Proceedings :: North Central Soil Fertility Conference

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Sims, A.L

Vories, E.D

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Authors

Sims, A.L

Lamb, J.A

Kaiser, D

Rosen, C

Strock, J

Vetsch, J

Farmaha, B

Fabrizzi, K

Oliveira, L

Scharf, P

Vories, E.D

Stevens, G

Dunn, D.J

Hubbard, V.C

Phillips, A

Topics

Type

Oral

Year

2014

2007

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Filter results2 paper(s) found.
1. Minnesota Long-Term Phosphorus Management Trials: Phase I, The Build Period Phosphorus (P) fertilizer recommendations are usually made using one of two philosophies, Build and Maintain or Sufficiency. In recent years, the Sufficiency approach has been questioned because of concerns of reducing soil test levels and yield sustainability and whether it has the same yield potential as the Build and Maintain approach. Trials were initiated in 2010 at six locations across Minnesota to develop various soil test P Interpretation Classes in replicated experiments. The initial phase... 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. Minnesota Long-Term Phosphorus Management Trials: Phase I, The Build Period

Phosphorus (P) fertilizer recommendations are usually made using one of two philosophies, Build and Maintain or Sufficiency. In recent years, the Sufficiency approach has been questioned because of concerns of reducing soil test levels and yield sustainability and whether it has the same yield potential as the Build and Maintain approach. Trials were initiated in 2010 at six locations across Minnesota to develop various soil test P Interpretation Classes in replicated experiments. The initial phase...

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