AbstractČEKEY, N., ŠLOSÁR, M., UHER, A., BALOGH, Z., VALŠÍKOVÁ, M., LOŠÁK, T.: The eff ect of nitrogen and sulphur fertilization on the yield and content of sulforaphane and nitrates in caulifl ower. Acta univ. agric. et silvic. Mendel. Brun., 2011, LIX, No. 5, pp. 17-22 In the fi eld experiment with caulifl ower, we investigated the eff ect of four diff erent variants of nitrogen and suplhur fertilization on quantity and quality of caulifl ower in the term of sulforaphane content and nitrate accumulation. The infl uence of fertilization was statistically signifi cant between control variant and fertilization variants and in both experimental years within all parameters of caulifl ower yield. The highest yield of caulifl ower was reached at the variant 4 when it was fertilized on the level of nutrients N:S = 250:60 kg.ha −1. The increase of yield against control variant represented value 26.6%. The applied fertilization positively aff ected on the accumulation sulforaphane in the caulifl ower. Its highest content was determined at the variant 4 (N:S = 250:60 kg.ha −1 ). In comparison with control variant, the sulforaphane content was increased about 18.4%. On the other side, applied nutrition resulted in increased accumulation of nitrates in the caulifl ower. The most increase of nitrate content, compared to the control variant, was also ascertained at the variant 4 (about 31.4%). The gathered data point towards to the possibility and way how we could eff ect on the increased accumulation of sulforaphane in caulifl ower fl orets. This sphere of fertilization eff ect on the sulforaphane content is not suffi ciently explored well. Our aim is to continue in this research subject and to fi nd way how to cultivate vegetables with higher content of health-promoting compounds.
The small field experiment with broccoli (variety ‚Tiburon F1‘) was established in The Botanical Garden of Slovak University of Agriculture in Nitra. In this experiment, we investigated the effect of four variants of nutrition on the broccoli yield, content of sulforaphane and vitamin C in broccoli florets. The first variant of nutrition was a control one - without application of fertilizers. The second one was fertilized at nitrogen level 200 kg.ha-1. The third one had level of nutriments N : S = 200 : 50 kg.ha-1 and fourth one N : S = 200 : 60 kg.ha-1. In each variant of nutrition, the yield of broccoli was significantly increased in comparison with the control variant. The highest yield of broccoli florets was reached in variant 4 (27.87 t.ha-1). The highest amount of sulforaphane was also determined in variant 4 - 50.93 mg.kg-1 of fresh matter. However, this value did not represent significant increase of sulforaphane content compared to the control variant. The highest content of vitamin C was determined in variant 2 (585.78 mg.kg-1 of fresh matter). In this variant, we achieved significant increase of vitamin C content in comparison with the control variant. Thus, by application of nitrogen and sulphur nutrition, we reached significant increase of broccoli yield compared to the control variant. At the same time, the applied nutrition assisted to enhanced accumulation of sulforaphane and vitamin C in broccoli florets
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.