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![Page 1: Can We Feed the World? Land of Agriculture in World How We Starve? An Ecological Perspective on Agriculture.](https://reader035.fdocuments.in/reader035/viewer/2022062803/56649ce05503460f949aa9d3/html5/thumbnails/1.jpg)
IS AGRICULTURE FRIEND OR FOE FOR THE ENVIRONMENT?
AHMET OĞUZHAN ÇAKIRALİ SELİM DİRİKOÇ
MERT SAĞDIÇ
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Outline
Can We Feed the World? Land of Agriculture in World How We Starve? An Ecological Perspective on Agriculture
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Can We Feed the World? History of Agriculture
Animals,plants,food etc.
Sustainable
Nile Valley, Middle East, China
To overcome environmental limitations New solution= New environmental
problem
http://photo.elsoar.com/wp-content/images/Agriculture-Photo-1.jpg
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Land of Agriculture in World
Europe 22% Australia 57% United States 44%Enough for today…
What if human population increase?http://www.biology.ualberta.ca/taylor.hp/Biology381/topic-03-Large.htm
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Food Production According to some agricultural
scientists and corporations… GMCs Production per unit area
http://cdn3.chartsbin.com/chartimages/l_578_838a080875c163be97c0776240f9ba35
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http://www.ediblegeography.com/wp-content/uploads/2010/05/Agriculture-landuse-2000.jpg
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How We Starve?
Undernourishment Lack of sufficient calories Dramatic, fast-acting
Malnourishment Lack of chemical components Long-term, insidious
The supply of the proteinEchological, Environmental and Ethical…
http://images.sodahead.com/polls/002120661/5132344595_starving_children_answer_1_xlarge.jpeg
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Recent Famines
World War II, At the end of the 20th century- 34 countries…
Food distribution problem Poor people, Expensive transportation ,
Food aid/ short termSolution: Local Production!‘’Give a man a fish and feed him for a day,teach a man how to fish and feed him for a life’’
http://www.konsensushaber.com/wp-content/uploads/2012/09/Susuzluk.jpg
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*Daily Calories Per Capita *Percentage of Population Undernourished
http://chartsbin.com/view/6997http://chartsbin.com/view/1150
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What We Eat and Grow? Half million plant/ 3.000 as agricultural crops 150 species cultivated on a large scale Food provides 14 crop species as wheat,rice,maize,
potatoes,sugarcane,soybean,barley… More than 80% calories of consumed by human
beings…
http://www.dfz.bg/assets/6307/agriculture.jpg
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Distribution of What We Eat
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Small-grain with large world trade..United States, Canada, Australia.. 2 million in 1996 2.2 Billion tons in
2005 Full of capacity or stabilized
demand?
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Aquaculture Farming of food in aquatic habitats Provide nutritional quality Culturally important instances..Yellowtail from Japan, crayfish from U.S.
http://www.globalpartnershipforoceans.org/sites/default/files/images/Ghana_Aquaculture.gif
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Productive, due to flowing water Mariculture (farming of ocean fish) U.S, Canada; Shellfish
http://www.environmental-watch.com/wp-content/uploads/2013/06/shutterstock_88536259.jpg
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An Ecological Perspective on Agriculture
Novel ecological conditions because of farming..
Agroecosystems and 6 difference with natural ecosystems..
http://www.nature.com/scitable/knowledge/library/soil-the-foundation-of-agriculture-84224268
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Monoculture (large areas planted with single species)
Neat rows Biological Diversity Plowing Genetic Modifications
http://media.treehugger.com/assets/images/2011/10/agriculture-impact-climate-change-monoculture-farm-photo.jpg
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Limiting Factors High quality agricultural soils… best of Low-land rice needs heavy water-saturated
soil Watermelon – very salty soil Limiting: to make a soil more productive Liebig’s minimum law 20 chemical essential elements Macronutrients/ Micronutrient
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Were Liebig always right? Nitrogen and phosohorus in proteins
example…
Synergistic Effect
http://www.greencare-concept.nl/eng/pagina/141/prevention-through-nutrition.html)
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What are the advantages and disadvantages of monoculture?
Advantages: It makes farming much more efficient, keeping down costs. Machines and procedures can be used totally systematically on a large scale.
Disadvantages: It removes all of the diversity of the natural land and thereby eliminates the habitat of almost all of the other plants and animals .
It makes the entire crop vulnerable to diseases or environmental changes.
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ORGANIC FARMING
ALİ SELİM DİRİKOÇ 16936
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ORGANIC FARMING
Organic farming is typically considered to three qualities;
It is more like natural ecosystems than monocultures.
It minimizes negative environmental impacts. The food that results from it doesn’t contain
artificial compounds.
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ORGANIC FARMING
IFOAM’s Definition:
“Organic agriculture is a production system which maintains sustainability of ecosystem,lands and human health. The purpose of organic farming is to combine innovation,tradition and science to benefit our common environment and to maintain a good life with all people in fair relations.”
http://www.qways.gr/en/images/new.qways.gr/800px-ifoam_logo.svg.png
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ORGANIC FARMING
Certified and Exempt Organic Farms in USA
Organic Sales by Category
U.S. Total% of U.S.
