Herbicide Tolerance Test - OSIA now
offers herbicide tolerance testing for soybean and corn seed lots in order to
confirm the presence of resistant genes and to identify seed lot contamination
with non-tolerant varieties. Both 8 to 10 day "Quick" tests ($18/sample)
and 21 day Greenhouse Growout ($28/sample) options are available. Clients
should carefully indicate on the seed sample packet the kind of test(s)
desired.
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Soybean Herbicide Tolerance Tests: Roundup
Ready®, STS, & Liberty Link™.
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Corn Herbicide Tolerance Tests: Roundup
Ready®; Liberty Link™-submit PAT & non-PAT of the same hybrid.
Standard Warm Germination - Reflects field emergence
potential of seed under ideal field conditions. Treatment may or may not
improve this value.
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Registered
Seed Technologist on Staff.
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Cold Test - Reflects field emergence potential of seed
under field stress conditions of low temperature and high moisture. Treatment
may or may not improve this value.
Tetrazolium (TZ) - This test known as the "quick test"
for seed lot viability and can be very useful when an approximate germination
is needed rapidly. After conditioning, seeds are chemically treated to give an
indication of viable, abnormal and dead seeds in a lot. This test will not
indicate disease as our warm germination test does. This test is highly
reliable for corn, wheat and grasses.
Seed Count - This test will give the number of seeds
per pound for seedlots. This information is becoming increasingly important for
precision planting purposes of row crops and cereal grains. Useful in
establishing a planter/drill seeding rate to achieve a desired plant population
per acre. Consult your implement handbook for proper planter or drill
calibrations.
Moisture Content - Moistures above 12% are unsafe for
soybean seed storage and may result in reduction of germination over time.
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A
full line of turf seed and row crop testing services.
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Pure Seed - Percentage of seed in the sample that is
potentially usable. A high percentage is desirable.
Inert - Percentage of foreign material such as empty
pods, broken seeds, dirt, etc. A low percentage is preferable.
Weeds - Percentage of all seed of plants recognized as
weeds. A zero percentage is best.
Other Crop - Percentage of sample composed of other
crops plants such as corn in soybeans. A low or zero percentage is best.
Abnormal Percentage - The percentage of seedlings
failing to develop properly due to mechanical injury, immaturity, etc.
Disease Percentage - The percentage of abnormal
seedlings expressing disease infection. Treating seed may or may not improve
this value.
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Seed Quality Ratings |
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Low |
Medium |
High |
Standard Germination: |
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Soybeans |
<84% |
85-89% |
90%+ |
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Corn |
<89% |
90-94% |
95%+ |
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Small Grains |
<79% |
80-84% |
85%+ |
Cold Test: |
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Soybeans |
<59% |
60-69% |
70%+ |
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Corn |
<69% |
70-79% |
80%+ |
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