Ploughing pattern
- 1. PLOUGHING PATTERN Presented by Er. VIPIN KUMAR Asian Institute of Technology Department Agricultural System Engineering SERD
- 2. Outline • Plowing • Plowing patterns
- 3. Plowing •Land preparation or soil tillage is an expensive and critical management operation, central for the success of the cropping season. •There are several patterns that can be used when tilling a field. Application of agriculture implements differs in different plowing patterns. •An optimal tillage pattern reduces the time spent in non-productive work • One of the most important objectives of a tillage pattern is to minimize the number of turns and maximize the length of the tillage runs •Application of agriculture implements differs in different plowing patterns
- 4. Ploughing pattern •Determined by implement (one-way plow can only throws soil in one direction) •Determined by desired field levelness-headland most level •Determined by field shape-long narrow fields •Determines efficiency (headland pattern most efficient)
- 5. There are several patterns that can be used when tilling a field. These are: 1.Circuitous pattern (Starts at outside and leaves a furrow in the middle of field) • 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 moldboard ploughs, disc ploughs and offset disc ploughs
- 7. 2. Headland Pattern a. One way headland pattern • Starts at one end and leaves flat even field • The field is ploughed 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 • This system is used for bigger pieces of land and can only be used for tined implements, rotary tillers, harrows and reversible ploughs • It is usually the most field efficient system and if equipment is correctly set up and operated should not leave furrows in the field
- 9. b. Gathering headland pattern • Starts In middle and leaves a level field • This system requires ploughing to begin in the center of the field and works out to the edges • It requires some measurement of the field to establish the center point and if done correctly leaves a level field with drainage channels on the edges • Furrow slices are turned to the center of the field • This system can be used with all types of ploughs
- 11. c. Casting headland pattern • This system is similar to the gathering headland pattern but requires ploughing to begin at the edges • Furrow slices are turned to the edges of the field. This system can also be used with all types of ploughs
- 12. Continuous ploughing method • In normal conditions, the continuous ploughing method is (fig.3) considered very convenient and economical. • This is a method usually used in which the tractor and plough never run idle for more than three quarter land width along the headland and never turn in a space narrower than a quarter land width. • In this method, first the headland is marked and the first ridge is set up at three quarter of a land width from the side. • The other ridges are set at full width over the field. The operator starts ploughing between the first ridge and the side land. • The operator continues to turn left and cast in the three quarter land until a quarter land width of ploughing is completer on each side. • At this stage, it is important to lift the plough to half depth for last trip down the side land of the field. • This leaves a shallow furrow where the finish comes.
- 14. Round and round ploughing • In this method, the plough moves round and round a field • This system is adopted under conditions where ridges and furrows interfere with cultivation work • The field can be started in two ways a) Starting at the Centre • A small plot of land is marked in the middle of the field and it is ploughed first • After that, the plough works round this small plot and the entire plot is completed • This is not a very economical method b) Starting at the outer end • Tractor starts ploughing at one end of the field and then moves on all the sides of the plot and comes gradually from the sides to the Centre of the field • Wide diagonals are left unploughed to avoid turning with the plough • There are no back furrows in this method • Conventional ploughing is usually done by this method
- 15. One way ploughing • This system requires the use of a special type of plough known as reversible plough or one way plough • Such a plough turns furrows to the left or right • After the headland has been marked, the operator plough along a straight side land mark • At the end of the first trip, he turns his tractor in a loop and returns down the same furrow • No dead and back furrows are left in the field. In gently sloping fields, this method is suitable
- 16. Thank you