Folia Horticulturae

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The effect of nitrogen fertilization on growth rate of seedlings and yield of the tomato cultivars New Yorker and Szkarłatna Kula in field production

Eugeniusz Kołota, Anita Biesiada, Katarzyna Adamczewska-Sowińska

Department of Vegetable Crops
University of Agriculture
Cybulskiego 34, 50-205 Wrocław, Poland

In an experiment conducted in 1985-1988 the effect of nitrogen supply during propagation on the growth rate of seedlings, nutrient uptake, and yield of fruit after transplanting into the open field was estimated. Seedlings of two cultivars (New Yorker and Szkarłatna Kula) were grown in peat substrate containing 50, 100, 200, 300, and 400 mg of available N per 1 dm3.

The results of the study showed that the maximum growth rate was assured by 200 mg N/dm3, this being associated with a level of 1800-2200 ppm NO3-N and 3.60-3.85% K, depending on the cultivar, and 4150 ppm P in the leaves of 7-week-old seedlings. The best quality seedlings obtained in this treatment resulted in a significantly higher total, marketable as well as early fruit yield than when 50 and 100 mg N/dm3 of peat substrate were applied. Heavy N application at the rate of 300-400 mg/dm3 during propagation inhibited the fruit yield of New Yorker and was not effective for Szkarłatna Kula.

Kołota E., Biesiada A., Adamczewska-Sowińska K., 1992. The effect of nitrogen fertilization on growth rate of seedlings and yield of the tomato cultivars New Yorker and Szkarłatna Kula in field production. Folia Horticulturae IV/2: 3-13.