INCREASING SEEDLING DENSITY, AGE, AND NITROGEN-FERTILIZATION INCREASES ONION YIELD Academic Article uri icon

abstract

  • Three onion (Allium cepa L.) cultivar transplants were grown in the greenhouse in 200-cell plastic trays with one, two, or three plants per cell; at 75, 150, or 225 ppm N; and for 8, 10, or 12 weeks. Increasing the number of plants per cell resulted in smaller seedlings at transplanting and reduced time to maturity in the field by 1 week. Two and three plants per cell yielded more bulbs 76 mm in diameter, but one plant per cell had the highest percentage of bulbs 102 mm in diameter. Older seedlings and higher N applications produced larger plants at transplant and larger bulbs at harvest. Increasing N applications reduced maturation time slightly. Bulb fresh weight at harvest and yield of bulbs 76 mm in diameter were highest with 10- and 12-week-old transplants, and at 150 and 225 ppm N.

published proceedings

  • HORTSCIENCE

author list (cited authors)

  • HERISON, C., MASABNI, J. G., & ZANDSTRA, B. H.

citation count

  • 15

complete list of authors

  • HERISON, C||MASABNI, JG||ZANDSTRA, BH

publication date

  • January 1993