Multifunctional Superabsorbent Polymer under Residue Incorporation Increased Maize Productivity through Improving Sandy Soil Properties

Table 3

Effects of multifunctional SAP doses on soil physicochemical characteristics in 0–0.40 m layer.

Treatment	Soil bulk density; (g cm^-3)	Total porosity; (%)	Soil organic matter; (g kg^-1)	Soil available; (mg kg^-1)	Soil available; (mg kg^-1)		Soil available; (mg kg^-1)
Before treating	a	c	a	a	ab		a
SAP0	ab	bc	c	b	cd		c
SAP30	b	b	bc	b	ab		ab
SAP60	c	a	a	a	a		a
SAP90	c	a	a	ab	bc		a
SAP120	c	a	bc	b	c		a

; ; ; ; and . Values followed by the same lowercase letter in the same column are not significant according to the least significant different test (LSD 0.05).