Agricultural and Biosystems Engineering Module 3: Tillage Machinery
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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?

  • Tractor-mounted Moldboard Plow
  • Trailing Moldboard Plow
  • Semi-mounted Moldboard Plow (correct)
  • Disk Plow

    • What type of plow is hitched to the drawbar or lower links of the tractor, supported by two or three wheels?

  • Semi-mounted Moldboard Plow
  • Disk Plow
  • Tractor-mounted Moldboard Plow
  • Trailing Moldboard Plow (correct)

    • In terms of depth control, which type of plow is equipped with hydraulic lines and cylinders?

  • Trailing Moldboard Plow (correct)
  • Tractor-mounted Moldboard Plow
  • Semi-mounted Moldboard Plow
  • Disk Plow

    • Which plow type depends on the tractor for general operation and is mounted on the tractor's three-point linkage?

    <p>Tractor-mounted Moldboard Plow</p> Signup and view all the answers

    What is a common feature of all the mentioned types of plows in terms of power requirements?

    <p>They attain maximum depth of cut at recommended power ranges</p> Signup and view all the answers

    What is the main purpose of a subsoiler?

    <p>To shatter compacted subsurface layers</p> Signup and view all the answers

    What is the function of a wear shin attached to the shank of a subsoiler?

    <p>To enhance durability of the shank</p> Signup and view all the answers

    Which part of a subsoiler is primarily used for attaching a tillage tool to a beam?

    <p>Shank</p> Signup and view all the answers

    Which type of subsoiler requires guide wheels for transport?

    <p>Drawn type subsoiler</p> Signup and view all the answers

    What is soil abrasion caused by?

    <p>Action of soil</p> Signup and view all the answers

    What does a subsoiling implement aim to achieve by working at significant depths?

    <p>Loosening soil for root growth and water movement</p> Signup and view all the answers

    What is the primary objective of tillage machinery as discussed in the module?

    <p>Improving soil conditions for cultivated plants</p> Signup and view all the answers

    Which of the following is NOT a basic operation associated with primary tillage machinery?

    <p>Transport or movement of seeds within the soil</p> Signup and view all the answers

    What does agricultural mechanization involve according to the module?

    <p>Development and extension of appropriate agricultural tools and machinery</p> Signup and view all the answers

    Which of the following is NOT a primary objective of tillage machinery discussed in the module?

    <p>Transporting water across soil layers</p> Signup and view all the answers

    What is the main focus of primary tillage as outlined in the module?

    <p>Enhancing conditions for cultivated plants' growth</p> Signup and view all the answers

    In tillage machinery operations, what does 'deformation of soil mass' refer to?

    <p>Changing the shape or structure of the soil</p> Signup and view all the answers

    What is the focus of the Bachelor of Science in Agricultural and Biosystems Engineering program at Quirino State University?

    <p>Sustainable Development</p> Signup and view all the answers

    Which aspect is covered in the topic 'Power Requirement and Field Efficiency of Various Tillage Implement'?

    <p>Power Calculation and Working Efficiency</p> Signup and view all the answers

    What do students study under 'Additional Formulas used in Solving problems in Tillage Machinery'?

    <p>Power Requirement Calculations</p> Signup and view all the answers

    In the context of tillage machinery, what does 'Implement Cutting Width' refer to?

    <p>Width of the Implement's Cutting Edge</p> Signup and view all the answers

    Which area does the Bachelor of Science in Agricultural and Biosystems Engineering program not specifically focus on?

    <p>Implement Cutting Width Details</p> Signup and view all the answers

    What is one of the main themes emphasized by Quirino State University's Agricultural and Biosystems Engineering program?

    <p>Sustainable Development Principles</p> Signup and view all the answers

    What is the primary purpose of a disc harrow in farming operations?

    <p>Inverting the soil</p> Signup and view all the answers

    Which term refers to the transverse distance between two adjacent disc edges in a disc harrow?

    <p>Disc Spacing</p> Signup and view all the answers

    How many gangs of concave steel discs can a disc harrow consist of?

    <p>One</p> Signup and view all the answers

    What type of shank is typically used in primary tillage operations?

    <p>Straight shank</p> Signup and view all the answers

    Which implement is intended to create refined soil conditions following primary tillage operations?

    <p>Disc Harrow</p> Signup and view all the answers

    What does a concave disc in a disc harrow primarily do?

    <p>Cuts and inverts the soil</p> Signup and view all the answers

    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.

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