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Journal of Plant Nutrition Volume 37, 2014 - Issue 14
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Original Articles

Effects of Nitrogen and Calcium Nutrition Withdrawal Before Harvesting on Biomass and Nutritive and Safety Quality in Spinach (Spinacia Oleracea L.)

Yan LiInstitute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences, Jinan, China;Key Laboratory of Agro-Environment in Huang-Huai-Hai Plain, Ministry of Agriculture, Jinan, China;Shandong Provincial Key laboratory of Agricultural Non-point Source Pollution Control, Jinan, ChinaView further author information
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Zhang YingpengInstitute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences, Jinan, China;Key Laboratory of Agro-Environment in Huang-Huai-Hai Plain, Ministry of Agriculture, Jinan, China;Shandong Provincial Key laboratory of Agricultural Non-point Source Pollution Control, Jinan, ChinaView further author information
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Liu ZhaohuiInstitute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences, Jinan, China;Key Laboratory of Agro-Environment in Huang-Huai-Hai Plain, Ministry of Agriculture, Jinan, China;Shandong Provincial Key Laboratory of Plant Nutrition and Fertilizer, Jinan, ChinaCorrespondence[email protected]
View further author information
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Zhong ZiwenInstitute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences, Jinan, China;Shandong Provincial Key laboratory of Agricultural Non-point Source Pollution Control, Jinan, ChinaView further author information
&
Sun MingInstitute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences, Jinan, China;Shandong Provincial Key laboratory of Agricultural Non-point Source Pollution Control, Jinan, ChinaView further author information
Pages 2270-2280 | Received 18 Feb 2011, Accepted 11 Feb 2013, Published online: 30 Aug 2014
 
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Abstract

A hydroponic culture was used to study different nitrogen and calcium supply patterns on biomass, nutritive, and safety quality of spinach seven days before harvesting. The results showed that the complete or partial withdrawal of nitrogen (N) and calcium (Ca) nutrient decreased spinach biomass compared to control (CK). At the same time, the withdrawal of N and Ca supply before harvesting increased vitamin C contents and decreased nitrate and oxalate content in edible parts of spinach. The decrease in spinach biomass could be partially compensated by the increase of the nutritive and safety quality of spinach and the reduced use of N and Ca nutrients.

Additional information

Funding

This work was financially supported by the Natural Science Foundation of Shandong Province (Y2007D62).

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