Proceedings :: North Central Soil Fertility Conference

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Mamo, M

Dhuyvetter, K.C

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Authors

Kastens, T.L

Schmidt, J.P

Dhuyvetter, K.C

Shapiro, C

Biswas, S

Kranz, W

Shelton, D

Mamo, M

Mader, T

Snow, D

Donk, S.V

Bartelt-Hunt, S

Zhang, T

Tarkalson, D

Topics

Type

Oral

Year

1999

2013

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Filter results2 paper(s) found.
1. Optimal Phosphorus Response in Site-specific Farming Site-specific farming has provided an opportunity to collect large amounts of field data, but traditional agronomic yield response models have not been developed to exploit this mformation. This research presents a yield model that incorporates detailed site-specific field information (e.g., soil pH. soil test P, K, and N, fertilizer rates), providing improved fertilizer decision making. A quadratic yield response function and a modified asymptotic Mitscherlich function are compared for irrigated... Download paper
2. Overview of Manure Handling on Steroid Movement in Agricultural Fields from Beef Cattle Systems Manure generated from concentrated animal feeding operations may serve as a source of steroids in surface water and potentially in groundwater. The objectives of this research were to determine the amount of steroids and metabolites in runoff from beef cattle production pens, and from runoff and leaching from crop production fields. Cattle were fed a synthetic progestagen, MGA or melengestrol acetate and treated with zeranol, trenbolone acetate, and estradiol implants, while a second group was not... Download paper

Filter results2 paper(s) found.

1. Optimal Phosphorus Response in Site-specific Farming

Site-specific farming has provided an opportunity to collect large amounts of field data, but traditional agronomic yield response models have not been developed to exploit this mformation. This research presents a yield model that incorporates detailed site-specific field information (e.g., soil pH. soil test P, K, and N, fertilizer rates), providing improved fertilizer decision making. A quadratic yield response function and a modified asymptotic Mitscherlich function are compared for irrigated...

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2. Overview of Manure Handling on Steroid Movement in Agricultural Fields from Beef Cattle Systems

Manure generated from concentrated animal feeding operations may serve as a source of steroids in surface water and potentially in groundwater. The objectives of this research were to determine the amount of steroids and metabolites in runoff from beef cattle production pens, and from runoff and leaching from crop production fields. Cattle were fed a synthetic progestagen, MGA or melengestrol acetate and treated with zeranol, trenbolone acetate, and estradiol implants, while a second group was not...

Download paper