الفهرس 
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Abstract
This investigation is on the design and construction of a small and simple seed-drill, suitable for small seeds such as wheat and rice. The designed seed-drill has to be operated using the power available on farm such as animal, small tractor, or power tiller. Another principal aim is the use of materials existing on the local Egyptian market to enable national workshops to manufacture and maintain the drill. Two group of experiments were carried out to study the effect design factors on the seed drill performance: Laboratory experiments: to find the effect of the following factors on: Seed discharge: (a) effect of ground-wheel speeds, (b) effect of gate opening, and (c) uniformity of feeding rate from each tubes. Seed damage and germination: (a) effect of ground-wheel speeds, (b) effect of gate openings, and (c) effect of feeder materials. Seed distribution: (a) seed distribution in transvers direction of rows, and (b) seed distribution along the line. Field experiments: to find the following points: Field experiments: to find the following points: Effect of machine forward-speeds on plants distribution in transverse directions to rows. Effect of covering types on germination percent. Effect of ground-wheel types on: (a) slip percent, (b) draft force, and power requirements, and (c) fuel consumption. Effect of forward speed on field efficiency. Effect of forward speed and covering types on final grain yields per feddan. Estimating the costs of using the machine.