nitrogen

Herbicides, Fungicides, Nitrogen and Sulphur – Prioritizing trips across your winter wheat fields this spring

Joanna FollingsJoanna Follings May 8, 2019 44573 Comments Off on Herbicides, Fungicides, Nitrogen and Sulphur – Prioritizing trips across your winter wheat fields this spring
Winter Wheat

Joanna Follings, Mike Cowbrough, Peter Sikkema, Dave Hooker and Peter Johnson Mother nature has finally awarded us with some sun and warmer temperatures which will hopefully get the remaining winter wheat stands off to the races.  However, as we get out into the fields some are questioning what to prioritize and what practices to avoid so that we can minimize…

Fine-tuning Nitrogen Strategies on Corn

Scott BanksScott Banks March 19, 2019 3296 Comments Off on Fine-tuning Nitrogen Strategies on Corn
Corn

  The nitrogen (N) fertility algorithm proposed at the recent Eastern Ontario Crop Conference by Dr. Dave Hooker, University of Guelph- Ridgetown Campus, was “80% of the recommended N applied pre-plant, then 1 lb/ac of additional N for each millimetre (mm) of rain from the V7 to VT corn growth stage.” Drs. B. Deen, D. Hooker and J. Nasielski of…

Looking for Tillers? Consider Early Season Nitrogen Management!

Joanna FollingsJoanna Follings March 18, 2019 864 Comments Off on Looking for Tillers? Consider Early Season Nitrogen Management!
Winter Wheat

This past fall brought challenges for many growers.  Prolonged wet weather delayed soybean harvest and pushed winter wheat seeding into late October and early November for some.  Before the snow fell, many fields had not yet emerged.  While the seed did germinate and vernalize, the late planting meant no tiller development.  As a result, nitrogen management will be important in…

Evaluation of Nitrogen and Planting Equipment in Spring Canola

Meghan MoranMeghan Moran March 21, 2018 2042 Comments Off on Evaluation of Nitrogen and Planting Equipment in Spring Canola
Canola

Spring canola yields have been strong in Ontario in the past two years, but are we meeting our yield potential? Are there ways to profitably increase yields? In 2017 a  trial was conducted by Deb Campbell of Agronomy Advantage Inc. and Darcy Martin on Darcy’s farm in Kenilworth, Ontario to test and demonstrate management practices that maximize canola yields. Profitability…

Corn Nitrogen Calculator App

Ben RosserBen Rosser January 9, 2016 2683 Comments Off on Corn Nitrogen Calculator App
Corn

The corn nitrogen calculator app generates a recommendation for the most economical N rate for a corn field. It is based on more than 40 years of Ontario research and takes into account soil type, rotation, and the cost scenario (i.e. anticipated cost of N and price of corn). The app allows you to save the recommendations for each field…

2015 Ontario Soil N Survey

Ian McDonaldIan McDonald June 11, 2015 2692 Comments Off on 2015 Ontario Soil N Survey
Soil Fertility

Co-author Ken Janovicek, University of Guelph. Background The OMAFRA field crop unit in collaboration with farm cooperators, agribusiness and SGS-AgriFood Labs conducted the annual survey of soil nitrate nitrogen levels across the province from June 3rd to June 5th, sampling over 130 fields. The samples were collected after heavy rainfall events during the weekend of May 30-31, where some areas received up to…

Winchester AgBreakfast Minutes – April 28, 2015

OMAFRA Field Crop TeamOMAFRA Field Crop Team April 30, 2015 1430 Comments Off on Winchester AgBreakfast Minutes – April 28, 2015
Ag Business Minutes

Conditions: Below average temperatures persisted throughout most of April. At Ottawa, approximately 100 CHU and 65 mm of rain were accumulated in April. Soils dried slowly and field activity only picked up during the last few days of April. Forages: Alfalfa winter survival is excellent, generally in the 90% plus range. Alfalfa fields not harvested last fall have about 3”…

Winchester AgBreakfast Minutes – April 14, 2015

OMAFRA Field Crop TeamOMAFRA Field Crop Team April 17, 2015 1478 Comments Off on Winchester AgBreakfast Minutes – April 14, 2015
Ag Business Minutes

