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Questions and Answers
Which type of plow is directly connected to the tractor’s three-point linkage and has its rear end supported by furrow and land wheels?
What type of plow is hitched to the drawbar or lower links of the tractor, supported by two or three wheels?
In terms of depth control, which type of plow is equipped with hydraulic lines and cylinders?
Which plow type depends on the tractor for general operation and is mounted on the tractor's three-point linkage?
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What is a common feature of all the mentioned types of plows in terms of power requirements?
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What is the main purpose of a subsoiler?
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What is the function of a wear shin attached to the shank of a subsoiler?
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Which part of a subsoiler is primarily used for attaching a tillage tool to a beam?
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Which type of subsoiler requires guide wheels for transport?
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What is soil abrasion caused by?
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What does a subsoiling implement aim to achieve by working at significant depths?
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What is the primary objective of tillage machinery as discussed in the module?
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Which of the following is NOT a basic operation associated with primary tillage machinery?
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What does agricultural mechanization involve according to the module?
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Which of the following is NOT a primary objective of tillage machinery discussed in the module?
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What is the main focus of primary tillage as outlined in the module?
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In tillage machinery operations, what does 'deformation of soil mass' refer to?
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What is the focus of the Bachelor of Science in Agricultural and Biosystems Engineering program at Quirino State University?
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Which aspect is covered in the topic 'Power Requirement and Field Efficiency of Various Tillage Implement'?
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What do students study under 'Additional Formulas used in Solving problems in Tillage Machinery'?
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In the context of tillage machinery, what does 'Implement Cutting Width' refer to?
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Which area does the Bachelor of Science in Agricultural and Biosystems Engineering program not specifically focus on?
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What is one of the main themes emphasized by Quirino State University's Agricultural and Biosystems Engineering program?
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What is the primary purpose of a disc harrow in farming operations?
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Which term refers to the transverse distance between two adjacent disc edges in a disc harrow?
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How many gangs of concave steel discs can a disc harrow consist of?
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What type of shank is typically used in primary tillage operations?
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Which implement is intended to create refined soil conditions following primary tillage operations?
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What does a concave disc in a disc harrow primarily do?
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Study Notes
Types of Moldboard Plows
- Tractor-mounted Moldboard Plow: mounted on the tractor's three-point linkage and depends on the tractor for its operation
- Semi-mounted Moldboard Plow: front end connected to the tractor's three-point linkage, rear end supported by furrow and land wheels, with hydraulic lines and cylinders for lifting and/or depth control
- Trailing Moldboard Plow: hitched to the drawbar or lower links of the tractor, supported by two or three wheels, with hydraulic lines and cylinders for lifting and/or depth control
Performance Requirements
- Maximum depth of cut of the plow at the recommended power range specified by the manufacturer shall be attained
- Approximate four-wheel tractor engine power for specific moldboard plow sizes under average operating conditions is given in Table 1
Disk Plow
- Ripper point: tool attached to the shank of the subsoiler to cut through the soil
- Shank: structural member primarily used for attaching a tillage tool to a beam
- Soil Abrasion: scratching, cutting, or abrasing of materials caused by the action of soil
- Subsoiler: implement for intermittent tillage at depths sufficient to shatter compacted subsurface layers
- Subsoiling: deep tillage with at least 350 mm depth for the purpose of loosening soil for root growth and/or water movement
- Transverse Tool Bar: part of the main frame to which shank assemblies are attached
- Wear shin: metal plate attached to the shank to reduce abrasion and enhance durability of the shank
Classification of Subsoiler
- According to type of mounting:
- Drawn type subsoiler: main frame mounted far behind the tractor, guide wheels necessary for transport
- Three-point hitch mounted: main frame mounted to the rear of the tractor using the 3-point hitch linkages
- According to type of shank:
- Straight shank
- Curved or parabolic shank
Tillage Machinery
- Definition: tillage is the manipulation of soil for any desired purpose
- Primary Objectives:
- Elimination and permanent control of the original vegetation (weeds)
- Creation of conditions favoring the germination and emergence and growth of the cultivated plants
- Conservation and improvements of the soil as the growth medium for cultivated crops
- Basic Operations:
- Reduction of volume (compaction) of the soil
- Cutting of soil
- Shear plane formation (crumbling, pulverization) in the soil
- Transport or movement of soil from one place to another place
- Deformation of soil mass
Disc Harrow
- Concave disc: circular concave steel plate used for cutting and inverting the soil
- Disc Spacing: transverse distance between two adjacent disc edges
- Disc harrow: implement used to pulverize the soil to attain a better soil tilth for the seed germination and growth
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Description
This module covers the concepts of tillage and tillage machinery, with a focus on Primary tillage. Topics include defining tillage, understanding its objectives, learning about primary tillage, and the machinery used in the process.
