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Growing Soybeans

All Growing Soybeans Content

A color-coded map indicating the average date of 32 degree temperatures across various Midwestern states.

Fall Frost and September Climate Outlook for 2019

This year’s struggles with weather and climate are continuing this fall. Late planting of corn and soybeans in the spring have now combined with near average or cooler than average summertime temperatures. This combination has led to slow crop growth and the need for an extended frost-free season to ensure these crops reach maturity.

Map of United States with green areas favored to be wetter than average and tan areas favored to be drier than average.

May 2019 Climate Outlook: April Showers Bring May Showers?

The precipitation outlook for May does not show much promise of relief from moisture, as wetter than average conditions are slightly more favored than drier conditions. In addition, cooler than average temperatures are more likely for the first half of May and could continue for much of the month.

Bar Graph: South Dakota: Farm numbers by size in acres (1997-2017). For a complete description, contact Alvaro Garcia at 605-688-4940.

Farm Size in South Dakota: Where Are We Heading?

Agriculture is going through some difficult times not only in the United States, but globally as well. Aside from some short-lived price hikes for different products, the overall trend has been to higher costs of production and lower output prices.

Two side-by-side field plots. The left field has corn planted, and the right has soybeans.

Field Studies: Replicated Comparisons vs. Side-by-Side Comparisons

How should a basic study be set up or laid out in the field? One very common approach is to divide a field in half and compare the halves or possibly compare two fields in close proximity and see which variety or practice yields highest. This approach can end with very misleading results because of the variability that exists across a field or fields due to many factors.

a bare, freshly tilled field awaiting planting.

Field Studies: What do You Mean 5 Bushels Per Acre is Not Significant?

Utilizing sound research results to help make decisions on the farm is a wise business practice. It can be confusing, however, when you see two numbers that are clearly not the same labeled as “not significantly different.”

two side-by-side fields. The left is labeled "a". It has uniform rows and soil. The right is labeled "b". It has ununiform rows and varying soil quality.

Field Studies: Setting up a Trial

Increasingly, farmers are generating on-farm research data that encompasses a wide-range of practical topics. However, setting up those experiments so that the data is statistically valid is not necessarily common knowledge.

Picture shows a dense and diverse cover crop mix grown after cereal grain.  The cover crop is very green with many brassica and grass plants growing. The top third of the picture is the sky with some gray clouds.

South Dakota Land Use Trends (2012-2017)

Significant education efforts for natural resource conservation have occurred in South Dakota during the last five years. Many stakeholder groups have brought awareness for soil health and water quality to the forefront.

A small pile of harvested non-gmo soybeans on a grey cloth.

Glyphosate Resistance in Soybeans

Many weeds have developed glyphosate resistance in the past few years. Many producers who use Roundup Ready soybeans have a temptation to rely on glyphosate products to control post-emergent weeds, causing them to potentially become resistant to the chemical. If producers are unable to gain control over the weed, then weed competition will cause a significant yield loss.

A pair of hands holding a soybean sample with three leaves.

Plant Nutrient Analysis: Do your soybeans have the right stuff? 

There has been a renewed interest in taking samples of soybean leaves for nutrient analysis as a quality control tool to ensure soil and the fertilizer programs are meeting the needs of the plant to eliminate nutrients as a yield limiting factor.

SDSU Research Shows Effects Of Volunteer Corn In Corn And Soybeans

In 2007, researchers at South Dakota State University indicated that volunteer corn is much less competitive in corn than soybean. The South Dakota study (Alms et al. 2007) evaluated the full season effect of a range of volunteer corn densities (800-14,000 plants/acre) on both corn and soybean and reported yield losses that ranged from 0% to 13% in corn and 0% to 54% in soybean.