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Chapters
2: Force and Pressure
3: Light
4: Heat
5: Electricity
6: Sound
7: Magnetism
8: Universe and Space Science
9: Matter around us
10: Changes around us
11: Air
12: Atomic Structure
13: Water
14: Acids and Bases
15: Chemistry in Everyday Life
16: Microorganisms
17: Plant Kingdom
18: Organisation of Life
19: Movements in Animals
20: Reaching the Age of Adolescence
▶ 21: Crop Production and Management
22: Conservation of Plants and Animals
23: Libre Office Calc
![Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 21 - Crop Production and Management - Shaalaa.com](/images/science-english-class-8-tn-board_6:5f2b1b2038084cf381bfa42c826a928c.jpg "Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 21 - Crop Production and Management")
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Solutions for Chapter 21: Crop Production and Management
Below listed, you can find solutions for Chapter 21 of Tamil Nadu Board of Secondary Education Samacheer Kalvi for Science [English] Class 8 TN Board.
Samacheer Kalvi solutions for Science [English] Class 8 TN Board 21 Crop Production and Management Exercises [Pages 257 - 258]
Choose the best answer
The process of placing seeds in the soil is called as
ploughing
sowing
crop production
crop rotation
Organism that control insects and pests of plant crops is
bio-pesticides
bio-fertilizers
earthworms
neem leaves
The method in which water flows over the soil surface and allow it to infiltrate is
irrigation
surface irrigation
springler irrigation
drip irrigation
Effective microorganism preparation is not used in
seed treatment
foliar spray
soil treatment
bio-predators
Which of the following is not present in Panchagavya?
Cow dung
Cow’s urine
Curd
Sugar
Fill in the blanks
The process of actively growing seedling from one place and planting in the main field for further growth is called ______.
________ is a plant growing in a place where it is not wanted.
The chemicals used for killing the weeds or inhibiting their growth are called as ______.
______ seeds transfer their unique characteristics to the descents.
______ centers serve as the ultimate link between ICAR and farmers.
Several popular high-yielding varieties of major crops have been developed by ______.
Match the following.
| Bio-pesticide | Neem Leaves |
| Bio-predators | Bacillus thuringiensis |
| Bio-fertilizer | Control white flies |
| Bio-indicators | Improve soil fertility |
| Bio-repellants | Quality of environment |
Answer briefly.
Define ploughing.
Name the methods of sowing.
What is foliar spray?
Give a brief account on Krishi Vigyan Kendra.
What is bio-indicator? How does it help human beings?
What do you mean by weeding?
What is crop rotation?
What is green manure?
Answer in detail.
Explain the agricultural practices.
Give a detailed account on irrigation.
What is weed? Explain the different methods of weed control.
Solutions for 21: Crop Production and Management
Samacheer Kalvi solutions for Science [English] Class 8 TN Board chapter 21 - Crop Production and Management
Shaalaa.com has the Tamil Nadu Board of Secondary Education Mathematics Science [English] Class 8 TN Board Tamil Nadu Board of Secondary Education solutions in a manner that help students grasp basic concepts better and faster. The detailed, step-by-step solutions will help you understand the concepts better and clarify any confusion. Samacheer Kalvi solutions for Mathematics Science [English] Class 8 TN Board Tamil Nadu Board of Secondary Education 21 (Crop Production and Management) include all questions with answers and detailed explanations. This will clear students' doubts about questions and improve their application skills while preparing for board exams.
Further, we at Shaalaa.com provide such solutions so students can prepare for written exams. Samacheer Kalvi textbook solutions can be a core help for self-study and provide excellent self-help guidance for students.
Concepts covered in Science [English] Class 8 TN Board chapter 21 Crop Production and Management are The Green Revolution, Soil Formation and Preparation for Agriculture, Fertilizers, Manuring (Biomanuring), Improved methods of agriculture, Weeding, Harvesting of Crops, Storage of Food Grains, Rotation of Crops, Seed Bank, Bio-indicators, Agriculture Research Institutions, Foliar Sprays, Bio-control Methods, Crop and Its Types, Agricultural Implements, Food Storage and Conservation of the Environment, Methods to Replenish Nutrients in Your Soil, Food Security, Agricultural Assistance Programme, Fertilizers.
Using Samacheer Kalvi Science [English] Class 8 TN Board solutions Crop Production and Management exercise by students is an easy way to prepare for the exams, as they involve solutions arranged chapter-wise and also page-wise. The questions involved in Samacheer Kalvi Solutions are essential questions that can be asked in the final exam. Maximum Tamil Nadu Board of Secondary Education Science [English] Class 8 TN Board students prefer Samacheer Kalvi Textbook Solutions to score more in exams.
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