Now is the time of year to have a pen and paper handy. Keep good records. Write things down while details are still fresh. Note seeding date, rate, fertilizer applied, herbicides applied, etc. Always keep a seed sample and the blue seed tag from each variety and seed lot sown. Store samples in a paper or cloth bag in a cool, dry place. Keeping records and seed samples can help if/when diagnosing an issue later in the season.