Brian Krienke - Soils Extension Educator

(student, faculty)
Graduate Student Post-Baccalaureate Grad Studies
Work PLSH 362E
Lincoln NE 68583-0915
US
Work 402-472-5147 On-campus 2-5147

@krienke_unlsoil

Cover of the new ISU Publication,

Iowa Releases New Publication on Use of the Late Spring Soil Nitrate Test June 8, 2017

Following heavy spring rains, farmers may be interested in testing for soil nitrogen availability. This article notes a new publication from Iowa State University on using the Late Spring Soil Nitrate Test (LSNT) as well as other options for assessing soil nitrate.

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Chart of potential for nitrate-N leaching in spring 2017

Risk of Nitrate Leaching Across Nebraska as of May 21, 2017 May 25, 2017

Following heavy spring rains UNL soil scientists model potential loss of nitrate-N to soil leaching, finding an average 14% loss from mid-April levels, with three sites with much higher losses.

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Figure 1. Liquid fertilizer manifold used on a planter for applying starter fertilizer. (Photo by Charles Shapiro)

Starter Fertilizer: When is it Warranted? April 12, 2017

As you evaluate the cost of inputs, consider this: Only focusing on expenses without subsequent income changes is misleading. The most profitable plan uses the most profitable inputs. Is a starter fertilizer one of those inputs? The authors look at university and grower research under various conditions to see when a starter fertilizer offers economic benefits.

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Phosphorus yield effect

You Can Postpone Phosphorus, Potassium, and Zinc Fertilizer Applications When…. February 28, 2017

Soil testing and applying only the soil nutrients needed to produce your yield goal can provide a significant savings in fertilizer costs. Nebraska research shows growers can save as much as $52.12/acre for postponing phosphorus, potassium and zinc applications.

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The Long View of Nitrogen Recommendations from Nebraska Extension January 6, 2017

At the 2017 Crop Production Clinics, the Nebraska Extension Soils Team is presenting a historical overview of how nitrogen recommendations for corn have developed and changed since the 1950s. We are also discussing what may lay ahead for nitrogen management.

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Nitrogen cycle
Figure 1. The nitrogen (N) cycle illustrates how complex this nutrient is. There are several ways this essential nutrient for corn production can be lost. (Source: Nebraska Extension guide, Nutrient Management for Agronomic Crops, EC155)

Q&As: How much N is Left? Do I Need More Starter When Replanting? May 27, 2016

Well, it seems not much has changed since the last article I wrote on nitrogen (N) management a few weeks back: more rain, more to come, and more uncertainty with regard to N. So, what do we do now and why I am not worried about the other nutrients? Why is it always about N?

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Managing N in a Wet Spring May 5, 2016

USDA NASS estimated 26% of Nebraska’s corn acres had been planted as of May 2, well behind last year’s pace of 45% and slightly behind the five-year average of 31%. The pace is undoubtedly being affected by the amount of precipitation across the state and the wet field conditions (Figures 1 and 2).

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Managing and Preparing for Nitrogen Loss March 24, 2016

Spring is officially here, and with it the uncertainty of spring rains or late snow showers. For many Nebraska farmers, finishing preparation for planting or waiting on the starting line to plant is the number one priority. Nitrogen (N) management may not be the most important thought crossing their minds. But, now is a great time to think about N management for this upcoming season.

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