000020135 001__ 20135
000020135 005__ 20180122201646.0
000020135 037__ $$a377-2016-20658
000020135 041__ $$aen
000020135 245__ $$aEVALUATION OF CONSERVATION POLICIES FOR REDUCING NITROGEN LOADS TO THE MISSISSIPPI RIVER AND GULF OF MEXICO
000020135 260__ $$c2004
000020135 269__ $$a2004
000020135 270__ $$mkatsuyat@hiroshima-u.ac.jp$$pTanaka,   Katsuya
000020135 270__ $$mJunJie.Wu@oregonstate.edu$$pWu,   Junjie
000020135 300__ $$a27
000020135 336__ $$aConference Paper/ Presentation
000020135 446__ $$aEnglish
000020135 490__ $$aSelected Paper
000020135 520__ $$aThis study integrates economic and physical models to estimate the social costs of several commonly suggested policies (chemical-use tax and three types of conservation payments) for reducing nitrogen loads to the Mississippi River and for controlling hypoxia in the Gulf of Mexico. The economic models predict farmer's crop rotations, tillage practices, and participation in the Conservation Reserve Program (CRP) at more than 44,000 Natural Resource Inventory sites in the Upper Mississippi River Basin. The estimated land use changes under the four policies are incorporated into a physical model to assess their impact on nitrate-N concentrations in the Mississippi River. Results suggest that the fertilizer-use tax is much more cost-effective than the three conservation easement policies. Incentive payments for conservation tillage are most cost-effective among the three conservation easement policies, but can reduce nitrate-N concentrations only to a limited level. The potential for incentive payments for corn-soybean rotations is even more limited as an instrument for reducing nitrate-N concentrations in the Mississippi River. These payments also impose a higher cost to society than payments for conservation tillage. Payments for cropland retirement can be used to achieve the largest reduction in nitrate-N concentrations, but also impose the largest cost to society among the four policies considered in this paper. Results also suggest that, in contrast to previous studies, the targeted fertilizer-use tax reduces the aggregate farm profit loss under the uniform fertilizer-use tax by up to 30 percent.
000020135 650__ $$aEnvironmental Economics and Policy
000020135 700__ $$aTanaka, Katsuya
000020135 700__ $$aWu, JunJie
000020135 8564_ $$s721518$$uhttp://ageconsearch.umn.edu/record/20135/files/sp04ta03.pdf
000020135 887__ $$ahttp://purl.umn.edu/20135
000020135 909CO $$ooai:ageconsearch.umn.edu:20135$$pGLOBAL_SET
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  Previous issue date: 2004
000020135 982__ $$gAmerican Agricultural Economics Association>2004 Annual meeting, August 1-4, Denver, CO
000020135 980__ $$a377