Certified Crop Advisor Practice Exam

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If the pure seed content is 90% and the germination rate is 90%, what is the percentage of Pure Live Seed (PLS)?

The correct answer is: 81%

To determine the percentage of Pure Live Seed (PLS), you can use the formula: PLS (%) = Pure Seed Content (%) × Germination Rate (%) In this case, the pure seed content is 90%, and the germination rate is also 90%. Thus, the calculation for PLS would be: PLS (%) = 90% × 90% PLS (%) = 0.90 × 0.90 = 0.81 (or 81%) This indicates that 81% of the seed is both pure and capable of germinating, which is the definition of Pure Live Seed. Understanding this concept is crucial for ensuring effective planting and crop establishment, as only the seeds that are both pure and viable will contribute to the overall crop yield. The other options do not align with this calculation, which reinforces the importance of using accurate figures for both pure seed content and germination rates when evaluating seed viability.