Due to an increasing demand of leaf vegetables, and hence their economic importance in the tropics, it is very common that excessive fertilizer N rates are applied to vegetable gardens and fields to attain high yield. This calls for more information on their nutrient requirements. In this study, we designed experiments to explore the effect of organic N levels on the yield and agronomic N use e...

Abstract. Betalains are natural pigments responsible for the colour of flowers, bracts, stems, and leaves genus Amaranthus, they bioactive compounds. Due to their great chemical diversity, determination confident identification betalains still challenges interest as colourants health benefit. By high-performance liquid chromatography (LC) coupled tandem mass spectrometry (MS), catalog in red am...

Nickel (Ni) is a heavy metal and soil pollutant but existence of small amount of it as a metallic part of urease enzyme in the plants is necessary. Remediation of spots contaminated with heavy metals is particularly challenging. Phytoremediation, the use of plants for environmental restoration, is a novel clean up technology. In this study, five levels of nickel [control (Ni0), Ni125, Ni250, Ni...