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Organic FoodOrganic farming was among the fastest growing segments of U.S. agriculture dur

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 cannot be made rather than how it can be made, must be produced without the use of sewer-sludge 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" does not mean "natural". There .is no legal definition as to what constitutes a "natural" food. However, the food industry uses the term "natural" to indicate that a food has been minimally processed and is preservative-free. Natural foods can include organic foods, but not all natural foods are organic. Only foods labeled "organic" have been certified as meeting USDA organic standards.

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. Be fore 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, which was used as munitions, became useful as fertilizer, and organophosphates used for nerve gas were later used as insecticide.

These days, farmers are switching to organic agriculture once again, but now with an eco logically 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 a

A.Y

B.N

C.NG

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更多“Organic FoodOrganic farming was among the fastest growing segments of U.S. agriculture dur”相关的问题

第1题

进入灾区的救护队员佩戴了氧气压力8MPa的正压氧呼吸器准备进人灾区。()此题为判断题(对,错)。请帮忙给出正确答案和分析,谢谢!
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第2题

进入灾区的救护队员佩戴了氧气压力8Mpa的正压氧呼吸器准备进入灾区。()
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第3题

进入灾区的救护队员佩戴了氧气压力8MP对的正压氧呼吸器准备进入灾区()
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第4题

进人灾区的救护小队队员不能少于()人。A.6B.8C.10

进人灾区的救护小队队员不能少于()人。

A.6

B.8

C.10

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第5题

下列矿山救护的灾变处理措施正确的是()

A.听到报警后,矿山救护队必须在1min内出动

B.救护队员应按事故类别整理携带装备,做好抢救准备

C.进入灾区的救护小队队员不得少于6人进入前必须检查氧气呼吸器,氧气压力不得低于18Mpa,并按规定佩带和使用

D.进入灾区从事救护工作时,任何情况下氧气呼吸器都必须保留不低于8Mpa的压力。

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第6题

下列矿山救护的灾变处理措施正确的是()。

A.听到报警后,矿山救护队必须在10min内出动

B. 进入灾区的救护小队队员不得少于6人进入前必须检查氧气呼吸器,氧气压力不得低于18Mpa,并按规定佩带和使用

C. 进入灾区从事救护工作时,任何情况下氧气呼吸器都必须保留不低于8Mpa的压力

D. 救护队员应按事故类别整理携带装备,做好抢救准备

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第7题

进入灾区的救护小队队员不得少于()人,进入前必须检查氧气呼吸器,氧气压力不得低于(),并按照规定佩带和使用。
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