agsci module 2 tillage

– is performed to: • Open up any cultivable land • Prepare a seedbed • Break or loosen compact soil

equipment used in primary tillage

– is performed: • Break soil clods into finer soil particles • Crushed weeds and other vegetation • Improve soil tilth and granulation

equipment used in secondary tillage

s performed: • When crops are planted and established • Control weed in between the rows of crops

equipment used in inter row cultivation

a pattern which Plowing begins at the edge of the field and works toward the center of the field always throwing the soil towards the outside of the field. It is the most commonly used system for ploughing in Asia. It is commonly used with moldboards, discs

This system is used for bigger pieces of land and can only be used for tined implements, rotovators, harrows and reversible ploughs.

• Most field efficient system

plowed in runs parallel to each other. It starts at one boundary of the field and ends at the opposite with turns being made on the headlands.

ploughing to begin in the center of the field and works out to the edges.

• Requires plowing to begin at the edges. • Furrow slices are turned to the edges of the field

disc angle for disc plow

tilt angle for disc plow

is the circular concave revolving steel plate used for cutting the soil clods.

each set of discs that are mounted on a common shaft

a square headed bolt from the other end, a set of discs are mounted on the gang bolt

two gangs placed end to end.

- consist of two or more gangs. A set of two or more gangs follow behind the set of the other one or two. The gang throw the soil in opposite direction

comprise of four gangs angled in opposite direction

two gangs of concave discs mounted on a frame, one behind the other