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Articles Tagged with ''potassium''

How Much Fertilizer Will Move Soil Test Levels?

November 20, 2012 | Posted in Nutrient Management

Source: Ohio State University

Phosphorous and potassium exist naturally in the soil as a part of rock, clay and other minerals that make up soils.

Soil Test Results May Not Reveal Accurate Field Nutrient Availability

November 5, 2012 | Posted in Nutrient Management

Source: DuPont Pioneer

Growers conducting soil tests this fall may be surprised at unexpectedly low potassium (K) levels,according to DuPont Pioneer agronomy experts.

Better No-Till Soils Require A ‘Balancing Act’

No-tillers should ensure farm ground is healthy and biologically active before turning to biological amendments, says a veteran no-till consultant.

By John Dobberstein posted on July 1, 2012 | Posted in Nutrient Management, Soil Health

When no-tillers are struggling to climb over a plateau in their crop yields, their first step should be finding out what’s happening with the nutrient balance and biological activity in their fields.

Corn Stover Removal And No-Till: A Balancing Act

No-tillers that follow guidelines can remove some stover from continuous-corn fields and still warm up soils, improve nitrogen efficiency and retain organic matter.

By Dan Zinkland posted on June 1, 2012 | Posted in Residue Management

No-tillers growing continuous corn often face a dilemma when residue piles up in their fields after harvest, leaving a mat that can keep soils cold and wet and make planting difficult.

Fine-Tuning Fertility In A Quest For Top Yields

Pennsylvania no-tiller Dean James is focusing on secondary macronutrients, micronutrients and precision fertilizer applications to bring yields to the next level.

By Martha Mintz posted on June 1, 2012 | Posted in Nutrient Management, Precision Agriculture

Plugging the lowest leak in the fertility barrel to boost yields and cut waste is the goal Dean James set for the 1,250-acre farm he manages. But achieving that goal requires creating a detailed fertility picture.

Change In Phosphorus And Potassium Contents Of Corn Stalks Over Time

December 17, 2011 | Posted in Nutrient Management

Source: By Antonio P. Mallarino and Ryan R. Oltmans, Department of Agronomy, Iowa State University

Increasing corn yield and harvest of cornstalks for feed, bedding or bioenergy production are generating numerous questions about phosphorus and potassium concentrations in cornstalks and removal.

A Winning Formula To Break Down Tough Residue

Agronomist says a mixture of 28%, Thio-Sul, humates, sugar and water can help digest today’s tough corn stalks for better corn yields the following year.

By Darrell Bruggink posted on December 1, 2011 | Posted in Residue Management, Nutrient Management

Corn residue has its good and bad points. It’s not so good if it interferes with no-till seed placement or crop emergence, but it’s a great source of food for soil biological activity and contains valuable nutrients for the next year’s crop.

Nutrient Removal Rates In Grain Crops

October 25, 2011 | Posted in Nutrient Management

Source: By George Silva, Michigan State University

As crops are being harvested and grain is taken to the storage or elevator, it is time to estimate the amount of nutrients that are removed by this grain, particularly the three major nutrients: nitrogen, phosphorus and potassium.

Be Cautious When Interpreting Early Fall Soil-Test Results

October 13, 2011 | Posted in Residue Management, Nutrient Management, Soil Health

Source: By Antonio P. Mallarino, Department of Agronomy,

Sampling under very dry conditions may increase soil sampling error because it is more difficult to control sampling depth and proper soil core collection.

Hit Spots With Strip-Till Fertility

October 6, 2011 | Posted in Nutrient Management

Fabian Fernandez, University of Illinois Extension specialist in plant nutrition and soil fertility, offers a few thoughts on applying nitrogen, phosphorus and potassium with strip-till this season.

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