Examples: Rice, maize Rabi crops: Grown in winter season. Levelling •It involves breaking big lumps of soil and levelling it.  It is formed by decomposition of vegetable and animal wastes. What do you mean by the term crop?  A Persian wheel consists of a large wooden wheel with several buckets arranged on its outer rim. Winnowing is the process of separating grains from the chaff. Create a presentation in PowerPoint. PowerPoint provides an easy-to-use multimedia presentation production system, which you will no doubt enjoy learning and which you and your students will find useful for individual or group projects of all kinds.  Promotes better development of roots and shoots. (d) Crop rotation. Precautions for Sowing Seeds Seeds should be sown at the right depth in the soil suitable for germination.  One of the arms of the iron plough which is wedge shaped penetrates the soil. Advantages of Crop Rotation  Allows soil to recover its lost nutrients. One of the things that will help us increase food production is better crop production and management. Design a Great PowerPoint Presentation Designing a great PowerPoint presentation isn't that hard once you know what’s involved in the process and have the exact steps to follow. Harrowing •It is a method to destroy germinating weeds. 5. Spraying weedicides •A solution of weedicides such as 2,4-D, MCPA and Butachlor is sprayed on the standing crops. Removal of Weeds  Wild and undesirable plants which grow in crop fields and compete with crops for space, soil, nutrients, water and sunlight are called weeds. ME3105 Production Management 9 | P a g e 4.8.  The swing basket is an ancient water lifting device. e.g. Kharif crops are: Paddy, maize, soyabean, groundnut, cotton etc. These methods are based on cattle or human labour therefore these are cheaper however these are less efficient.Modern Methods of Irrigation: Sprinkler System: This system consists of vertical pipes provided with rotating nozzle on top and are joined to main pipeline at regular intervals. Fertilisers are chemical substances produced in chemical factories and are rich in particular nutrient. www.topperlearning.com 5, SCIENCE CROP PRODUCTION AND MANAGEMENT Types of Fertilisers Natural Fertilisers Manure  Dead and decaying vegetable matter, waste from farms, household waste, excreta of animals form manure. In business and other fields, good presentation design is critical for the effective communication of ideas with clarity and maximum impact. Growing different crops alternately, one after another in the same land is called crop rotation.Irrigation: Pulley-system, chain pump, dhekli, rahat or level system are some of the methods to bring out water from wells, lakes or canals and irrigate the land. They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Jul 18, 2020 - S Chand Science Class 8 Solutions Chapter 1 Crop Production and Management Lakhmir Singh Science Class 8 Chapter 1 Very Short Answer Type Questions Question 1. 1.2 (b)] is used for sowing with the help of tractors. In the field all plants, other than crop plants are called weeds. This tool sows the seeds uniformly at proper distances and depths. When leguminous crops such as pulses are grown in the same field, the crops with nitrogen-fixing bacteria enrich the soil with nitrogen compounds and increase its fertility. cbse 10th class result 2017 released soon at official.  Helps to reduce the use of chemical fertilisers. You've just learned how to do a PowerPoint presentation, step-by-step.  Leguminous plants help to replenish nitrogen in the soil. Hoe Cultivator Sowing  The process of scattering seeds in the soil for growing crop plants is called sowing. •Benefits of ploughing •Brings fresh nutrients to the surface.  This method results in non-uniform distribution of seeds and hence, affects productivity. Download free printable Crop Production and Management Worksheets to practice. Spray Technology.  Seeds are put into the funnel of the seed drill which is fitted at the back of the plough. Examples: Ginger, pine Agriculture is the art and science of cultivating soil, producing crops, rearing animals for food and other useful products.  The basket is raised and water is discharged in the crop field. •Weeds can be removed from crop fields by pulling them out with hands. Ongoing Feedback and Communication. 7. 20.9. Similar product is manufactured and hence, standard method and time standard is to be analysed.  It is used for crops which require a large amount of water to grow.  Organic substances are decomposed by bacteria and are converted into humus. Crop Production and Management Class 8 Science Chapter 1. Adding manure in soil is called Manuring.Adding Fertilisers: Another way of enriching soil with nutrients is by use of fertilisers. NCERT Grade 8 Science Chapter 1 Crop Production and Management deals with agricultural practices associated to production of crops and their management. 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