depends mostly on soil moisture and temperature.

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