Proceedings :: North Central Soil Fertility Conference

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Ohm, H

Waltman, W.J

Wessel, J.R

Oliveira, L

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Authors

Ohm, H

Goos, R

Shapiro, C.A

Kranz, W.L

Blumenthal, J

Yonts, C.D

Benham, B.L

Ferguson, R.B

Hergert, G.W

Waltman, W.J

Wessel, J.R

Below, F.E

Oliveira, L

Scharf, P

Vories, E.D

Stevens, G

Dunn, D.J

Hubbard, V.C

Phillips, A

Topics

Type

Oral

Year

2016

2000

2007

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Filter results4 paper(s) found.
1. Evaluation of Four Iron Sources for the Control of Iron Deficiency Chlorosis in Soybean Iron deficiency chlorosis (IDC) is a destructive disorder of soybeans grown on calcareous soils in the North Central region. Certain chelates are effective at preventing IDC, but the quality of commercial-grade materials varies. The objective of this greenhouse study was to compare the ability of four commercial iron fertilizers to prevent IDC in soybeans. The four sources were a high-quality FeEDDHA product (FeEDDHA-1), an FeEDDHA product of lower quality (FeEDDHA-2), FeEDDHSA, and FeHBED. The... H. Ohm, R. Goos Download paper
2. Site-Specific Nitrogen and Irrigation Management Across Nebraska Agro-Ecological Zones Nitrogen leaching below hrrow-irrigated ground has caused nitrate contamination in Nebraska's groundwater. Alternate row hrrow irrigation and alternate row nitrogen fertilization is proposed as a method to decrease water use and decrease nitrogen leaching. Nitrogen (N) was applied at a uniform and variable rate based on spring grid sampling for nitrate. The experiment was conducted at three sites in Nebraska that represent a range of growing conditions. At these sites, the average growing degree-days... Download paper
3. Value of Tillage Practices and Nitrogen Rates for Corn Production Most N recommendations for corn (Zea mays L.) production in the U.S. Midwest do not consider tillage as a factor when an appropriate N rate is determined. Our objectives were to determine the response of grain yield and RTN to increasing rates of fertilizer N for corn grown in three tillage systems. Tillage by N rate experiments we re conducted at eight Central Illinois site-years at three locations and years (1998-2000). Tillag e systems employed were: zero-till, where no tillage was performed at... Download paper
4. Using Reflectance Sensors to Predict Nitrogen Needs of Cotton Objectives 1) Develop on-the-go N recommendations based on analysis of the reflectance sensor readings. 2) Determine the sensor model, height, and wa velength that give the best prediction for sidedress N. 3) Determine the best growth stag e for sensor-based sidedressing Relevance There is great spatial variability of N in the soil. Cotton fields that receive a blanket rate of nitrogen, ignoring the vari ability, will have areas of excessi ve growth. This unnecessary growth raises production cost... Download paper

Filter results4 paper(s) found.

1. Evaluation of Four Iron Sources for the Control of Iron Deficiency Chlorosis in Soybean

Iron deficiency chlorosis (IDC) is a destructive disorder of soybeans grown on calcareous soils in the North Central region. Certain chelates are effective at preventing IDC, but the quality of commercial-grade materials varies. The objective of this greenhouse study was to compare the ability of four commercial iron fertilizers to prevent IDC in soybeans. The four sources were a high-quality FeEDDHA product (FeEDDHA-1), an FeEDDHA product of lower quality (FeEDDHA-2), FeEDDHSA, and FeHBED. The... H. Ohm, R. Goos

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2. Site-Specific Nitrogen and Irrigation Management Across Nebraska Agro-Ecological Zones

Nitrogen leaching below hrrow-irrigated ground has caused nitrate contamination in Nebraska's groundwater. Alternate row hrrow irrigation and alternate row nitrogen fertilization is proposed as a method to decrease water use and decrease nitrogen leaching. Nitrogen (N) was applied at a uniform and variable rate based on spring grid sampling for nitrate. The experiment was conducted at three sites in Nebraska that represent a range of growing conditions. At these sites, the average growing degree-days...

Download paper

3. Value of Tillage Practices and Nitrogen Rates for Corn Production

Most N recommendations for corn (Zea mays L.) production in the U.S. Midwest do not consider tillage as a factor when an appropriate N rate is determined. Our objectives were to determine the response of grain yield and RTN to increasing rates of fertilizer N for corn grown in three tillage systems. Tillage by N rate experiments we re conducted at eight Central Illinois site-years at three locations and years (1998-2000). Tillag e systems employed were: zero-till, where no tillage was performed at...

Download paper

4. Using Reflectance Sensors to Predict Nitrogen Needs of Cotton

Objectives 1) Develop on-the-go N recommendations based on analysis of the reflectance sensor readings. 2) Determine the sensor model, height, and wa velength that give the best prediction for sidedress N. 3) Determine the best growth stag e for sensor-based sidedressing Relevance There is great spatial variability of N in the soil. Cotton fields that receive a blanket rate of nitrogen, ignoring the vari ability, will have areas of excessi ve growth. This unnecessary growth raises production cost...

Download paper