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International Journal of Horticulture. 2015, Vol. 5, No. 2, 1-8
http://ijh.biopublisher.ca
5
Table 5 Effect of integrated weed management practices on plant height (cm) in turmeric-
kharif
, 2012
Treatment
60
DAP
120
DAP
180
DAP
240
DAP
T
1
PE metribuzin 0.7 kg·ha
-1
+ HW on 45 and 75 DAP
44.7
119.0
132.0 129.1
T
2
PE metribuzin 0.7 kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4 g·ha
-1
(Tank mix)
on 45 DAP
34.4
85.8
97.3
93.6
T
3
PE metribuzin 0.7 kg·ha
-1
+ straw mulch 10 t·ha
-1
on 10 DAP + HW on 75 DAP
37.2
102.1
115.0 112.3
T
4
PE pendimethalin 1.0 kg·ha
-1
+ HW on 45 and 75 DAP
42.2
112.5
123.9 121.0
T
5
PE pendimethalin 1.0 kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4 g·ha
-1
(Tank
mix) on 45 DAP
32.3
84.7
95.3
93.3
T
6
PE pendimethalin 1.0 kg·ha
-1
+ straw mulch 10 t·ha
-1
on 10 DAP + HW on 75 DAP
34.6
99.3
112.0 106.2
T
7
PE atrazine 0.75 kg·ha
-1
+ HW on 45 and 75 DAP
37.2
103.3
115.1 112.4
T
8
PE atrazine 0.75 kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4 g·ha
-1
(Tank mix)
on 45 DAP
32.2
83.7
95.0
92.6
T
9
PE atrazine 0.75 kg·ha
-1
+ straw mulch 10 t·ha
-1
on 10 DAP + HW on 75 DAP
33.9
94.9
108.4 103.2
T
10
PE oxyfluorfen 0.30 kg·ha
-1
+ HW on 45 and 75 DAP
40.2
105.8
121.6 117.2
T
11
PE oxadiargyl 0.25 kg·ha
-1
+ HW on 45 and 75 DAP
36.3
100.5
107.5 105.7
T
12
POE glyphosate 1.03 kg·ha
-1
on 25 DAP + HW on 45 and 75 DAP
38.4
99.3
110.7 108.8
T
13
POE glyphosate 1.54 kg·ha
-1
on 25 DAP + HW on 45 and 75 DAP
31.5
95.9
100.4
95.6
T
14
HW on 25, 45 and 75 DAP
41.7
108.4
122.0 112.0
T
15
Unweeded check
29.1
82.8
93.5
92.5
SEd
2.7
5.5
7.0
7.0
CD (P=0.05)
5.6
11.3
14.4
14.2
at critical crop-weed competition of up to150 DAP in
turmeric might be the reason for better growth of turmeric.
2.2 Dry Matter Production
Dry matter production was significantly influenced by
different weed control treatments and is presented in
Table 6. There was a steady increase in DMP from 60
DAP to 240 DAP.
During
kharif
2012, at 60 DAP, the dry matter
production was lucidly higher (2 387 kg·ha
-1
) in
pre-emergence application of metribuzin 0.7 kg ·ha
-1
+
HW on 45 and 75 DAP which was comparable with
PE pendimethalin 1.0 kg·ha
-1
+ HW on 45 and 75
DAP (2271 kg·ha
-1
) and hand weeding at 25, 45 and
75 DAP (2238 kg·ha
-1
). Unweeded check (T15)
resulted in significantly lower DMP (1 110 kg·ha
-1
)
which was comparable with PE pendimethalin 1.0
kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4
g·ha
-1
(Tank mix) on 45 DAP (1 207 kg·ha
-1
) and PE
atrazine 0.75 kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+
metsulfuron 4 g·ha
-1
(Tank mix) on 45 DAP (1 242
kg·ha
-1
). At 120 DAP, the lower dry matter production
was recorded with unweeded check (1 868 kg·ha
-1
),
which was comparable with PE atrazine 0.75 kg·ha
-1
+
POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4 g·ha
-1
(Tank mix) on 45 DAP (2119 kg·ha
-1
). Pre-emergence
application of metribuzin 0.7 kg·ha
-1
+ HW on 45 and
75 DAP (T1) registered distinctly higher (5167 kg·ha
-1
)
DMP, but it was comparable with pre-emergence
application of pendimethalin 1.0 kg·ha
-1
+ HW on 45
and 75 DAP (4906 kg·ha
-1
). At 180 and 240 DAP, the
same trend was observed. The dry matter production
was drastically reduced in PE atrazine 0.75 kg·ha
-1
+
POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4 g·ha
-1
(Tank mix) on 45 DAP (T8), PE pendimethalin 1.0
kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+ metsulfuron 4
g·ha
-1
(Tank mix) on 45 DAP (T5) and PE metribuzin
0.7 kg·ha
-1
+ POE fenoxaprop 67 g·ha
-1
+ metsulfuron
4 g·ha
-1
(Tank mix) on 45 DAP (T2) besides
unweeded check at 180 and 240 DAP. Pre-emergence
application of metribuzin 0.7 kg·ha
-1
+ HW on 45 and
75 DAP resulted in conspicuously higher DMP at 180
and 240 DAP (9561 and 11518 kg·ha
-1
, respectively)