Abstrakt
The content of total iron, cuprum and boron in leaves of four chrysanthemum cultivars was studied in 12 growth cycles starting on the second day of each month throughout the year, from January to December. From the moment of potting, the plants were treated with a short day. In periods of naturally long days, the day was shortened to 10.5 hours using a black-out cover. No supplementary light was used. The time of culture associated with real insolation had a significant influence on micronutrients content. Maximum contents of cuprum and boron were recorded in the leaves of chrysanthemums
grown in periods of light deficit. The reverse regularity in case of iron was observed.
Bibliografia
Adams P., Graves C. J., Winsor G. W., 1975. Some responses of Chrysanthemum morifolium (cv. Hurricane) grown as a year-round crop in a peat-sand substrate, to micronutrients and limming. J. Sci. Fd. Agric. 26, 769–778.
Breś W., 1998. Uprawa chryzantemy wielkokwiatowej (Dendranthema grandiflora Tzvelev) w kulturach bezglebowych z zastosowaniem zamkniętego systemu nawożenia i nawadniania. Roczn. AR w Poznaniu. Rozprawy naukowe 287, 1–105.
Breś W., Jerzy M., 2004a. The effect of planting date on the quality of pot chrysanthemum from the Time group in all-year-round culture. Folia Hortic. (in press).
Breś W., Jerzy M., 2004b. Effect of the planting date on macronutritional status of pot chrysanthemums from the Time group in all-year-round culture. Folia Hortic. (in press)
Jerzy M., Breś W., Pawlak P., 2004. Wpływ doświetlania na stan odżywienia chryzantem uprawianych w okresie naturalnego niedoboru światła. Acta Sci. Pol. Hortorum Cultus 3(2), 41–46.
Kreij C. de, Sonneveld C., Warmenhoven M. G., Straver N., 1990. Guide values for nutrient element contents of vegetables and flowers under glass. Voedingsoplossingen Glastuinbouw 15, 26.
Lunt O.R., Kofranek A.N., Oertli J.J., 1964. Some critical nutrient levels in Chrysanthemum morifolium cv. Good News. Plant Anal. Fert. Probl. 4, 398–413.
Nowosielski O., 1974. Metody oznaczania potrzeb nawozowych. 2.ed., PWRiL, Warszawa, 720.
Sapetto S. 1971. Ocena zapotrzebowania chryzantem na składniki mineralne. Ogrodnictwo 10, 313–115.
Smilde K. W. 1975. Micronutrient Requirements of Chrysanthemums Grown on Peat Substrates. Acta Hort. 50, 101–113.
Sonneveld C., 1991. Rockwool as a substrate for greenhouse crops. Biotechnol. Agric. Forest 17, 285–311.
Waters W.E., 1967. Effects of fertilization schedules on flower production, keeping quality, disease susceptibility and chemical composition at different growth stages of Chrysanthemum morifolium. Proc. Amer. Soc. Hort. Sci. 91, 627–632.
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