Proceedings :: North Central Soil Fertility Conference

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Sharpley, A.N

Emmert, D

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Weld, J.L

Sharpley, A.N

Gburek, W.J

Beegle, D.B

Emmert, D

Nielsen, R

Joern, B

Camberato, J

Topics

Type

Oral

Year

1998

2007

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Filter results2 paper(s) found.
1. Identifying Critical Sources of Phosphorus Export from Agricultural Watersheds Phosphorus (P) is an essential element for plant and animal growth, and its input to agriculture is necessary to maintain profitable crop and animal production. Eutrophication, the natural aging of lakes or streams brought on by nutrient enrichment, can be accelerated by P inputs to fresh waters from human activities (Carpenter et al., 1998; Schindler. 1977). Eutrophication has been identified as the main problem in surface waters withimpaired water quality (USEPA. 1996). It restricts water use for... Download paper
2. Predicting Relative Yield of Corn in Indiana Using an Active Sensor Fine-tuning N fertilization is important for impr oving the economic and environmental impact of corn production. This importance is highlighted by ever rising fertilizer prices and increased public scrutiny. Reflectance measurements usi ng an active sensor during the growing season may be useful for determining the need for additio nal N. This is the second year of a multi-year study to evaluate canopy reflectanc e as an N management tool across a variety of Indiana soil types. The objectives of... Download paper

Filter results2 paper(s) found.

1. Identifying Critical Sources of Phosphorus Export from Agricultural Watersheds

Phosphorus (P) is an essential element for plant and animal growth, and its input to agriculture is necessary to maintain profitable crop and animal production. Eutrophication, the natural aging of lakes or streams brought on by nutrient enrichment, can be accelerated by P inputs to fresh waters from human activities (Carpenter et al., 1998; Schindler. 1977). Eutrophication has been identified as the main problem in surface waters withimpaired water quality (USEPA. 1996). It restricts water use for...

Download paper

2. Predicting Relative Yield of Corn in Indiana Using an Active Sensor

Fine-tuning N fertilization is important for impr oving the economic and environmental impact of corn production. This importance is highlighted by ever rising fertilizer prices and increased public scrutiny. Reflectance measurements usi ng an active sensor during the growing season may be useful for determining the need for additio nal N. This is the second year of a multi-year study to evaluate canopy reflectanc e as an N management tool across a variety of Indiana soil types. The objectives of...

Download paper