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In summary , fields containing nutrient hot spots were the norm not the exception and an economic , GIS , and simulation analysis of these sites showed that in order for the management zone concept to provide useful information , the management induced hot spots must be identified and sampled separately . Feedback to these agencies is often given in the form of presentations at state meetings , local zoning boards , and informational meetings for non point source projects . The water will be used to nourish Mr. Luka Gasperi 's Senepol cattle and to irrigate his fruit trees and vegetable garden . The Commission proposed that these duties be performed by the Universal Service Administrative Company ( USAC ) , the entity that currently administers the high cost and low income support mechanisms and that performs billing , collection , and disbursement functions forall of the universal service support mechanisms . Dissolved oxygen , alkalinity , pH , temperature as measured in the field will also help define distributions of reduction and oxidation zones ( Szabo and Zapecza , 1988 ) . These studies will test the impact of management zone sampling on corn and soybean profitability . Management zones are areas where weed , insect , or nutrient concentrations are considered uniform , and can be based on landscape position , soil type , yield potentials , prior history , or aerial photographs . The Sanchez de Lozada government has strenuously avoided violent confrontations but is now being pressed to grant concessions that could undo the gains made by the previous administration to substitute legal employment for coca cultivation . The management zone concept will be tested in production fields during the 2nd and 3rd years of the study . The Commission concluded that `` statements that mention a body system , organ , or function affected by the supplement using terms such as `` stimulate , '' `` maintain , '' `` support , '' `` regulate , '' or `` promote '' can be appropriate when the statements do not suggest disease prevention or treatment or use for a serious health condition that is beyond the ability of the consumer to evaluate `` ( the report , p. 38 ) . TOT will be used to identify risk zones around the well . To improve efficiency and reduce sampling costs , professional agronomists and scientists are dividing fields into management zones . The Department of Homeland Security ( DHS ) and the Department of Housing and Urban Development ( HUD ) have announced measures to speed delivery of Federal assistance and transitional housing for victims of Hurricane Katrina . This survey showed that South Dakota farmers and researchers need a sensor , such as one being developed in this project , to help identify management zone boundaries . A survey in eastern South Dakota was conducted to determine if the proposed sensor could improve the location of N and P management zone boundaries .