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  • 1 Louisiana State University Agricultural Center, Louisiana Agricultural Experiment Station, Hammond Research Station, 21549 Old Covington Highway, Hammond, LA 70403

Field studies were conducted in Fall 1991 and 1992 to determine if cauliflower (Brassica oleracea L. Botrytis Group) could be precision seeded to a stand without subsequent thinning and what the optimum seed spacing necessary to directly seed cauliflower to a stand. Seed spacings of 10, 20, and 30 cm at one seed per hill and 30 cm at two seeds per hill were evaluated for effect on yield, head weight, plant population, and early harvest percentage. As evaluated in the laboratory, seeder precision (accuracy) was good with regard to seed counts and spacing measurements at the various seed spacings. Seeder precision evaluated in the field varied in distribution patterns among seed spacings and years. Cauliflower was successfully precision seeded to a stand without thinning during 2 years of fall plantings. Cauliflower directly seeded at one seed per hill and a 20-cm spacing produced total and average head weights similar to cauliflower seeded 10 cm apart and thinned to 30 cm—the seeding method currently used by some commercial operators.

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