Table 13.

Postharvest soil AB-DTPA ext. K (mg kg⁻¹) as influenced by maize and wheat supplied with 144 mM KH₂PO₄ foliar solution at given soil-applied P levels in calcareous soils.

Foliar P	Method	P Levels (kg ha−1)				Mean
		0	20	40	60
Year I
0	BC	89	96	105	134	105.8
0	BD	99	109	120	132	114.9
144 mM	BC	111	127	134	138	127.3
144 mM	BD	122	135	140	143	134.8
Year II
0	BC	92	106	110	140	111.8
0	BD	105	113	117	138	118.1
144 mM	BC	110	131	141	149	132.5
144 mM	BD	124	140	145	153	140.3
Average Across Methods
No Foliar spray	-	96	106	113	136	113 b
Foliar P	-	117	133	140	146	134 a
-	BC	100	115	122	140	119 b
-	BD	112	124	130	141	127 a
Year I	-	105	117	124	137	121
Year II	-	108	122	128	145	126
Mean		106 d	120 c	126 b	141 a

BC and BD indicate broadcast application and band application, respectively. Means with different letters in each column are significantly different (p = 0.05).