Nitrate, Ascorbic Acid, Mineral and Antioxidant Activities of Cosmos caudatus in Response to Organic and Mineral-Based Fertilizer Rates

Molecules

Siti Aishah Hassan¹  Salumiah Mijin¹  Umi Kalsom Yusoff¹  Phebe Ding¹ 

[1]¹Department of Crop Science, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia[2] height:6px

[3]"> ²Department of Biology, Universiti Putra Malaysia, Serdang Selangor 43400, Malaysia

关键词: fertilizer source;    ascorbic acid;    antioxidants;    nitrate content;   

DOI  :  10.3390/molecules17077843

来源: mdpi

【 摘 要 】

The source and quantity of nutrients available to plants can affect the quality of leafy herbs. A study was conducted to compare quality of Cosmos caudatus in response to rates of organic and mineral-based fertilizers. Organic based fertilizer GOBI (8% N:8% P₂O₅:8% K₂O) and inorganic fertilizer (15% N, 15% P₂O₅, 15% K₂O) were evaluated based on N element rates at 0, 30, 60, 90, 120 kg h⁻¹. Application of organic based fertilizer reduced nitrate, improved vitamin C, antioxidant activity as well as nitrogen and calcium nutrients content. Antioxidant activity and chlorophyll content were significantly higher with increased fertilizer application. Fertilization appeared to enhance vitamin C content, however for the maximum ascorbic acid content, regardless of fertilizer sources, plants did not require high amounts of fertilizer.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.