Conditions: Moderate temperatures at the end of winter, combined with limited precipitation minimized spring water runoff and soil erosion. Soil is drying slowly, allowing for only limited field activity to date. Alfalfa: Winter survival generally looks excellent. Alfalfa has 1 to 2 inches of new growth at this point and is showing no sign of heaving damage. Tap roots just…

Verifying a Pre-Sidedress Soil Nitrate Threshold Test for Evaluating Nitrogen Top-Up Needs

Greg StewartGreg Stewart February 4, 2015 2053 Comments Off on Verifying a Pre-Sidedress Soil Nitrate Threshold Test for Evaluating Nitrogen Top-Up Needs
Corn

Purpose: Pre-sidedress soil nitrate test (PSNT) provide a means of estimating soil nitrogen supply, and can aid producers in fine-tuning their nitrogen application rates for corn. One drawback of current soil nitrate tests is that they are only calibrated for situations where all of the nitrogen being measured has come from soil mineralization, that is cores need to be taken…

Nitrogen Status in 2014 Ontario Corn Fields

Ian McDonaldIan McDonald June 14, 2014 2119 Comments Off on Nitrogen Status in 2014 Ontario Corn Fields
Corn

Greg Stewart, Peter Johnson and Ian McDonald, OMAF & MRA   Background In 2014 the OMAF & MRA field crops team once again surveyed a range of corn fields to determine the impact that this springs weather has had on the level of residual soil nitrate. This year April was cool with less growth than normal and from May 1…

Winchester Ag Breakfast Meeting Notes – May 13, 2014

OMAFRA Field Crop TeamOMAFRA Field Crop Team May 14, 2014 1660 Comments Off on Winchester Ag Breakfast Meeting Notes – May 13, 2014
Ag Business Minutes

Conditions: Over 75% of the manure is out and 40-50% of the ground has been worked. Forages: Nitrogen fertilizer has largely been applied on grass hay fields. Alfalfa growth has picked up over the last week (6” to 8”). While alfalfa winter survival is generally good, winterkill (Figure 1) is becoming evident and some fields will need to be rotated…

Wheat Nitrogen Strategies

Peter JohnsonPeter Johnson March 9, 2014 9238 Comments Off on Wheat Nitrogen Strategies
Winter Wheat

Wheat yields pushing 150 bu/ac are very possible with good management and increased nitrogen (N) rates.  Recent research clearly shows an interaction between fungicides and nitrogen.  But high nitrogen rates immediately raises questions about lodging, nitrogen source, and application timing.  Wheat’s nitrogen demand is much earlier than corn, so nitrogen management needs to be different.  What is the right rate,…

Nitrogen Status in 2013 Corn Fields

Table 1-24 Pub 811
Greg StewartGreg Stewart June 11, 2013 1743 Comments Off on Nitrogen Status in 2013 Corn Fields
Corn

Co-Authored by Ian McDonald Background: In 2013 a range of corn fields were sampled to determine what impact the weather has had on the level of residual soil nitrate.  This year April was cool and relatively wet while the first half of May came in warm and dry followed by conditions since mid-May that have been cooler and wetter than average….

Getting Started with Variable Rate Nitrogen

Nicole RabeNicole Rabe May 21, 2013 3161 Comments Off on Getting Started with Variable Rate Nitrogen
Precision Agriculture

When you don’t have the luxury of starting with multiple years of corn yield data how does one get started with a variable rate nitrogen strategy? Initial assessment of the field needs to question how variable the field actually is, and more to the point – what is driving the variability across that field? Greg Stewart and I began this…

ESN Controlled Release Fertilizer on Spring Wheat

Scott BanksScott Banks April 2, 2013 2321 Comments Off on ESN Controlled Release Fertilizer on Spring Wheat
Soil Fertility

Does ESN pay in spring wheat? Results from two on-farm sites in eastern Ontario showed no advantage in grain yield or protein content with the use of ESN in 2011 (see Table 1). There was also no significant difference in residue soil nitrogen levels. As expected there was also no impact in the percentage of Fusarium Damage Kernels (FDK%) or…

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