Application of Response Surface Methodology for Optimization of Urea Grafted Multiwalled Carbon Nanotubes in Enhancing Nitrogen Use Efficiency and Nitrogen Uptake by Paddy Plants

Table 8

Optimization results for design factors of UF-MWCNTs fertilizer.

Factors	Name	Level	Low level	High level
	f-MWCNTs	0.50	0.10	0.50
	Functionalization reflux time	21.00	15.00	21.00

Confidence level = 95%.
is amount of f-MWCNTs.
is functionalization reflux time.