2. 外语
  3. Organic Food Organic farming was among the fastest growing segments of U.S. agriculture during the 1990s. The value of retai

Organic Food Organic farming was among the fastest growing segments of U.S. agriculture during the 1990s. The value of retai

admin2010-03-26  41
问题                        Organic Food
    Organic farming was among the fastest growing segments of U.S. agriculture during the 1990s. The value of retail sales of organic food was estimated to be ＄16 billion in 2004. According to the Food Marketing Institute, more than half of Americans now buy organic food at least once a month. Why is organic food becoming so popular?
    What is Organic Food?
    In December 2000, the National Organic Standards Board of the U.S. Department of Agriculture (USDA) established a national standard for the term "organic." Organic food, defined by how it can not be made rather than how it can be made, must be produced without the use of sewer-sludge(淤泥) fertilizers, most synthetic fertilizers and pesticides, genetic engineering (biotechnology), growth hormones, irradiation and antibiotics. A variety of agricultural products can be produced organically, including produce, grains, meat, dairy, eggs, and processed food products.
    Organic Farming
    The phrase "organic farming" first appeared in Lord Northbourne’s book "Look to the Land," published in 1940. But the truth is, organic farming is the oldest form of agriculture. Before the end of World War II, farming without the use of petroleum-based chemicals (synthetic fertilizers and pesticides) was the only option for farmers. Technologies developed during the war were found to be useful for agricultural production. For example, the chemical ammonium nitrate(硝酸钠氨), which was used as military supplies, became useful as fertilizer, and organophosphates(有机磷酸酯)used for nerve gas were later used as insecticide.
    These days, farmers are switching to organic agriculture once again, but now with an ecologically based, systematic approach that includes long-term planning, detailed record keeping and major investment in equipment and supplies. Although it is still only a small industry, the number of organic farmers is growing by about 12 percent per year and now stands at more than 12,000 nationwide.
    Organic Farming in the U.S. Today
    The USDA’s Economic Research Service reports that in 1997, the latest year for which data are available, farmers in 49 states used organic production methods and third-party organic certification services on 1.35 million acres out of a total of 828 million acres of farmland. Approximately two-thirds of the certified U.S. organic farmland was used for crops, and one-third was used as pasture.
    Large farms, mostly located in the Midwest and West, produced processed tomatoes, organic wine grapes and other high-value crops on a commercial scale, whereas numerous small farms, concentrated in the Northeast, specialized in mixed vegetable production for direct marketing to consumers and restaurants.
    While organic food can be found throughout the country, California was the leader in production of organic fruits and vegetables in 1997, followed closely by Arizona, Florida, Texas, and Washington in decreasing order of total yield. Farmers and ranchers in 23 states raised a small number of certified organic cows, hogs and sheep. New York, Wisconsin and Minnesota were the top producers of organic dairy cows.
    Production: Organic vs. Conventional
    As you can imagine, organic agricultural practices are quite distinct from those of "conventional" farming.
    Conventional farmers:
    Apply chemical fertilizers to the soil to grow their crops.
    Spray with insecticides to protect crops from pests and disease.
    Use synthetic herbicides to control weed growth.
    Organic farmers:
    Feed soil and build soil matter with natural fertilizer to grow their crops.
    Use insect predators, mating disruption, traps and barriers to protect crops from pests and disease.
    Make use of crop rotation, mechanical tillage and hand-weeding, as well as cover crops, mulches, flame weeding and other management methods to control weed growth.
    As a last resort, organic farmers may apply certain botanical or other non-synthetic pesticides.
    How Do I Know If a Food is Organic?
    Look for the word "organic" on vegetables or pieces of fruit, or on the sign above the organic produce display. The word "organic" may also appear on packages of meat, cartons of milk or eggs, cheese and other single-ingredient foods. Foods labeled "100 percent organic" must contain only organic ingredients. Products containing at least 70 percent organic content can be labeled "made with organic ingredients." Those foods labeled simply "organic" must have at least 95 percent organic ingredients, by Weight or fluid volume, excluding water and salt. Anyone who knowingly sells or labels a product "organic" that is not produced and handled in accordance with these regulations can face a civil penalty of up to ＄10,000.
    Foods grown and processed according to the federal standards will in most cases bear the seal "USDA Organic." As its use is voluntary, companies may choose not to display the seal.
    Why is Organic Food So Expensive?
    Prices tend to be higher for organic than conventional products. As stated on the Web site of the Food and Agriculture Organization (FAO) of the United Nations (UN), certified organic products are generally more expensive than their conventional counterparts because:
    The organic food supply is limited as compared to demand.
    Production costs for organic foods are typically higher because of greater labor input and because farmers don’t produce enough of a single product to lower the overall cost.
    Post-harvest handling of relatively small quantities of organic foods results in higher costs because organic and conventional produce must be separated for processing and transportation.
    Marketing and the distribution chain for organic products are relatively inefficient, and costs are higher because of relatively small volumes.
    The FAO also notes that as the demand for organic food and products increases, technological innovations and economies of scale should reduce costs of production, processing, distribution and marketing for organic produce.
    Is Organic Food Better Than Conventional Food?
    Organic and conventional food must meet the same quality and safety standards. Organic food differs from conventionally produced food simply in the way it is grown, handled and processed. There is no scientific evidence to suggest that it is more nutritious or safer than conventional food. A recently published report indicates that organic food is less likely to contain pesticide residues than conventional food. Yet, according to the National Research Council, the traces of pesticides left on conventionally grown products are unlikely to cause an increased cancer risk. Also, if fruits and vegetables are properly washed, most of the chemicals can be removed.
    As for taste, that’s up to you to decide what you like best. In general, people tend to find that the fresher a food is, the better it tastes, regardless of how it was produced.
Organic agriculture is quite different from the traditional one.
选项 A、Y
B、N
C、NG
答案A
解析 第四个小标题下的内容就是对有机农业和传统农业进行比较。从中可见，有机农业和传统农业是有很大区别的。
转载请注明原文地址:https://kaotiyun.com/show/hpt7777K
0

大学英语四级

相关试题推荐
随机试题
最新回复(0)