ISHS Acta Horticulturae 430: VII International Symposium on Flowerbulbs
NUTRITIONAL REQUIREMENT AND FERTILIZATION STRATEGY IN LIATRIS CALLILEPIS |
| Authors: | F. Schiappacasse, J. Hirzel, E. Ruz |
| Abstract:
Liatris callilepis is one of the three main Chilean cut flower exports in terms of exported volume, that reaches 7 000 boxes and it is expected to increase in the coming years. No data are available in Chile on nutritional requirements of liatris. A study was conducted to determine the dry matter accumulation and N, P, and K uptake under different levels of N, P, and K fertilization. Liatris corms were field-planted in late spring in a soil high in organic matter and potassium. The crop was fertilized with 0:0:0, 350:400:40, and 700:800:80 kg/ha of N, P2O5, and K2O, respectively. At flower harvest uptake in the unfertilized treatment was 240 kg N, 30 kg P and 316 kg K per ha (corm content at planting time is not included). Total N uptake was highest in the treatment with the maximum N levels, while P and K uptake did not show significant differences among treatments, except in two stages of development. Total dry matter accumulation and flower quality were unaffected by increased fertilizer dosage. | |
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