Every year Mother Nature creates weather conditions that impact seed quality, and this year was no exception. In fact, adverse weather this past year was more severe and covered a larger geography than most years. Regardless of the severity of the weather conditions, we rigorously put all our Credenz seed lots through strict quality control testing protocols. Only after each lot is completely tested and evaluated will we select the highest quality seed lot to be shipped to our valued customers.
Below we have described just a few of the critical quality tests that each lot goes through before being selected.
Sand Germination Test
Sand Germination is used to determine the percentage of seed that will germinate within a given lot under optimal field conditions. Why do we use the Sand Germination test instead of Rolled Towel Germination? This method provides additional information for each seed lot that shows the amount of seed that has been negatively impacted by mechanical damage or pathological problems.
Accelerated Aging (AA) Test
While not required by law, Credenz brand soybean seeds undergo vigor testing (Accelerated Aging). The test is used to estimate the potential field emergence of a lot under less than optimal conditions. Why do we do the AA test? Less than optimal conditions can be a common occurrence during soybean planting and emergence in many soybean-growing areas.
Soak Test AKA Chlorine Soak Test
This quick test, using bleach and water, is designed to reveal soybean seed coat damage that may have occurred naturally, or during the harvesting or handling process. Why is knowing seed coat damage important? The seed coat is the outer layer of protection for the living soybean, and any damage to the seed coat can lead to abnormal seedling development and could allow pathogens to infect the seed.
Visual Appearance Evaluation Rating
Each harvested and conditioned lot is examined for visual defects, such as purple seed stain, diseased and discolored hilum, or wrinkled or etched seed appearance. This evaluation is used to determine the best quality lots for conditioning and/or distribution to our valued customers.
Other Laboratory Testing
Other testing performed includes, but is not limited to, Trait Purity, VP Hilum, Pure Seed Evaluation, Moisture and Noxious Weed Seed. Quality Control personnel evaluate all test results and select only lots that meet our high standards for distribution.
Harvested seed is conditioned using modern soybean conditioning equipment, i.e., air-screen cleaners, gravity tables, color sorters and/or spiral separators. This equipment removes diseased, damaged, misshapen, discolored seed, weed seed, trash and other undesirable contaminants.
A seed treatment can be used to provide protection against seed- and soilborne pathogens like Rhizoctonia, Pythium, Phytophthora, Fusarium and Phomosis, early-season insects, nematodes and SDS. Seed treatments will be critical to see early vigor and a yield advantage. Implementing a full seed treatment package including a broad-spectrum fungicide will be paramount to maximizing plant stands and vigor. The use of appropriate seed treatment products can help improve germination and emergence when seed-borne diseases are of concern. The protection offered by seed treatments will aid in stand establishment and vigor under challenging weather conditions.
No matter the maturity group, Credenz offers a lineup of high-quality varieties tailored to meet any field condition with a strong defensive package to help combat diseases. In the Midwest, CZ 3309GTLL continues to be at the top of every trial for performance no matter where it’s planted. As for the Southern region, Credenz varieties are bred to broadly adapt across a variety of soil conditions and cropping systems, including livestock and cotton environments.