International Journal of Horticulture 2016, Vol.6, No.1, 1
-
7
4
T
able 3 Effect of time of introducing cowpea into pineapple-pepper intercrops on d-leaf area of pineapple (cm
2
)
Treatments
Weeks after planting
12
16
20
24
28
32
36
40
2011 rainy season crop
Cowpea sown @ 0WAT
65.66a
68.97a
72.06a
75.50a
80.56a
84.55c
88.89b
90.18c
Cowpea sown @ 3WAT
85.33a
88.36a
92.47a
95.42a
97.25a
103.97bc
107.70ab
109.67b
c
Cowpea sown @ 6WAT
80.42a
83.27a
90.03a
97.09a
104.05a
109.90abc
119.04ab
127.69b
c
Cowpea sown @ 9WAT
91.15a
92.58a
98.02a
103.16a
104.85a
111.72ab
120.25a
123.64a
b
Sole pineapple
87.52a
89.28a
94.68a
97.01a
108.19a
131.53a
138.08a
142.87a
2011 late season crop
Cowpea sown @ 0WAT
51.91a
66.49a
73.42a
74.56a
77.54a
80.60a
84.72a
91.59a
Cowpea sown @ 3WAT
50.51a
66.03a
75.34a
78.72a
82.89a
89.56a
98.74a
104.98a
Pineapple-pepper Intercrop
52.73a
60.03a
67.15a
65.64a
68.46a
71.08a
82.10a
87.96a
Sole pineapple
48.43a
66.23a
74.42a
75.57a
76.67a
78.91a
83.66a
86.61a
2012 rainy season crop
Cowpea sown @ 0WAT
59.20a
83.61a
115.46a
131.18a
146.84a
145.93a
147.61a
153.41a
Cowpea sown @ 3WAT
82.58a
98.47a
122.28a
144.61a
160.10a
167.95a
175.13a
178.29a
Cowpea sown @ 6WAT
65.34a
94.70a
132.17a
170.65a
185.29a
194.55a
199.24a
202.03a
Cowpea sown @ 9WAT
76.24a
101.16a
132.85a
159.75a
172.32a
179.47a
181.16a
195.27a
Pineapple-pepper Intercrop
76.51a
100.44a
127.67a
151.12a
161.60a
164.71a
17013a
182.46a
Sole pineapple
77.24a
117.53a
49.12a
179.48a
187.59a
193.99a
199.28a
206.91a
2012 late season crop
Cowpea sown @ 0WAT
45.03a
55.41a
61.44a
64.69a
67.84a
73.40a
96.70a
159.66a
Cowpea sown @ 3WAT
46.68a
74.31a
88.71a
94.35a
101.95a
120.86a
160.06a
212.30a
Pineapple-pepper Intercrop
46.95a
69.45a
85.58a
92.55a
98.99a
108.35a
167.92a
228.75a
Sole pineapple
46.27a
69.83a
88.74a
95.55a
102.74a
110.97a
188.18a
223.58a
Means with the same letter(s) within column and season are not significantly different (P>0.05)
sowing cowpea at the time of transplanting pepper
into pineapple in the rainy season planting in 2011
prolonged the number of days to 50% flowering by 28
days. When cowpea was sown at the time of
transplanting pepper into pineapple in the rainy season
of 2012, the number of days to 50% flowering was
shorter. The time of sowing cowpea into
pineapple-pepper intercrops did not significantly
influence the number of days to 50 % flowering for
the late season experiments of 2011 and 2012.
The girth of pineapple fruits was not significantly
influenced by the date of sowing cowpea into
pineapple-pepper intercrops except when cowpea was
sown at the time of transplanting pepper into
pineapple in the rainy season of 2012. The weight of
pineapple fruit (fruit without crown) was significantly
influenced by the time of sowing cowpea into
pineapple-pepper intercrop in the rainy-season
planting of 2011 when the weight of pineapple fruit
was significantly reduced when cowpea was sown at
the time of transplanting pepper into pineapple (Table
5). Delayed sowing of cowpea into pineapple-pepper
intercrop by 3 to 9 weeks resulted in up to 280%
increase in weight of pineapple fruit. However, the
weight of pineapple fruits was not significantly
decreased with early sowing of cowpea into
pineapple-pepper intercrop in rainy season of 2012.
The weight of pineapple fruit reduced significantly
when cowpea was sown at the time of transplanting
pepper into pineapple in the late season of 2012. The
weight of whole fruit of pineapple was significantly
