The effect of nitrogen fertilizer and foliar nutrition on the content of carotenoids, soluble sugars and phenolic compounds in carrot
2007
Smolen, S. | Sady, W.,Akademia Rolnicza, Krakow (Poland). Katedra Uprawy Roli i Nawozenia Roslin Ogrodniczych
The pot experiment on cultivation of carrot Kazan F1 was conducted in 2004-2005. The research comprised two sub-blocks with and without foliar nutrition. The plants received foliar nutrition thrice: with 2 percent urea solution, with 1 percent solution of Supervit R multicomponent fertilizer and again with 2 percent urea solution. Soil treatment with nitrogen applied within the sub-blocks comprised: control (unfertilized with nitrogen), Ca(NO3)2, NH4NO3, (NH4)2SO4 and CO(NH2)2. Both foliar nutrition and fertilization with (NH4)2SO4 decreased concentrations of soluble sugars in carrot. The storage roots of plants fertilized with Ca(NO3)2, contained the least amount of phenolic compounds. Foliar nutrition did not have any influence on phenolic compound content in carrot. Neither foliar fertilization nor treatment with NH4NO3, (NH4)2SO4 or CO(NH2)2 affected carotenoid concentrations
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