Improving potassium use efficiency of sugarcane through the use of polyhalite

Table 1 Treatments used as a multi-nutrient source of K in an acidic sandy Entisol for sugarcane development in a pot trial

^aPYH Polyhalite, KCl Chloride of potassium, GYP phosphogypsum, KIE kieserite, ${\text{KCl}} + {\text{GYP}} + {\text{KIE }} = {\text{ KGK}}; \, \raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower.25ex\hbox{$\scriptstyle 2$} {\text{KCl }} + \, \raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower.25ex\hbox{$\scriptstyle 2$} {\text{PHY }} = \, \raise.5ex\hbox{$\scriptstyle 1$}\kern-.1em/ \kern-.15em\lower.25ex\hbox{$\scriptstyle 2$} {\text{KP}}$
^bCa, Mg and S in KCl treatments are applied by means of kieserite and phosphogypsum.

ISSN: 2662-4044