Class 8 Exam > Class 8 Videos > Science Class 8 > Ploughing and Levelling
Ploughing and Levelling Video Lecture | Science Class 8
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FAQs on Ploughing and Levelling Video Lecture - Science Class 8
| 1. What is ploughing and levelling? |  |
Ans. Ploughing and levelling are agricultural practices used to prepare the soil for cultivation. Ploughing involves turning over the top layer of soil using a plough, which helps to loosen the soil and bury any existing crop residues or weeds. Levelling, on the other hand, is the process of smoothing out the soil surface to create an even and uniform field for planting.
| 2. Why is ploughing important in agriculture? | |
Ans. Ploughing plays a crucial role in agriculture for several reasons. Firstly, it helps in breaking up the compacted soil, allowing better root penetration and the growth of crops. Secondly, ploughing helps to bury crop residues and weeds, preventing them from interfering with the growth of new plants. Additionally, ploughing also improves soil aeration, water infiltration, and nutrient availability, which are essential for healthy plant growth.
| 3. What are the different types of ploughs used in agriculture? | |
Ans. There are several types of ploughs used in agriculture, including the moldboard plough, disc plough, chisel plough, and rotary plough. The moldboard plough is the most common type, which consists of a curved metal blade that turns the soil over. Disc ploughs have multiple circular blades that cut and turn the soil, while chisel ploughs have straight, narrow blades that penetrate the soil without turning it. Rotary ploughs use rotating tines or blades to dig into the soil and break it up.
| 4. How does levelling benefit crop cultivation? | |
Ans. Levelling is important for crop cultivation as it helps to create a uniform field surface, which has various benefits. Firstly, an even field surface ensures that water is distributed evenly, preventing waterlogging or runoff in certain areas. This promotes better water absorption by the plants and reduces the risk of soil erosion. Secondly, levelling aids in the proper distribution of fertilizers and other agricultural inputs, ensuring uniform growth and yield across the field. Lastly, it facilitates easier machinery operations, such as planting, irrigation, and harvesting.
| 5. What are the different methods of levelling agricultural land? | |
Ans. There are different methods of levelling agricultural land, depending on the topography and requirements. Some common methods include manual levelling, land grading using earthmoving equipment, laser leveling, and GPS-based leveling. Manual levelling involves physically redistributing soil using tools like shovels and rakes. Land grading with machinery involves using bulldozers or graders to cut and fill soil to achieve a desired slope or contour. Laser leveling uses laser-guided equipment to accurately level the field, while GPS-based leveling uses satellite technology for precise land grading.
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Nov 27, 2024 Last updated |
Video Description: Ploughing and Levelling for Class 8 2024 is part of Science Class 8 preparation.
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