Field Crop 2018, Vol.1, No.3, 9-14
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5 ml/lit of water and leaf blast severity in
T. viride
treatment and non-treatment was found 1.879% and 3.547%
respectively i.e. leaf blast was 52.97% more severe in non-treatment than that of treated one (Table 5).
Table 5 Severity of leaf blast treated with
Trichoderma viride
under field condition at 80 days to transplanting
S.N.
Factor B
Maximum disease severity
1
0 ml/lit of
T. viride
3.547
a
2
5 ml/lit of
T. viride
1.879
b
Grand mean
2.668
CV (%)
59.071
MS Error
2.4838
LSD (0.05)
1.5117
P value
0.00016***
Note: DAT: Days after transplanting, CV: Coefficient of variation, LSD: Least significant difference, Means followed by the same
letter in a column are not significantly different by DMRT at 0.1% level of significance
2.3 Area under disease progress curve (AUDPC)
The AUDPC value of leaf blast for both factor, variety and
Trichoderma viride
, and their interaction varied
significantly (P<0.001) along with their mean AUDPC. The I, II and mean AUDPC value was least in Sabitri. The
mean AUDPC value was 5.083 and 15.377 for Sabitri and Radha 7 respectively and differed significantly among
Sabitri and Radha 7 (Table 6).
Table 6 AUDPC value of leaf blast on rice variety under field condition at Pyuthan
S.N.
Factor A
AUDPC I
AUDPC II
Mean AUDPC
1
Radha 7
10.431
a
20.323
a
15.377
a
2
Sabitri
2.683
b
7.485
b
5.083
b
Grand mean
6.557
13.904
10.23
CV (%)
78.049
49.45
57.07
MS Error
26.19
47.273
34.085
LSD (0.05)
4.9087
6.5949
5.5999
P value
1.70E-06***
3.50E-08***
1.00E-08***
Note: DAT: Days after transplanting, CV: Coefficient of variation, LSD: Least significant difference, Means followed by the same
letter in a column are not significantly different by DMRT at 0.1% level of significance
The I, II and mean AUDPC value was found significant among the
T. viride
treatment and non-treatment.
T. viride
was found efficient in reducing the AUDPC value for leaf blast disease. The AUDPC value was 6.104 and 14.356
in treated and untreated cases respectively (Table 7).
Table 7 AUDPC value of leaf blast treated with
Trichoderma viride
under field condition
S.N.
Factor B
AUDPC I
AUDPC II
Mean AUDPC
1
0 ml/lit of
T. viride
9.855
a
18.861
a
14.356
a
2
5 ml/lit of
T. viride
3.259
b
8.947
b
6.104
b
Grand mean
6.557
13.904
10.23
CV (%)
86.396
60.616
67.449
MS Error
32.092
71.033
47.611
LSD (0.05)
5.4337
8.0841
6.6184
P value
8.70E-06***
6.00E-07***
1.20E-07***
Note: DAT: Days after transplanting, CV: Coefficient of variation, LSD: Least significant difference, Means followed by the same
letter in a column are not significantly different by DMRT at 0.1% level of significance
