Rice Genomics and Genetics 2015, Vol.6, No.3, 1-5
4
Table 5 Interaction between locations and treatments of
Stylosanthes guianensis
plants height, biomass and canopy
Sites
Treatments
Height (cm) at
PI of rice
Height (cm) at
harvest of rice
Dryness biomass (kg/ha)
at PI of rice
Dryness biomass (kg/ha)
at harvest of rice
S-Canopy
HK
Rice Stylo-B
47
82 b
27
1,635
90
Rice Stylo-L
55
98 a
66
3,486
117
SL
Rice Stylo-B
25
51 c
22
673
101
Rice Stylo-L
30
56 c
106
3,262
118
SE(N= 3)
5
1
21
528
8
D.F.
4
3
4
4
4
5%LSD
18
6
81
2070
32
Table 6 Effected of treatments of
Stylosanthes guianensis
plants height, biomass and canopy
TRT$
Height (cm) at
PI of rice
Height (cm) at
harvest of rice
Dryness biomass (kg/ha) at PI
of rice
Dryness biomass (kg/ha)
at harvest of rice
S-Canopy
Rice Stylo-B
36
67 b
25 b
1,154 b
95
b
Rice Stylo-L
43
77 a
86 a
3,374 a
118
a
SE(N= 6)
3
1
15
373
6
D.F.
4
3
4
4
4
5%LSD
13
4
57
1463
23
also significant difference from broadcasting sown
(Figure 5). Highest biomass accumulation was
observed at the time that the intercropped rice reached
panicle initiation.
Figure 5 Relationship between height and dryness biomass of
stylosanthes
There was highly significant difference competition
effect of either
stylosanthes
sown in line after rice
sowing on upland rice yield components and grain
yield rice when they were seeded into rice stands at
four weeks after rice sowing (1,075 kg/ha better
than rice alone). This study were difference
supported the findings of (Shelton and Humphreys,
1972, Shelton and Humphreys, 1975) found that
broadcasting
stylosanthes
at 10, 31 or 60 days after
sowing had no effect on rice yields in central Laos
and northeast Thailand.
Rice with a
stylosanthes
intercrop performed better
than rice alone, perhaps because
stylosanthes
leaf
litter fall and die-off of root turnover improved soil
fertility enough for rice growing in the vicinity of the
stylosanthes
plants to grow and develop better, and
manifest this in improved grain yield.
There were trade-offs in the rice-
stylosanthes
intercropping system. When grown close together as
in the rice+broadcast sown
stylosanthes
treatment,
strong competition for light, soil moisture and soil
mineral nutrients ensue. Competitive interactions
outstrip benefits that
stylosanthes
may bestow on rice.
Growing the crops in separ-ate rows minimize
inter-specific competition and improved the grain
yield of rice and biomass accumulation of
stylosanthes
per unit area.
2 Conclusions
Stylosanthes
line sown after four weeks of rice sowing
had highly effect on upland rice yield as 1.9 time or
1,075 kg/ha better than rice alone. But the
broadcasting of
stylosanthes
establishment had no
difference with rice alone. There was also optimum
plants dryness biomass or accumulation during rice
growth performance of
stylosanthes
by line sowing by
three times or 2,221 kg/ha better than broadcasting.
Further it needs to evaluate the effect of relay-seeding
stylosanthes
residuals either as short-term or
