Multi-seeded onions. II. Effect of block spacing and transplant age on yield of onions
Tadeusz Wojtaszek, Edward Kunicki, Franciszek Bednarz, Małgorzata Poniedziałek
Institute of Vegetables and Ornamental Plants
Faculty of Horticulture, Agricultural University
29 Listopada 54, 31-425 Kraków, Poland
In a two-year trial 30, 40, and 50 days old onion seedlings of the
cultivar Wolska were raised in peat blocks with a target population of 5
plants/block, the blocks being spaced 30×20, 30×15, and 30×10 cm apart,
giving target densities of 83.3, 111.1, 166.7 plants/m2.
The marketable yield of multi-seeded onions was not affected by transplant
age but increased significantly with increased plant density, ranging from
44.7 to 56.5 and from 46.8 to 49.5 t/ha in the 1987 and 1988 seasons
respectively. The widest spacing consistently produced the highest
proportion of bulbs over 50 mm in diameter in the marketable yield, giving
30.4 and 25.3 t/ha of bulbs over the 50 mm size grade in the 1987 and 1988
Wojtaszek T., Kunicki E., Bednarz F., Poniedziałek M., 1993. Multi-seeded onions. II. Effect of block spacing and transplant age on yield of onions. Folia Horticulturae V/1: 11-18.