Crop Protection Management
Field crops are infested by a large number of weeds, insect pests, and diseases. If weeds and pests are not controlled at the appropriate time, then they can damage the crops so much that most of the crop is lost. Weeds, insects, and diseases can be controlled by various methods. First is: the use of pesticides. It includes herbicides, insecticides, and fungicides. These chemicals are sprayed on crop plants or used for treating seeds and soil. However, excessive use of these chemicals creates problems, since they can be poisonous to many plant and animal species and cause environmental pollution. Another is mechanical removal.
NCERT Notes for Class 9 Science Chapter 12: Improvement in Food Resources
NCERT Notes for Class 9 Science Chapter 12: Improvement in Food Resources: The food that we eat gives us protein, fats, carbohydrates, vitamins, and minerals, which we require for body development, growth, and health. Both plants and animals are major sources of food for us and we obtain most of this food from agriculture and animal husbandry.
Notes on Improvement in Food Resources Chapter 12 of Class 9 discusses the various aspects of agriculture, including crop production, animal husbandry, fisheries, and also the different techniques and methods used to enhance food production to meet the growing demands of a growing population in our country. However, it is important that we should increase food production without degrading our environment and disturbing the balance of maintaining it. Hence, there is a need for sustainable practices in Agriculture and Animal husbandry.