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Soil Fertility
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Cover Crops 101
Author(s) Daniel H. Smith, Mimi Broeske, Jamie Patton, Kevin Shelley, Francisco Arriaga, Bryan Jensen, Maxwel Coura Oliveira, Brian Briski, Barry ...
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Nutrient Application Guidelines for Field, Vegetable, and Fruit Crops in Wisconsin
Author(s) Carrie A.M. Laboski, John B. Peters. Growers recognize the importance of a good soil testing program, which, despite some limitations, ...
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Cover Crops, Manure, and Nitrogen Management
Author(s) Matt Ruark, Jaimie West, Geoffrey Siemering. Using cover crops following corn silage harvest and manure application provides an excellent...
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Grain Management Considerations in Low-Margin Years
Author(s) Damon Smith. During years when profit margins are low, knowing the right steps to take to produce grain can be challenging. This fact sh...
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Sampling Soils for Testing
Author(s) John B. Peters, Carrie A. M. Laboski. One acre of soil to a depth of 6 inches weighs about 1,000 tons, yet less than an ounce of it is ...
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Understanding Plant Nutrients: Soil and Applied Potassium
Author(s) Emmett Schulte, Keith Kelling. Most Wisconsin soils need relatively large quantities of applied potassium because of removal by crops an...
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Understanding Plant Nutrients: Soil and Applied Nitrogen
Author(s) Larry Bundy. Find out how nitrogen reacts in your lawn or garden and how to test for and apply it (6 pages; Revised in 1998). Download
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Soil Fertility Guidelines for Pastures in Wisconsin
Author(s) Carrie M. Laboski, Kevin Shelley. The soil fertility guidelines contained in this publication help Wisconsin graziers maintain an adequ...
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Understanding Plant Nutrients: Soil and Applied Sulfur
Author(s) Emmett Schulte, Keith Kelling. Although sulfur is described as a secondary plant nutrient, largely because it is not deficient as often ...
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Understanding Plant Nutrients: Soil and Applied Molybdenum
Author(s) Emmett Schulte. Molybdenum (Mo) was identified as an essential element for higher plants in 1939. Find out how this mineral can affect y...
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Understanding Plant Nutrients: Soil and Applied Manganese
Author(s) E.E. Schulte, K.A. Kelling. Manganese (Mn) deficiency and toxicity have been noted in Wisconsin on various soils. Find out how this mine...
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Understanding Plant Nutrients: Soil and Applied Magnesium
Author(s) Emmett Schulte. Magnesium (Mg) is abundant in most Wisconsin soils. Find out how this mineral can affect the soil in your lawn or garden...
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Understanding Plant Nutrients: Soil and Applied Iron
Author(s) Emmett Schulte. Find out how iron, the fourth most-abundant element on earth, can affect the soil in your lawn or garden (2 pages; 1999)...
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Understanding Plant Nutrients: Soil and Applied Copper
Author(s) Emmett Schulte, Keith Kelling. Copper deficiencies are rare in Wisconsin. Most verified cases have involved small grains, lettuce, or on...
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Understanding Plant Nutrients: Soil and Applied Chlorine
Author(s) Emmett Schulte. The names chlorine and chloride are frequently confused. The non-reactive chloride is the form present in soils and is t...
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Understanding Plant Nutrients: Soil and Applied Calcium
Author(s) Emmett Schulte, Keith Kelling. Calcium (Ca) is relatively abundant in soils and rarely limits crop production. Find out how to test for ...
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Alfalfa Fertilization
Author(s) Keith Kelling. Modern management of alfalfa uses improved varieties, intensive harvest schedules, direct seeding, and up-to-date fertili...
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The Value of Trichoderma for Crop Production
Author(s) Geoffrey Siemering, Matthew Ruark, Amanda Gevens. Trichoderma are fungi found worldwide that grow in and around plant roots and can incr...
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The Value of Bacillus amyloliquefaciens for Crop Production
Author(s) Geoffrey Siemering, Matthew Ruark, Amanda Gevens. Bacillus amyloliquefaciens (BAA) is a bacterium found in soil ecosystems worldwide tha...
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The Value of Arbuscular Mycorrhizal Fungi for Field Crops
Author(s) Geoffrey Siemering, Matthew Ruark, Francisco Arriaga, Erin Silva, Heidi Johnson. Many important field crops can benefit from an associat...
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Understanding Plant Nutrients: Soil and Applied Zinc
Author(s) Emmett Schulte. Plants vary considerably in their requirements for zinc. In Wisconsin, zinc deficiencies have been observed on corn, sna...
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Understanding Plant Nutrients: Soil and Applied Phosphorus
Author(s) Emmett Schulte, Keith Kelling. Although some Wisconsin soils may require large phosphorus additions for best yields, the past use of pho...
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Soil Calcium to Magnesium Ratios—Should You be Concerned?
Author(s) Emmett Schulte, Keith Kelling. While some have claimed that there is an ideal soil calcium-to-magnesium ratio (Ca:Mg), and that Wisconsi...
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Aglime—Key to Increased Yield and Profits
Author(s) Emmett Schulte, Keith Kelling. Aglime is the cornerstone of a good soil fertility program. Aglime and fertilizer work together to build ...
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