Category Archives: Fertility & Soil

Considerations for late season UAN applications Matt Ruark, Extension Soil Scientist When deciding to make any late-season, rescue application of nitrogen (N), you will need to evaluate your N management program relative to the potential for N losses. Heavy rainfalls … Continue reading

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Use caution if planting oilseed radish on highly erodible soil types

Use caution if planting oilseed radish on highly erodible soil types Heidi Johnson, Jefferson County UWEX Agriculture Agent, Jim Stute, Rock County UWEX Agriculture Agent Using oilseed radish as a cover crop after winter wheat has been steadily increasing in … Continue reading

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Purple corn in late June, should you be concerned?

Purple corn in late June, should you be concerned? Carrie Laboski, Extension Soil Fertility Specialist, Department of Soil Science, UW-Madison There are some corn fields in Western Wisconsin and perhaps elsewhere in the State that have the purple colorations associated … Continue reading

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Assessing the Potential for Nitrogen Loss from Heavy Rainfalls

Assessing the Potential for Nitrogen Loss from Heavy Rainfalls Carrie Laboski, Extension Soil Fertility Specialist, Department of Soil Science, UW-Madison Several inches of rainfall over the past week and a half have many growers and agronomists concerned about the potential … Continue reading

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Using soil test results for more than just nutrient recommendations

Using soil test results for more than just nutrient recommendations By Amber Radatz, with assistance from John Peters and Matt Ruark, of The Department of Soil Science, UW Madison and Dennis Frame of UW Discovery Farms June 14, 2011 Results … Continue reading

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New video – Wisconsin’s pre-sidedress nitrate test (PSNT)

New video – Wisconsin’s pre-sidedress nitrate test (PSNT) Carrie Laboski, Extension Soil Scientist, Dept. of Soil Science, University of Wisconsin-Madison, Kevin Shelley, Outreach Specialist, Nutrient & Pest Management Program, University of Wisconsin- Madison The corn has been planted and is … Continue reading

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Longevity of S Availability from Large Gypsum Applications

Longevity of S Availability from Large Gypsum Applications Dick Wolkowski, Extension Soil Scientist The recent interest in the use of FGD gypsum as a soil amendment has resulted in some questions about the longevity of the S supply to crops … Continue reading

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Selecting a N fertilizer rate when corn is $7/bu

Selecting a N fertilizer rate when corn is $7/bu Carrie Laboski, Extension Soil Scientist, Dept. of Soil Science, Univ. of Wisconsin-Madison With the current price of corn in the $7/bu range, growers and agronomists have been asking if they should … Continue reading

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Influence of crop rotation and nitrogen fertilizer on oat yield

Influence of crop rotation and nitrogen fertilizer on oat yield Matt Ruark, Dept. of Soil Science, Tim Wood, Lancaster Agricultural Research Station Current UWEX nitrogen (N) application guidelines for oats are 40 lb/ac for soils with 2 to 10% organic … Continue reading

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Field-Scale Evaluation of Sweet Corn Response to Nitrogen Fertilizer Application Rates on Wisconsin’s Central Sands: Results After Two Years of Data Collection

Field-Scale Evaluation of Sweet Corn Response to Nitrogen Fertilizer Application Rates on Wisconsin’s Central Sands: Results After Two Years of Data Collection By Ken Schroeder, Matt Ruark, and Don Genrich Wisconsin ranks second in the nation for production of sweet … Continue reading

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