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Harmful Effects-WPS Office

The Green Revolution aimed to increase global food supply through new farming techniques, but also created unwanted side effects. Farmers used pesticides, fertilizers, and irrigation to dramatically increase wheat, rice, and maize production between the 1960s and 1990s. However, many pesticides proved toxic to humans and the environment. Studies found DNA damage and heavy metals in the water near heavily sprayed farms. The new methods also led to a loss of genetic diversity as farmers prioritized high-yield varieties, reducing crop variations. Rice field sustainability declined due to toxicity and loss of biodiversity, though yields increased. Areas with limited water saw much smaller gains as the methods relied on significant irrigation.

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Razel Ada
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109 views2 pages

Harmful Effects-WPS Office

The Green Revolution aimed to increase global food supply through new farming techniques, but also created unwanted side effects. Farmers used pesticides, fertilizers, and irrigation to dramatically increase wheat, rice, and maize production between the 1960s and 1990s. However, many pesticides proved toxic to humans and the environment. Studies found DNA damage and heavy metals in the water near heavily sprayed farms. The new methods also led to a loss of genetic diversity as farmers prioritized high-yield varieties, reducing crop variations. Rice field sustainability declined due to toxicity and loss of biodiversity, though yields increased. Areas with limited water saw much smaller gains as the methods relied on significant irrigation.

Uploaded by

Razel Ada
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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Harmful Effects of the Green Revolution

The Green Revolution program, which began decades ago, had a noble goal -- increase the global food
supply and reduce world hunger. To accomplish this, farmers started to cultivate land using new farming
techniques. These methods worked, crop yields climbed and fewer people experienced hunger. However,
Green Revolution farming methods also created a few unwanted side effects -- some of which are
serious.

Inside the Green Revolution

One primary mission of the Green Revolution was to improve the production of wheat and rice -- two
high-yield plants. The program required farmers to use pesticides to kill pests and fertilizers to give extra
nutrients to the plants, to take advantage of efficient irrigation techniques, and to learn new
management techniques. Not only did food production increase, but statistics show that the production
of maize, wheat and rice almost doubled between the 60s and 90s.

Pesticides: Handle with Care

Many of the pesticides used during the heady days of the green revolution (60s to 90s) are very toxic to
humans and other non-target organisms. Even pesticides advertised as "green," are not necessarily 100%
safe. While many pesticides used in organic farming are safer than common chemicals we come into
contact with every day, it is important to be careful. The Environmental Protection Agency does not
allow companies to use terms such as "green" or "non-toxic" on pesticide labels.

Toxicity of the Green Revolution

Four decades after Indian farmers began increasing production using pesticides and fertilizers, they are
starting to have second thoughts about the change. In 2008, Researchers at Punjabi University
discovered DNA damage in 30 percent of Indian farmers who treated plants with herbicides and
pesticides. An additional study found heavy metals and pesticide chemicals in drinking water. These
substances are harmful and can cause serious health problems. Some of these problems may occur
because some farmers may not know how to handle and dispose of toxic chemicals. They may also harm
the environment by using too many of those products.

Loss of Genetic Diversity

In traditional farming, farmers plant a variety of crops that typically have a large supply of unique
genotypes. People using Green Revolution farming methods plant fewer crop varieties in favor of those
that produce high yields. This type of cultivation causes an undesirable loss in crop genetic diversity. You
can witness this problem in India, where about 75 percent of their rice fields contain only 10 varieties of
plants. This is a significant drop compared to the 30,000 rice varieties that were planted 50 years ago.
Traditional crops have the highest gene diversity and as they dwindle, those genes vanish. These genetic
diversity losses can be seen all over the world in locations that implemented Green Revolution farming
methods.

Impacts on Rice Production

Rice fields are a vital source of food for individuals around the world. Because these fields often have
mineral-rich soil, they are resilient and people have farmed them successfully for centuries. However,
after the Green Revolution changed the way people farm, rice field sustainability declined, even though
rice yields increased. Causes for the decline include loss of biodiversity and fish deaths due to toxicity
from pesticide use.

Other Side Effects

Because the Green Revolution required learning new water management skills, some farmers that didn't
have these skills could not take full advantage of the new irrigation techniques. The Green Revolution's
original mission was to focus on areas with significant rainfall or irrigation. This meant that in drier
locations, wheat yield gains often fell below 10 percent, while yields in irrigated areas reached 40
percent. By the mid 80s, locations with high irrigation fully adopted high-yield crop production methods,
while areas with little rainfall and a limited water supply experienced low adoption rates.

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