Open Access

Different scales are used in the technical designs throughout the book , depending on what was most appropriate for the technical design and in accordance with the size of the paper used (some are on A3-sized paper, which is 29.7 x 32 cm, and others on A4, which is 21 x 29.7 cm). It is fundamental to understand that this allows the reader to take measurements directly from the paper since the design is scaled to the paper size. We recommend that you always use A3 size paper when printing the scaled technical designs, and/or be sure to print the technical designs on the same size of paper for each printing. The use of a different paper size than A3 will incur into measurement errors by not following these instructions.

An open-source publication targeted to machinery manufacturers, engineers, researchers and development practitioners, this book describes and provides technical designs for small-scale agricultural machinery developed or produced in Bangladesh to support the sustainable intensification of agriculture by smallholder farmers. The focus is on smart, scale-appropriate equipment - particularly for use with two-wheel hand tractors suited for the small plots typical throughout Bangladesh, but also in many countries where small-holder farmers predominate. Most of the machinery is designed for use with conservation agriculture crop management practices and allows precise and timely seeding and fertilization of crops with reduced soil disturbance. Each chapter includes written descriptions and photographs of the machines, outlining their purpose, performance and field use, followed by detailed, to-scale technical designs and other information to facilitate production of standardized copies or improvements in the original designs. The implements described include zero tillage and strip till seed and fertilizer drills, bed planters, axial flow irrigation pumps, strip tillage blades, improved furrow openers and seed metering mechanisms - all specialized for use with two-wheel tractors.

Conservation Agriculture Program

Text in English

DSpace M

INT3222|INT3034|CJUS01|INT3262|I1705496

CIMMYT Publications Collection

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