sustainable agriculture

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Information about sustainable agriculture
Science-Technology

Published on May 28, 2011

Author: karinita3

Source: authorstream.com

Slide 1: Sustainable Agriculture Lisa H Ms Zita SVN3M 2010-05-13 What is agriculture : What is agriculture Agriculture is farming. It produces crops and almost everything we eat. Mostly farmer is raising plant crops, such as fruits, vegetables and animals like cows and pigs. This is where we get our foods and meats. Sustainable agriculture is a way of raising food that is healthy to people and animals, it does not harm the environment. Sustainable agriculture : Sustainable agriculture Sustainable agriculture is a way of raising food that is healthy to people and animals. It does not harm the environment. history : history Sustainable agriculture has evolved from three perspectives: as a system of production to achieve food self-reliance, as a concept of stewardship, and as a vehicle for sustaining rural communities. It is now considered part of theory and practice in English agriculture from the mid- 19th century. Sustainable agriculture movement : Sustainable agriculture movement Started in 20th century. At the same time the Green Revolution The Land Fellowship, established sustainable agriculture in the early 1950s. During the 50s and 60s, there were a number of academic studies on sustainable issues. Sustainable agriculture movement : Sustainable agriculture movement “In 1980, Wes Jackson published New Roots for Agriculture which argued that monoculture farms with annual plants that require a lot of external inputs to grow – like huge fields of corn fertilized by ammonia – should be replaced by "polycultures" of perennial plants where one species would complement another.” Companion planting : Companion planting The practice of planting different species of plants in the same area and avoiding other certain combinations for the benefit of the food crops involved. It is very important factor in the health and resilience of your garden ecosystem as a whole. Companion planting can work in several ways: Tall plants protect smaller plants from sun and wind. Bees and other insects come to plants and help to attract pollination. Economy & environment impact : Economy & environment impact Environmental Benefit: -Make soil quality more better, control soil fertility, increase the Soil organic matter. Economic Benefit: -Develop the output also increase the income. Crop rotation : Crop rotation Crop rotation is a planned order of specific crops planted on the same field. Ex) barley after wheat row crops after small grains grain crops after legumes, etc. two- or three-year or longer period. Some purposes of rotation are to improve or maintain soil fertility, reduce erosion, reduce the build-up of pests, reduce risk of weather damage. Economy impact : Economy impact economic benefit of crop rotation is improved yields. Ex) Table. Yields of sunflower following sunflower and in rotation with other crops at Crookston, MN. Environmental impact : Environmental impact Reduction in disease problems in crops Reduction in the infestation of insects that damage crops Improvement in soil fertility Reduction in the amount of soil erosion Improved ability to manage soil water. Contour ploughing : Contour ploughing Contour ploughing Is a well-established agronomic measure The soil is ploughed Important at the beginning of rainy season Economy impact : Economy impact Reduced loss of yield and productivity Reduce need for high way cleaning Reduce need for ditch cleaning Soil Biological pest control : Biological pest control Biological pest control is chosen living organism to control a particular pest. This chosen organism might be a predator, parasite, or disease which will attack the harmful insect. Economy impact : Economy impact Amount of economic gain that directly comes from biological control. Less than 1% of global pest control sales of $30 billion involve biological. Environmental impact : Environmental impact Have more healthy crops Reduce damage of the crops No chemical ex) pesticide irritation : irritation Irrigation is different dry land farming. It relies on direct rainfall. Some reasons are dust suppression, disposal of sewage and mining. The irrigation process is use manufactured water to grow agriculture crops Surface Irrigation occurs when water is dispersed over the surface of the soil. Economy impact : Economy impact Increase income Environmental impact : Environmental impact Irrigation provide water even there is no rain Environmental impact : Environmental impact Irrigation would reduce the erosion Increase the opportunities for enhancing biodiversity values zero tillage : known as no-till or direct seeding Is a method of plowing or tilling a field in which the soil is disturbed as little as possible zero tillage Environmental impact : Environmental impact Crop yield will be lower Crop quality is poorer Reduce soil salinity Economy impact : Economy impact Saving fossil fuel and reduced greenhouse gas emissions conclusion : conclusion Many farmers will start using agriculture practices Countries using agriculture practices will provide the public healthy and safe food supply Bibliography : Bibliography http://www.articlesbase.com/gardening-articles/biological-pest-control-economic-effects-1274326.html#ixzz1M5z0uE6v http://www.b3nz.org/birea/index.php?page=background_risks http://www.gov.ns.ca/agri/agaware/teacher/84-85sustain4.pdf http://www.karmayog.org/agri/agri_21958.htm http://eap.mcgill.ca/AASA_1.htm http://www.derm.qld.gov.au/education/teachers/land/background.html http://www.croplife.org/public/sustainable_agriculture http://www.nal.usda.gov/afsic/pubs/terms/srb9902.shtml

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