3. Nutrient Management: Nutrient management is a system used by farmers to manage the amount, form, placement, and timing of the application of nutrients (whether as manure, commercial fertilizer, or other form of nutrients) to plants. The purpose is to supply plant nutrients for optimum forage and crop yields, to minimize nonpoint source pollution (runoff of pollutants to surface water) and contamination of groundwater, and to maintain and/or improve the condition of soil.
4. Nutrient management is the practice of using nutrients wisely for optimum economic benefit, while minimizing impact on the environment. Nutrient management is managing crop fertility inputs and other production practices for efficient crop growth and water quality protection. Nutrient management plans for site- specific situations minimize undesired environmental effects while optimizing farm profits and production.
5. On The Basis Of Text-Book Just as we humans need nutrients for the development of body , for growth , for well-being , plants also need nutrients for the same reasons. Nutrients are supplied to plants by air , water and soil . There are total 16 nutrients that are needed by the plants. Oxygen and carbon comes from air , hydrogen comes from water and other 13 nutrients are provided by soil. Plants require both macro and micro nutrients.
6. Nutrients supplied by air,water and soilSOURCE: NUTRIENTS:Air : Carbon and Oxygen.Water : Hydrogen and Oxygen.Soil : i)Macro-nutrients: Nitrogen, Phosphorus, Potassium, Calcium, Magnesium, Sulphur. ii)Micro-nutrients: Iron, Manganese, Boron, Zinc, Cop per, Molybdenum and Chlorine.
8. What is Fertilizers??? Fertilizer is any organic or inorganic material of natural or synthetic origic that is added to soil to supply one or more plant nutrients essential to the growth of plants.
9. Uses Of Fertilizers NUTRIENTS Both natural and man-made fertilisers are measured by the three major nutrients that are in them. These are:Nitrogen - assists plant in leaf and stem growth.Phosphorus - assists young plants and root crops to develop good.Potassium - assists plants to produce flowers and fruit. They give rise to a healthy plant, ensures good vegtative growth. Fertilizers are a factor in the higher yeild of high cost farming.
10. Harms By Fertilizer Continuous and execess use of fertilizers ,destroys soil fertility. The use of chemical fertilizers can have adverse effects on waterways caused by chemical run off of the excess fertilizer. The result is oxygen depletion causing the fish to die. Excess nitrogen used in crop fertilization can contribute to the release of greenhouse gases such as carbon dioxide and nitrous oxide into the atmosphere. continuous use of chemical fertilizers on soil depletes the soil of essential nutrients. As a result, the food produced in these soils have less vitamin and mineral content.
11. Proper way of spreading fertilizer Fertilizers should be applied carefully in terms of proper time, dose, etc. Test the soil regularly and find the nutrients needed. Fertlisers should be spread after rainfall so to prevent washing away of nutrients. Use mulch lawn mower. This means that the mower recycles cut grass blades and leaves back into the soil; no valuable compost is gone to waste!
13. WHAT IS MANURE ??? Manure is organic matter used as organicfertilizer in agriculture. Manures contribute to the fertility ofthe soil by adding organic matter and nutrients, suchas nitrogen, that are trapped by bacteria in the soil. Higherorganisms then feed on the fungi and bacteria in a chain oflife that comprises the soil food web . It is also a productobtained after decomposition of organic matter like cow-dungwhich replenishes the soil with essential elements and addhumus to the soil.
14. USES OF MANURE Animal dung has been used for centuries as a fertilizer for farming, as it improves the soil structure (aggregation), so that it holds more nutrients and water, and becomes more fertile. Animal manure also encourages soil microbial activity, which promotes the soils trace mineral supply, improving plant nutrition. It also contains some nitrogen and other nutrients that assist the growth of plants.
15. COMPOST & VERMI COMPOST Compost is organic matter that has been decomposed and recycled as a fertilizer and soil amendment. Compost is a key ingredient in organic farming. At the simplest level, the process of composting simply requires making a heap of wetted organic matter (leaves, "green" food waste) and waiting for the materials to break down into humus after a period of weeks or months. Vermi compost is the product or process of composting using various worms, usually red wigglers, white worms, and earthworms to create a heterogeneous mixture of decomposing vegetable or food waste, bedding materials, and vermicast. Vermicast, also called worm castings, worm humus or worm manure, is the end-product of the breakdown of organic matter by an earthworm .
16. GREEN MANURE In agriculture, a green manure is a type of cover crop grown primarily to add nutrients and organic matter to the soil. Typically, a green manure crop is grown for a specific period of time, and then ploughed under and incorporated into the soil while green or shortly after flowering. Green manure crops are commonly associated with organic agriculture, and are considered essential for annual cropping systems that wish to be sustainable. Traditionally, the practice of green manuring can be traced back to the fallow cycle of crop rotation, which was used to allow soils to recover.
17. The seven nutrient usedby plants in small quantity is called_______.
18. The seven nutrient used by plants in small quantity iscalled micronutrients .
19. Nutrient not supplied by soil in plant is. a)hydrogen b)potassium c)calcium d)nitrogen
20. Nutrient not supplied by soil in plant is. a)hydrogen b)potassium c)calcium d)nitrogen
21. Fertilizers should be applied carefully in terms of _____ ,_____ ,and observing pre-and post-application precautions for their complete utilization.
22. Fertilizers should be applied carefully in terms of properdose, time , and observing pre-and post-application precautions for their complete utilization
23. Compost is also prepared by usingearthworms to hasten the process of decomposition of plant and animal refuse. This is called _____ . a)composting b) ammomnolysisc)reduction d) vermi -compost
24. Compost is also prepared by usingearthworms to hasten the process of decomposition of plant and animal refuse. This is called _____ . a)composting b) ammomnolysis c)reduction d) vermi -compost
25. fertilizers supplies _______,_______ and nitrogen to plant. a)nitrogen, zinc b)zinc, potassium c)phosphorus, chlorine d)phosphorus, potassium
26. fertilizers supplies _______,_______ and nitrogen to plant. a)nitrogen, zinc b)zinc, potassium c)phosphorus, chlorine d)phosphorus, potassium