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Native Soil Organic Carbon Distribution in the Soil Profiles of Central Maricopa County, Arizona

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Abstract:

Desert soils are recognized to have low organic carbon as a result of low vegetation density and high oxidation rate of organic residues under desert environment. Organic carbon returned to the soil is a function of crop and animal residues, environmental variables and management practices. Maricopa County, Arizona is the largest crop production county in the State of Arizona. It is also the most diverse county including dairy, beef cattle, range, and irrigated crops such as small grains, alfalfa, cotton, and vegetables. Rapid change in the demography and cropping systems are also significant in the county. Agricultural production and urban interface are a challenge for all. Natural Resources Conservation Service (NRCS) provides technical and financial assistance to producers to help them optimize the use of resources while environmental sustainability and farming objectives are achieved simultaneously. Soil organic carbon as affected by crop and animal residues returned to the soil plays an important role in maintaining soil sustainability. Native soil organic carbon distribution in the soil profile as influenced by the environmental variables and the landscapes was selected for evaluation. Soil series of Central Maricopa County described by NRCS Soil Survey Staff were selected as resource data. Soil organic carbon in Maricopa was low for all locations, less than 0.6% on the upper horizon, decreases rapidly to less that 0.02% in the lowest horizon following the first order reaction model. The change in cropping systems as growers are shifting toward vegetable production with an increase in production intensity, less organic carbon is expected to return to the soil
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Association:
Name: SOIL AND WATER CONSERVATION SOCIETY
URL:
http://www.swcs.org


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URL: http://citation.allacademic.com/meta/p235609_index.html
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MLA Citation:

Zerkoune, Mohammed. "Native Soil Organic Carbon Distribution in the Soil Profiles of Central Maricopa County, Arizona" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona, Jul 26, 2008 <Not Available>. 2013-12-14 <http://citation.allacademic.com/meta/p235609_index.html>

APA Citation:

Zerkoune, M. A. , 2008-07-26 "Native Soil Organic Carbon Distribution in the Soil Profiles of Central Maricopa County, Arizona" Paper presented at the annual meeting of the SOIL AND WATER CONSERVATION SOCIETY, TBA, Tucson, Arizona <Not Available>. 2013-12-14 from http://citation.allacademic.com/meta/p235609_index.html

Publication Type: Poster Presentation
Abstract: Desert soils are recognized to have low organic carbon as a result of low vegetation density and high oxidation rate of organic residues under desert environment. Organic carbon returned to the soil is a function of crop and animal residues, environmental variables and management practices. Maricopa County, Arizona is the largest crop production county in the State of Arizona. It is also the most diverse county including dairy, beef cattle, range, and irrigated crops such as small grains, alfalfa, cotton, and vegetables. Rapid change in the demography and cropping systems are also significant in the county. Agricultural production and urban interface are a challenge for all. Natural Resources Conservation Service (NRCS) provides technical and financial assistance to producers to help them optimize the use of resources while environmental sustainability and farming objectives are achieved simultaneously. Soil organic carbon as affected by crop and animal residues returned to the soil plays an important role in maintaining soil sustainability. Native soil organic carbon distribution in the soil profile as influenced by the environmental variables and the landscapes was selected for evaluation. Soil series of Central Maricopa County described by NRCS Soil Survey Staff were selected as resource data. Soil organic carbon in Maricopa was low for all locations, less than 0.6% on the upper horizon, decreases rapidly to less that 0.02% in the lowest horizon following the first order reaction model. The change in cropping systems as growers are shifting toward vegetable production with an increase in production intensity, less organic carbon is expected to return to the soil

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