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Agronomy

Green Stem Syndrome in Soybeans

Green stem syndrome occurs when soybean pods and seeds mature but the stem remains green. When producers proceed to harvest according to seed moisture content, the green stems can make for a slow and difficult harvest. However, delaying harvest until the entire plant turns may increase harvest efficiencies, but result in reduced yields due to lower seed moisture and a higher potential for shatter.

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Fertility Plans for Next Season

If a nutrient deficiency is suspected in your field(s) or you’re planning your fertility for next season, a soil test is a good place to start.  Keep in mind, although soil tests are key in the investigation they shouldn’t be the only tool used for diagnosis.

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Late Season Frost Damage to Soybeans

The effect of late-season frost on a soybean crop depends upon the growth stage of the soybean plants. Yield losses due to frost are uncommon after soybeans have reached full maturity, the R8 growth stage. Temperatures that range from -1°C to 0°C can easily damage the top leaves on a soybean plant.

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Late Season Weed Control in Spring Flooded Fields

Due to the exceptionally wet, late spring many planting decisions were changed and acres were left unplanted.  Late summer and into the fall is a good time to think about control of perennial and problem annual weed species to prevent spread of seeds and to have a cleaner start for next season’s cropping.

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Corn and Soybean Growth Stages Guide

Vegetative stages are identified by the number of collars present on the plant. The leaf  collar is the light-colored collar-like “band” located at the base of an exposed leaf blade, near the spot where the leaf blade comes in contact with the stem of the plant.

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Insect

Scouting for Aphids

Adult aphids are approximately 1.5 mm in length and are a pale greenish-yellow insect with black cornicles (“tailpipes”) and a pale yellow “tail”.  Adults may or may not have wings.  Nymphs look exactly like adults but are smaller and do not have wings

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Phomopsis Seed Decay

Depending on environmental conditions, PSD can be a severe disease in the provinces of Ontario and Quebec.  Prior to harvesting, pods can be opened to scout for diseased seeds.  Management during harvest can help control the disease for future growing seasons.

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Harvest

Combine Adjustment & Moisture Calibration

Calibration at the beginning of harvest is critical to obtaining accurate yield data. Recalibration is necessary for each type of grain harvested, or if significant moisture content changes occur throughout the season. Loads should be collected in representative areas of each field.

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Estimating Potential Yield of a Soybean Crop

Regardless of crop, estimating yield potential can provide information to formulate decisions regarding storage, drying costs, and marketing.   Yield potential is essentially an estimate of four components: number of plants/acre, number of pods/plant, number of seeds/pod, and number of seeds/pound.

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Interpreting Soybean Yield Results - Data Variability and Accumulation

No product, even if it is truly superior, will win every yield plot. Environmental factors, genetic potential, and test variability constitute the variables that contribute to yield differences across test plot sites. Yield ranks among entries in compiled data sets can also change based on the number of tests and the geographical location of the plots. The more data and comparisons that are assimilated and examined the better picture of yield performance. This more robust picture can increase the degree of confidence one can place on picking a winning product.

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Proper Grain Storage for Corn & Soybeans

Storing your corn & soybean crop is a good way to help ensure you can sell when prices are right for you.  It is important to take care when storing your crop so as not to lose potential dollars at the time of sale.

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