Evaluate economic and environmental issues involved
Evaluate economic and environmental issues involved with farming practices that increase productivity. BY Lording Evaluate economic and environmental issues involved with farming practices that increase productivity. Farming is considered by many as the first major step towards civilization. Without it we would all still be hunter-gatherers.
Over the millennia farming has become steadily more efficient and productivity has increased. Better productivity is constantly sought after in an effort to reduce losses so more money can be made. Better productivity is defined as an increased rate of biomass creation by vegetation ND animals that can later be consumed by humans or their pets and livestock, resulting from more efficient farming practices.
The world population is rising and so there is a greater demand for food which means productivity must increase to meet the demand, the factors involved with increasing productivity can often be damaging to environment and in turn humans, because of this many different systems have arisen each with their own pros and cons. Almost all farms and farmers use fertilizers of one type or another, manure fertilizer has been used for well over 3000 years it has been estimated that nearly half the
Earth’s population is fed as a result of fertilizers.
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Naturally the plants die returning the Nitrogen to the soil as nitrates, proteins or amino acids. That or they are consumed by animals which excrete the Nitrogen as urea or other waste products returning it to the soil where bacteria perform mummification converting it to ammonia which eventually returns to the vegetation, this does not occur on farms as the plants are harvested and so the nitrogen, phosphorous, carbon and other nutrients are removed from the area and so more fertilizers need to be added.
The ability of fertilizers to promote growth is their biggest problem causer; following precipitation the fertilizer can leach out of the soil and into a nearby body of water such as a pond, where it causes triplication. Transportation is the process of rapid algal growth resulting in a decline in photosynthesis below the algal level, this means of authors die. Decomposing bacteria then consume the dead organic matter, using up a lot of oxygen as they go this kills all the other aerobic organisms in the water body.
Ammonia produced for use in artificial fertilizers is made in the Huber process, a very energy expensive process that releases vast amounts of CA, a green-house gas straight out the back end of animals, mostly cows and horses and so they are a better preventative of what would occur naturally anyway. Like artificial fertilizers they promote the growth of vegetation, unlike artificial fertilizer the quantity of each nutrient is not known so productivity is often not as high.
Pesticides such as fungicides, herbicides and insecticides are artificial chemicals that damage an organism unwanted by the farmer, usually because the pest is detrimental to growth of vegetation. They are expensive to design and create because like medicine they require lots of testing and refinement. There are strict guidelines on what they affect and how e. G. Onto fasciculate. Pesticides, fungicides and herbicides – expensive to create, potentially harmful (EDT and pontification and fasciculation), fungicides can kill McCollum which are symbiotic and helpful.
Resistance to Pesticides and the alternatives e. G barrier plants and predatory insect introduction – problems associate with that how they work removal of Vega every harvest = soil degradation – wash out, lower fertility of land, rivers and sit clog. Dust bowl problem in sass’s caused by not using dry farming practices and deep polluting of virgin soil on the great plains of USA and Canada, 002 Km affected intensive animal farming compared to organic Amazon deforestation GM – Monsanto Economic: dust bowl meant very poor economy because food became really expensive. Or economy in places in Africa because farming methods are less efficient so less food but have to compete with Europe + food miles are further so food prices have to be even lower than Rupee’s. In Europe multinational corporations control market price so prices are kept really low (price of flour) leading to government subsidies. Conclusion: farm profits are dropping, multinational prices rising, environmental cost using and all so I can eat oranges in winter.