Effect of Land Application of Phosphorus-Saturated Gypsum on Soil Phosphorus in a Laboratory Incubation

Table 4

Combined effect of soil type and time averaged across phosphorus (P) saturation level and gypsum rate and combined effect of soil type and gypsum rate averaged across time on soil pH^†.

Soil type	Days after Amendment
	1	7	119
Sandy loam	4.39 d	4.28 e	4.21 f
Silt loam	6.12 b	6.11 c	6.15 a
Unamended sandy loam	4.55	4.44	4.18
Unamended silt loam	6.29	6.27	6.22
	Gypsum Rate (Mg ha^−1)
	5.6	22.4
Sandy Loam	4.15 c	4.44 b
Silt Loam	6.11 a	6.14 a

^†Means followed by different letters were determined to be significantly different at 𝑃<0.05. Means for the unamended soils were not compared statistically to the amended soils.