Plantain-Tree Rubber Intercropping Systems Improved Productivity in the Tropical Humid Zone of Ghana, West Africa

Table 4

Stem girth and height of plantain at Ellembelle and Jomoro sites.

Treatment	Girth (cm) Ellembelle
	4 MAP		5 MAP	6 MAP		7 MAP		8 MAP	9 MAP		11 MAP
P	32.04		33.61	43.00		49.56		49.70	51.84		55.27
PR	22.29		28.39	34.39		39.55		42.28	43.44		48.34
PPR	25.54		31.72	36.50		41.99		44.47	45.68		49.98
PPPR	27.61		33.61	39.28		43.90		46.34	48.87		54.03
SED (5%)	1.79		1.41	0.83		0.80		NS	NS		NS
CV (%)	8.20		5.20	2.60		2.20		2.80	2.00		3.10
Treatment	Girth (cm) Jomoro
	4 MAP	5 MAP	6 MAP	7 MAP	8 MAP	9 MAP	10 MAP	11 MAP	12 MAP	13 MAP	15 MAP
P	12.30	19.77	23.63	25.57	27.95	32.40	35.54	38.59	41.96	45.34	54.88
PR	14.28	21.22	25.12	28.73	32.85	35.50	38.42	41.10	44.40	47.39	55.67
PPR	16.32	22.57	28.94	31.89	36.40	39.34	43.48	44.64	47.43	50.72	61.33
PPPR	17.72	25.58	32.05	36.08	39.66	41.88	45.08	47.71	50.16	52.41	64.33
SED (5%)	0.50	0.59	0.21	0.31	0.65	0.47	0.78	0.28	0.45	0.41	0.47
CV (%)	4.10	3.20	1.00	1.20	2.30	1.50	2.40	0.80	1.20	1.00	1.00
Treatment	Height (cm) Ellembelle
	4 MAP		5 MAP	6 MAP		7 MAP		8 MAP	9 MAP		11 MAP
P	73.60		82.20	93.60		113.10		122.20	132.40		167.70
PR	83.00		95.30	110.10		134.10		143.40	157.40		194.60
PPR	91.70		102.80	119.50		140.10		132.50	170.90		209.60
PPPR	97.20		119.50	126.80		134.10		172.20	194.30		238.10
SED (5%)	NS		8.31	9.30		NS		12.64	12.12		8.41
CV (%)	13.20		10.20	8.52		10.60		10.90	9.10		5.10
Treatment	Height (cm) Jomoro
	4 MAP	5 MAP	6 MAP	7 MAP	8 MAP	9 MAP	10 MAP	11 MAP	12 MAP	13 MAP	15 MAP
P	39.31	64.58	74.28	87.22	97.26	106.91	115.83	137.02	172.10	206.00	219.33
PR	45.45	75.02	82.93	100.10	108.67	121.86	126.67	156.84	188.80	226.20	235.17
PPR	51.78	81.06	100.67	112.22	124.52	130.78	143.27	167.95	203.10	233.50	243.50
PPPR	59.28	92.83	113.79	121.01	128.52	139.61	149.17	181.36	214.40	236.80	254.89
SED (5%)	1.52	0.64	2.63	1.14	1.94	2.05	1.70	2.52	3.12	5.05	2.04
CV (%)	3.80	1.00	3.50	1.30	2.10	2.00	1.60	1.70	2.00	2.70	1.00

MAP = months after planting; P = sole plantain; R = sole rubber; PR = low-density plantain; PPR = medium-density plantain; PPPR = high-density plantain; SED = standard error of the difference; CV = coefficient of variation.