Proceedings :: North Central Soil Fertility Conference

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Hubbard, V.C

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Hubbard, V.C

Scharf, P.C

Oliveira, L

Scharf, P

Vories, E.D

Stevens, G

Dunn, D.J

Hubbard, V.C

Phillips, A

Topics

Type

Oral

Year

2005

2007

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Filter results2 paper(s) found.
1. Aerial Photos Can Predict Corn Yield Loss Due to N Deficiency Fields that experience wet weather after N fertilizer is applied may lose N and consequently lose yield. Replacing N may be difficult or expensive after corn is too tall for tractor clearance. A tool to assess the degree of potential yield loss would help corn producers decide how much expense is justified in making late N applications. ... Download paper
2. 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 results2 paper(s) found.

1. Aerial Photos Can Predict Corn Yield Loss Due to N Deficiency

Fields that experience wet weather after N fertilizer is applied may lose N and consequently lose yield. Replacing N may be difficult or expensive after corn is too tall for tractor clearance. A tool to assess the degree of potential yield loss would help corn producers decide how much expense is justified in making late N applications. ...

Download paper

2. 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