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Northwood Laboratory
804 Hwy 15 West
P.O. Box 510
Northwood, ND 58267
Phone: 701-587-6010
Fax: 701-587-6013
Benson Laboratory
902 13th Street North
P.O. Box 187
Benson, MN 56215
Phone: 320-843-4109
Fax: 320-843-2074
Canada Receiving Facility
380 Kimberly Road
Winkler, MB R6W 0H7
Phone: 701-587-6010
Soil Nitrogen Trends – Fall 2021; High Variability Following Drought
in Canola, Corn, Drought, Nitrogen, Regional Data, Soybean, Wheat/by Jodi BoeThis article was originally published following the 2021 drought. The 2022 growing season may seem like a long way off, but spring will be here before we know it. In fact, many growers are already making (or have made) crop choices and seed variety decisions for 2022. One factor that must be considered when making […]
Brent Jaenisch Joins AGVISE Technical Support Team
in AGVISE Laboratories/by Jodi BoeAGVISE Laboratories is proud to announce that Brent Jaenisch has joined the AGVISE team as an Agronomist. Brent provides sales and technical support to AGVISE customers throughout Minnesota, South Dakota, and the northern Corn Belt. You will soon see his contributions in AGVISE newsletters and seminars. Brent is based at the Benson, MN laboratory. Brent […]
Understanding high residual soil nitrate-nitrogen following drought
in Drought, Nitrogen, Regional Data/by John LeeSoil testing after small grains is well underway, and we are seeing higher than normal soil nitrate-nitrogen levels, as expected. Crop yields have varied from much below average to surprisingly decent in some locations. It is easy to understand why residual soil nitrate-nitrogen is high in fields where the 2021 drought was severe and crop […]
Sampling Fields for SCN
in Disease, Soybean/by Richard JennySoybean cyst nematode (SCN) is a microscopic, parasitic worm that attacks the roots of susceptible soybean and dry edible bean, causing unseen or unexplained yield losses. Soybean and dry edible bean are naturally susceptible to SCN, but through plant breeding, most soybeans have some level of resistance, varying in level from good to poor. The most common source […]
Tips for Soil Sampling in Dry Conditions
in Drought, Equipment, Soil Sampling/by John LeeSoil sampling in dry conditions can be difficult. The ground is hard, fields are dry, and getting a consistent soil core depth can take more time than usual. To help you take the best soil samples this fall, we’ve put together some tips and tricks for sampling in dry soil conditions that, when implemented, will help […]
Lessons (Ghosts) of Droughts Past
in Drought, Nitrogen, Regional Data/by John LeeFrom Alberta to Iowa, the region has experienced everything from abnormally dry soil conditions to exceptional drought. In some places, the drought started in 2020 and has continued through 2021. Considering lower than expected crop yields, we expect that residual soil nitrate-nitrogen levels will be much higher than normal in many wheat, canola, and corn […]
Feed Nitrate Testing in Drought Years: How to Collect Corn Samples
in Corn, Drought, Nitrogen, Plant Analysis/by John BrekerThis article was originally published during the 2021 drought. Drought continues to stress crops across the upper Midwest and the Canadian Prairies. As crop conditions continue to deteriorate in some places, we have received more phone calls about salvaging the drought-stressed crop as livestock feed and the need for feed nitrate testing. As you consider […]
Save Time and Avoid Mistakes by Using AGVISOR to Submit Soil Samples Online
in AGVISE Laboratories/by Jodi BoeAGVISE Laboratories is always trying to make soil sampling easier. Since 2011, AGVISE customers have enjoyed submitting soil samples online through our AGVISOR platform. AGVISOR is the online platform that allows you to submit soil samples (conventional, grid/zone, and soybean cyst nematode samples); save grower and field information (so you don’t have to fill it […]
Potassium and Drought: A Two-fold Water Uptake Problem
in Corn, Drought, Potassium, Troubleshooting/by John BrekerPotassium is back on the radar for many farmers and agronomists across the upper Midwest and northern Great Plains. In the past two weeks, corn growth and development have reached the stage where potassium deficiencies are becoming quite apparent, and widespread dry soil conditions during the 2021 drought have worsened the problem. In some instances, corn […]
Plant Sampling Basics – Sampling, storing, and shipping plant samples
in Plant Analysis/by Jodi BoePlant sampling season is in full swing. Agronomists submit plant samples for analysis for a number of reasons: to confirm visible nutrient deficiency symptoms, to detect “hidden hungers”, and to monitor or fine-tune fertilizer plans. For whatever reason you plan to take plant samples, here is a quick refresher on sampling, storing, and shipping plant samples to AGVISE Laboratories. Sampling […]
Is PI 88788 Working in Your Soybean Fields?
in Disease, Soybean/by Richard JennySoybean Cyst Nematode (SCN) is the number one yield-reducing pest in soybeans. Potential yield loss to SCN is expected to rise as more and more populations of SCN overcome the PI 88788 source of resistance. The Peking source of SCN resistance is not near as common as the PI 88788 source but is used in […]
Soybean cyst nematode: Failing resistance traits, increasing SCN populations
in Disease, Soybean/by Richard JennyOriginally featured in the Winter 2020-2021 AGVISE Laboratories Newsletter In 2019, AGVISE Laboratories investigated if popular soybean varieties with PI88788 or Peking SCN-resistance traits were effectively providing protection from soybean cyst nematode (SCN) and found that a number of the varieties failed to do so. We expanded the project in 2020 with cooperation from agronomists […]
Feed Nitrate Testing in Drought Years
in Drought, Nitrogen, Plant Analysis/by John BrekerThis article was originally published during the 2021 drought. Drought is an unwelcome but well-known phenomenon on the Northern Plains and Canadian Prairies. Rainfall has been sparse and scattered across the region, and high temperatures exceeding 90 to 100° F (32 to 38° C) have already caused stress to young crops. These same stresses have also […]
Scouting Shorts: Soybean Iron Deficiency Chlorosis (IDC)
in Iron, Soybean/by John BrekerAs soybean plants emerge and add trifoliate leaves, keep your eyes peeled for soybean iron deficiency chlorosis (IDC). Through the upper Midwest and into the Canadian Prairies, soils with high pH and calcium carbonate pose a special problem for soybean plants and iron uptake. If you encounter soybean IDC, you will start to notice soybean […]
Sidedress Corn Using the Pre-sidedress Soil Nitrate Test (PSNT)
in Corn, In-Season Fertilizer, Nitrogen, Soil Sampling/by John BrekerAs the corn crop begins to emerge, it is time to prepare for sidedress nitrogen applications. Sidedress nitrogen for corn can be applied any time after planting, but the target window is generally between growth stages V4 and V8, before rapid plant nitrogen uptake occurs. Split-applied nitrogen has become a standard practice in corn to reduce in-season nitrogen losses […]