What is the need for improvement in food production? Need for higher crop yield 4) One crop needs comparatively lesser water and nutrients than the other. Higher yield: Crop variety improvement’s main goal is to increase the productivity of the crop. Thus, we can improve crop quality and quantity by incorporating the genes with desirable traits. Another impact of population on food crop production is land exploitation. Resistant variety can withstand these factors and give a high yield. What do you mean by genetically modified crops? (v) Desired agronomic traits: Crops which contain desired agronomic traits (height, branching, leafs), sets high production. However, the quality and quantity of the crop produced shouldn’t be compromised due to the limited resource and present scenario. The topics that are covered under this chapter include: Improvement in crop yields (1 question) Crop variety improvement (2 questions) Crop production management (3 questions) Crop protection management (3 questions) (ii) Improved quality: The quality of crop products vary from crop to crop. Related Concepts. Quality seeds of improved varieties are used for their commercial production. Grains are the major source of human food. Food crops are crops that contribute to the world’s major food supply. Chapters 65. In the first part of the chapter, the students will learn about different types of fertilizers and how to use them. Crossing can be of following types: Genetic Modification: When a gene with a desirable character is introduced into a plant or animal, it is called genetic modification. Some farmers do not have capital to buy seeds or latest farm equipments. crop variety improvement For this purpose, a crop variety is chosen which can give good yield. (ii) Improved quality: The quality of crop products vary from crop to crop. In order to meet the demands with limited resources, we need to apply a greater effort. Food provides us with the nutrients and energy that we need for the proper functioning and growth of the body. Crop variety improvement is the primary step to improve food crop production. The crop is selected by breeding for various useful characteristics; like disease resistance, response to fertilizers, product quality and high yields. Watch Queue Queue Legumes and dried beans have a longer shelf-life and are cheap to buy. 1. 2) Improved quality: Quality considerations of crop products varies from crop to crop e.g. | EduRev Class 9 Question is disucussed on EduRev Study Group by 126 Class 9 Students. Describe the mechanism of crop variety improvement. 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Let us have a look at food crops and different methods of crop variety improvement. Farming practices among Indian farmers can be divided into three types, viz. To develop high yielding variety. Class 9 Science Chapter 15 Improvement in Food Resources Importance This chapter deals with teaching students about different types of crops and how we can improve their production. Resistance: To develop resistance to both living and non-living factors. CBSE Class 9 Science (Biology) Chapter 15 Improvement in Food Resources Exercise Questions with Solutions to help you to revise complete Syllabus and Score More marks. Required fields are marked *. What are the various ways to improve the variety of crops? Crop Variety Improvement. Legumes and dried beans have a longer shelf-life and are economical. Plant Introduction: Plant introduction usually means the introduction of the plants from places … 4. Crop variety improvement, crop production improvement and crop protection management are three major ways to improve food crops production. affect the net crop production. and abiotic factors like hot, cold, drought, salinity, etc. Hence, we need to be very selective about seeds for its acceptance. Describe the important factors for which variety improvement is done. 2. Crop Production Management ,Improvement in Food Resources - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 9 on TopperLearning. Your email address will not be published. To know more about crop variety improvement and food crops production, visit BYJU’S website. This helps in a higher yield in less expenditure. Here, BT stands for Bacillus thuringiensis which is a bacteria that produces various toxins against different types of pests. Crop production is more like a business in many countries. This is done by hybridisation. There are two different categories of cropping pattern: 1. Crop improvement by hybridisation: Hybridisation refers to crossing between genetically dissimilar plants. Enroll Now For FREE. This crossing may be intervarietal (between different varieties), interspecific (between two different species of the same genus) or intergeneric (between different genera). This definition not only talks about the improved availability of food but also of access of food to the masses. This video is unavailable. A pest causes damage to our crops by feeding. It helps in the development of crops with desired traits such as high yields, disease resistance, quality product and response to fertilizers. It helps in improving the yield of cotton. Crop Variety Improvement. BT cotton is a good example of genetically modified crop. This video is unavailable. Explain the ways by which crop-production can be increased. Grains are a major source of human food. Inter specific Hybridization. Science NCERT Grade 9, Chapter 15, Improvement in Food Resources as the name suggests, deals with concepts of various techniques of improvement carried out in different aspects of food resources. Crop production improvement, Crop protection improvement. The variety improvement is done for the following reasons. Some farmers may have enough capital to buy high yielding varieties of seeds and latest farm equipments. Thus, they can be used in seasons when food is scarce. The short maturity period of crops helps farmers in multiple rounds of cultivation in less expenditure during a short period. This method is more scientific and results in genetically modified food crops. Crop varieties should be resistant to these stresses, to significantly improve the crop production, g., MUW 318 is a HYV (high yielding variety) of wheat which is released for cultivation in non-tradional areas as Nilgiri and Palini hills and resistant to all the rusts. Improvement in Food Resources Class 9 Extra Questions Long Answer Questions. These varieties are multiplied and supplied to farmers. The new varieties should be able to produce maximum quality and quantity under different conditions and regions. Watch Queue Queue. Major activities for improvement in crop production can be classified into three groups which are as follows: For this purpose, a crop variety is chosen which can give good yield. Crop variety improvement; Crop production management; Nutrient management; Crop variety improvement. ... Class 10 Class 12. Subjects 9. The Crop varietal improvement: a) ... between different varieties. It involves giving away some insurance against failure of one of the crops. Cropping pattern. Thus, the overall variety of improvement makes the situation more profitable. The requirements cotton with an ability to ward off attacks from different types of pests... Shelter, clothing, etc has shallow roots crop varieties have resulted hybridization... 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