Organic SalesIowa Total
% of IowaOrganic Sales
Livestock Products
$906,207,000 28.7% $20,560,000 28.7%
Vegetables 689,992,000 21.9% 803,615 1.1%
Field Crops *526,780,000 16.7% *34,741,216 48.6%
Fruits & Tree Nuts
444,747,000 14.1% 110,085 0.2%
Livestock 316,470,000 10.0% 14,679,000 20.5%
Floriculture/Bedding
179,657,000 5.7% 192,678 0.3%
Berries 83,233,000 2.6% 121,888 0.2%
* – Sales may be higher than stated due to un-disclosed values
(Source: USDA)
Organic Food Sales in US
http://iowaindependent.com/27755/iowa-9th-in-nation-for-organic-farms-low-on-direct-consumer-outlets#sthash.cL1OX9FX.dpuf
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ALTERNATIVES TO MONOCULTURE
Tractors in potato Field
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ALTERNATIVES TO MONOCULTURE
Combination of crops
Broad range of genotypes
http://www.frutasberi.com/images/cultivos/bg_top_en.jpg
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QUESTION
GIVE AN ALTERNATIVE METHOD TO MONOCULTURE AND EXPLAIN
THIS METHOD.
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ANSWER
It depends on the maintenance of a productive agriculture that sustains yields and provides the use of local resources while trying to block harmful environmental and socio-economic impacts of new technologies
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A BELIEF ON FOOD CHAIN
http://www.field-studies-council.org/urbaneco/images/011-food-chain.jpg
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A BELIEF ON FOOD CHAIN
Domestic animals are used for human transportation
http://3.bp.blogspot.com/-0pT6Xnnxcfw/T4_R7-b5SUI/AAAAAAAAeUU/ysbtyhsbwT4/s1600/Beyaz_renkte_at_arabas.jpg
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Genetically Modified Food: Biotechnology, Farming and
Environment
http://www.healthyalterego.com/wp-content/uploads/2011/08/gmO-tomato.jpg
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Genetically Modified Food: Biotechnology, Farming and
Environment
Increase of GMC according to years
http://www.nature.com/news/2009/090218/full/457949a.html
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CLIMATE CHANGE AND AGRICULTURE
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CLIMATE CHANGED AND AGRICULTURE
Percentage Changes in Yields Due to Environmental Factors From Present to 2050
http://rootsforgrowth.com/wp-content/uploads/2012/05/31.png
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http://www.youtube.com/watch?v=ALp3y9b0Aeo
How Agriculture Changes the Environment
. Soil erosion
. Sediment transport and deposition downstream
. On-site pollution from overuse and secondary effects of fertilizers and pesticides
. Off-site pollution of other ecosystems (soil,water,air)
. Deforestation
. Desertification
. Degradation of aquifers
. Salinization
. Accumulation of toxic metals
. Accumulation of toxic organic compounds
. Loss of biodiversity
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The Plow Puzzle
http://upload.wikimedia.org/wikipedia/commons/c/c1/Plowing_ecomat.jpg
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Erosion
http://earthwatchunlocked.files.wordpress.com/2012/06/matt-andersen-drought-and-erosion-takes-it-toll-on-grazing-land.jpg
Erosion is the process by which soil and rock are removed from the Earth's surface by exogenic processes such as wind or water flow, and then transported and deposited in other locations.
http://en.wikipedia.org/wiki/Erosion
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QUESTİON :How can we make the
soils more sustainable?
http://en.hdyo.org/assets/ask-question-2-ce96e3e01c85a38a0d39c61cfae6d42c.jpg
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Making Soils Sustainable. Contour Plowing
http://media.web.britannica.com/eb-media/99/65699-004-7FCC0E1C.jpg
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Contour plowing or contour farming is the farming practice of plowing and/or planting across a slope following its elevation contour lines. These contour lines create a water break which reduces the formation of rills and gullies during times of heavy water run-off; which is a major cause of top soil loss and soil erosion.
http://en.wikipedia.org/wiki/Contour_plowing
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. No-till Agriculture
http://www.fairfaxcounty.gov/nvswcd/images/notill2.jpg
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No-till farming (also called zero tillage or direct drilling) is a way of growing crops or pasture from year to year without disturbing the soil through tillage. No-till is an agricultural technique which increases the amount of water that infiltrates into the soil and increases organic matter retention and cycling of nutrients in the soil. In many agricultural regions it can eliminate soil erosion.
http://en.wikipedia.org/wiki/No-till_farming
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Pesticides
http://www.google.com.tr/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&docid=hIth9DGmnDpJ4M&tbnid=fmtEo3jL9sS1xM:&ved=0CAIQjBw&url=http%3A%2F%2Farch1design.com%2Fblog%2Fwp-content%2Fuploads%2F2010%2F10%2Fpesticides1.jpg&ei=OXlzU9CyIemp7AafjoF4&bvm=bv.66699033,d.ZGU&psig=AFQjCNEjtOw3nd9G3qDyxq1F2aN3WKqjlA&ust=1400162998175164
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Pesticides are substances meant for attracting, seducing, destroying, or mitigating any pest. They are a class of biocide. The most common use of pesticides is as plant protection products (also known as crop protection products), which in general protect plants from damaging influences such as weeds, plants, diseases or insects.
http://en.wikipedia.org/wiki/Pesticide
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Grazing on Rangelands
http://ucanr.edu/blogs/anrnews/blogfiles/3651.jpg
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Grazing is the removal of live tissue from a living plant. Grazing differs from true predation because the organism being eaten from is not generally killed, and it differs from parasitism as the two organisms do not live together, nor is the grazer necessarily so limited in what it can eat
http://en.wikipedia.org/wiki/Grazing
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Desertification
http://www.davidsuzuki.org/blogs/science-matters/assets_c/2013/04/desert2-thumb-480xauto-4312.jpg
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Desertification is a type of land degradation in which a relatively dry land region becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife. It is caused by a variety of factors, such as climate change and human activities.
http://en.wikipedia.org/wiki/Desertification
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The Effect of Farming on the Biosphere
. Changes land cover
. Increase in carbondioxide
. Species diversity
. Firehttp://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Seawifs_global_biosphere.jpg/1024px-Seawifs_global_biosphere.jpg