Abstract
The edible portions of 5 tropical leafy vegetables, Amaranthus caudatus (A), Cucurbita pepo (C), Telfairia occidentalis (T), Solanum aethiopicum (Sa) and Solanum macrocarpon (Sm), were analysed for their contents of calcium (Ca), phosphorus (P), potassium (K), magnesium (Mg), sodium (Na), zinc (Zn), iron (Fe), manganese (Mn), copper (Cu) and chloride (Cl). The analyses were performed in relation to 4 levels of nitrogen (N) fertilization (0, 100, 150 or 200 kg N/ha) and 4 harvest (H) periods (7, 9, 11 or 13 weeks post-planting). N application had no significant effect on the accumulation of Ca, K, Na, Cu and Zn in all the 5 vegetables and on the P and Mg of T, Sa and Sm. However, it depressed the Fe content of all the vegetables and the Mg content of A and C, but increased the Mn and Cl contents of all the vegetables and the P content of A and C. With increasing age, the P, Na, Zn and Mn contents of the vegetables increased significantly, while Fe and Cu of all the vegetables, the K of A, C and Sm, and P of A and T decreased.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
