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Filtering by: Subject Agricultural chemicals -- Environmental aspects -- Oregon -- Willamette River Valley

Farm level response to agricultural effluent control strategies : the case of the Willamette Valley

Creator:

Taylor, Michael L. (Michael Lester), 1960-

Abstract:

Changes in the structure of the U.S. agricultural industry since World War II have transformed it into a highly productive component of the domestic economy. But these changes have not occurred without indirect costs. For example, the reliance on agricultural chemicals has produced environmental effects causing growing concern. In addition,...

Resource Type:

Dissertation

Full Text:

Willamette Valley Richard M. Adams Changes in the structure of the U.S. agricultural industry since World
An eleven year study of nitrate leaching in vegetable production with winter cover crops

Creator:

Feaga, Jeff

Abstract:

The Willamette Valley of Oregon has high rates of winter precipitation that cause leaching losses of residual fertilizer nitrogen (N) as nitrate (NO₃). Cover crops may have potential to mitigate N loss. Shallow groundwater was sampled for 11 years from plots planted in summer vegetables with and without winter cover...

Resource Type:

Masters Thesis
Economic evaluation of alternative agricultural resources conservation policies

Creator:

Ogishi, Aya

Abstract:

The agriculture production system in the post-war United States is characterized as highly specialized and increasingly dependent on off-farm inputs. Although the US has traditionally supported agriculture with numerous government commodity programs such as target prices, nonrecourse loans, and deficiency payments, agriculture today is perceived as one of the major...

Resource Type:

Masters Thesis

Full Text:

Alternative Agricultural Resources Conservation Policies. by Aya Ogishi A THESIS submitted to Oregon