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Effect of nitrogen levels on yield and quality of leafy vegetables grown in a non-circulating hydroponic system.

M. Tech. Agriculture / Leafy vegetables, Swiss chard (Beta vulgaris L. var. cicla), lettuce (Lactuca sativa L.) and mustard spinach (Brassica juncea), are widely grown in South Africa. These leafy vegetables are popular owing to their availability and nutritional properties. Optimisation of crop nutrition is essential to maximize yield and quality of vegetables. Therefore, a study was conducted to evaluate the effect of different levels of nitrogen application on growth and quality parameters of leafy vegetables when grown in a non-circulating hydroponic system. The objective of this study is two-fold: primarily, to determine the influence of nitrogen on growth, yield and overall quality of Swiss chard, lettuce and mustard spinach grown in a non-circulating hydroponic system, and secondly, to determine the effect of nitrogen applications on bioactive compounds and antioxidants, such as antioxidant scavenging activities, ascorbic acid, total phenolics and flavonoids.

Identiferoai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:tut/oai:encore.tut.ac.za:d1001871
Date January 2014
CreatorsMahlangu, Rebecca Irene Sindisiwe.
Source SetsSouth African National ETD Portal
LanguageEnglish
Detected LanguageEnglish
TypeText
FormatPDF

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