Response of Sorghum (Sorghum bicolor L.) to Residual Phosphate in Soybean-Sorghum and Maize-Sorghum Crop Rotation Schemes on Two Contrasting Nigerian Alfisols

Table 3

Influence of P-sources on heights (cm) of maize and soybean plants (at successive growth periods) in the first cropping.

Treatment	Plants height
	Weeks after planting
	1	2	3	4	5	6
Phosphate fertilizers	Maize plant
Control	11.78	24.17	24.50	34.47	46.35	59.88
Morocco Rock	12.50	26.00	26.33	41.33	59.05	67.83
Sokoto Rock	12.32	22.22	25.42	37.03	48.10	61.20
Single super	12.55	24.47	28.25	42.52	60.75	69.00
LSD (5%)	2.15	2.67	3.55	6.76	7.38	13.55
	Soybean plant
Control	9.67	17.67	19.73	24.72	33.55	34.08
Morocco Rock	9.68	17.22	20.50	25.08	30.38	40.25
Sokoto Rock	9.63	16.83	20.23	23.68	30.78	34.23
Single super	10.13	18.88	22.00	28.43	36.93	42.32
LSD (5%)	1.70	2.57	2.43	4.18	4.84	6.04

LSD = least significant difference (5%).