International Journal of Horticulture 2015, Vol.5, No.3, 1
-
12
3
Crop and variety
Turmeric variety BSR 2 with a duration of 240-245
days was selected for this study and the seeds were
procured from ARS, Bhavanisagar. The characteristic
features of the variety BSR 2 are presented in Table 2.
Table 2 Varietal characteristics of turmeric BSR 2
S.No. Particular
Description
1.
Year of release
1994
2.
Released by
ARS, Bhavanisagar.
3.
Parentage
X-ray irradiated mutant
from Erode local
4.
Duration (days)
240 - 245
5.
Curing percentage
21.00
6.
Average productivity of
rhizomes
25 - 30 (t ha
-1
)
Experimental Methods
Design and layout
The experiments were laid out in Randomized block
design comprised of fifteen treatments. The treatments
were replicated thrice. The lay out plan of the
experimental field during 2012. The experimental
details are furnished below.
Experimental details
Particular
Kharif-
2012
Variety
BSR 2
Spacing
45 cm
15 cm
Gross plot
6.0 m
4.5 m
Net plot
5.7 m
3.6 m
Date of sowing
29.06.2012
Date of harvest
15.03.2013
Treatment details
Treatment
T
1
- PE metribuzin 0.7 kg ha
-1
+ HW on 45 and 75 DAP
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
T
3
- PE metribuzin 0.7 kg ha
-1
+ straw mulch 10 t ha
-1
on 10 DAP + HW on 75 DAP
T
4
- PE pendimethalin 1.0 kg ha
-1
+ HW on 45 and 75 DAP
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
T
6
- PE pendimethalin 1.0 kg ha
-1
+ straw mulch 10 t ha
-1
on 10 DAP + HW on 75 DAP
T
7
- PE atrazine 0.75 kg ha
-1
+ two HW on 45 and 75 DAP
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
T
9
- PE atrazine 0.75 kg ha
-1
+ straw mulch 10 t ha
-1
on 10 DAP + HW on 75 DAP
T
10
- PE oxyfluorfen 0.30 kg ha
-1
+ HW on 45 and 75 DAP
T
11
- PE oxadiargyl 0.25 kg ha
-1
+ HW on 45 and 75 DAP
T
12
- POE glyphosate 1.03 kg ha
-1
on 25 DAP + HW on 45 and 75 DAP
T
13
- POE glyphosate 1.54 kg ha
-1
on 25 DAP + HW on 45 and 75 DAP
T
14
- Hand weeding on 25, 45 and 75 DAP
T
15
- Unweeded check
Note: PE - pre-emergence POE - post-emergence DAP - days after planting HW- hand weeding
Microbial analysis
Population dynamics of different types of
microorganisms was studied from the soil samples of
individual treatment plots at 3, 15, 25, 50 and 75 DAP.
One gram of soil was weighed and transferred to 10
ml sterile water blank and a thorough shaking was
given. This gave the dilution of 10
-1
, from this using a
sterile pipette, one ml of the suspension was
transferred to 9 ml water blank to get a dilutionof 10
-2
.
Subsequent dilution of
10
-3
, 10
-4
, 10
-5
, and 10
-6
were
also made accordingly. The respective media were
melted, cooled and poured into the petri-dishes
carrying the respective dilution and the dishes were
incubated at 30°C. After incubation period, the
colonies were counted and expressed as colony
forming units per gram of soil. Media used for the
estimation of population dynamics of different
microbial communities are furnished below:
Composition of media used
1. Nutrient agar medium (Allen, 1953)
Glucose
:
5.0 g
Peptone
: 5.0 g
Beef extract
:
3.0 g
Sodium chloride
:
5.0 g
Agar
:
15-20 g
Distilled water
:
1000 ml
pH
:
7.0
