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Is the contamination of soil from hazardous substances that after the natural properties of the soil. 

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But would we simply be exchanging soil pollution for air pollution?

Zhu was also a pioneer of studying soil pollution and maintenance in China.

Heavy use of pesticides and fertilizers for cotton growing further aggravates soil pollution.

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Is a deterioration of soil quality because it has not been used properly.

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About 65 % of Africa's agricultural land suffers from soil degradation.

Fertile lands in the highlands suffer from severe soil degradation, erosion and extensive deforestation.

Soil degradation such as erosion, compaction, lowered fertility, and contamination continue to be serious concerns.

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Is the practice of developing land so that it can be used to grow crops and raise animals as food sources. 

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State agriculture departments test and license prospective pest-control professionals.

Workers are 82 percent service and commerce, 11 percent agriculture.

The bill would permit the Agriculture Department to recall contaminated meat.

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Is the natural occurrence of salt in soil and water sources. 

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Primary salinity and primary alkalinity are the chief stable properties, but the waters are characterized by high subalkalinity, of which silica is the main component.

It's difficult to see primary salinity in a sentence .

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Is the occurrence of salt in soil and water resulting from human activities.

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Secondary salinity is a direct result of human interaction with the land, during development, agriculture and irrigation.

It's difficult to see secondary salinity in a sentence .

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Is the transport of water to plants by artificial means, such as through canals or a system of pipes. 

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Check bases of irrigation equipment for erosion of the foundation ..

At SRP, zanjeros supply farms with irrigation water from canals.

After 1983, public investment for irrigation declined and became deficient.

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Is the occurrence of high levels of salt in soil and water sources, resulting in decreased productivity of farmland. 

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As a result, the dryland salinity and the loss of fresh water.

Soil salinity and dryland salinity are two problems degrading the environment of Australia.

This is an issue as dryland salinity is onset by additional deep drainage.

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Is an environmental problem in which land that was previously able to produce vegetation becomes dry and desert-like. 

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No, the desertification of garbage is not a pipe dream.

U . N . Secretariat of the Convention to Combat Desertification:

"That's how desertification manifests itself ."

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Is a substance added to soil in order to help plants grow. 

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Severe fuel and fertilizer shortages mean empty shelves in food stores.

$419-- Labor, fertilizer, taxes, etc.

Clinton would do well to propose a Motor Fertilizer Control bill.

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Is a substance that is used to eliminate insects that eat plants. 

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Even more pesticides could be prohibited later, after further study.

Not all pest-control experts use pesticides in every situation.

Garrison advises gardeners to choose a pesticide by reading the label.

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Is a substance that is used to kill weeds. 

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The soybean was modified to resist Monsanto's herbicide Roundup.

Herbicides and plows won't work in a rose garden.

Aerial herbicide spraying does not get to all of the trees.

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Is a flow of water or chemicals which travels from one place to another that can damage the environment. 

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In the spring, nearby Granite Falls roars with mountain runoff.

Much of the runoff comes from farm fields in the spring.

Make sure that the gutters channel the runoff to the downspouts.

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In 2003, pH values of 3.4 and 6.4 were measured in Schleife.

A'strong'polyelectrolyte is one which dissociates completely in solution for most reasonable pH values.

Indicators usually exhibit intermediate colors at pH values inside the listed transition range.