EFFECT OF SOWING TIME AND ESTABLISHMENT METHODS ON PEST COMPLEX OF RICE VARIETIES (Accession No. T06879)
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Date
2020-11
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli Dist- Ratnagiri
Abstract
The field experiment on ‘Effect of sowing time and establishment methods on
pest complex of rice varieties’ was conducted during Kharif season of 2018-2019 and
2019-2020 at Agronomy farm, College of Agriculture, Dapoli.
During 2018-2019 and 2019-2020, the lowest per cent infestation by yellow stem
borer was recorded in S1 (23rd SMW, 4th to 10th June) 0.38 and 0.25, respectively. The
overall mean data during both years revealed that per cent infestation of S. incertulas was
lowest (0.32) in S1.
During 2018-2019, the minimum per cent infestation 0.38 was recorded in
Karjat-3 (V6) which was at par with Swarna (V7) 0.45 and Sahyadri-4 (V8) 0.52. During
2019-2020 the minimum (0.40) per cent infestation by yellow stem borer was recorded
in V8 which was at par with V7 with 0.42 and V6 with 0.48. The overall mean data during
both years revealed that the lowest per cent infestation (0.43) was recorded in V6
followed by V7 with 0.44 and V8 with 0.46 which was at par with each other.
The data during 2018-2019 revealed that the per cent infestation by yellow stem
borer was minimum (0.14) in S1V6 (23rd SMW X Karjat-3) which was at par with S1V7
(23rd SMW X Swarna), S1V8 (23rd SMW X Sahyadri-4) and S1V2 (23rd SMW X Karjat-7)
with 0.17, 0.24 and 0.35 per cent infestation by yellow stem borer, respectively. During
2019-2020 the per cent infestation by yellow stem borer was minimum (0.07) in S1V8
which was at par with S1V7, S1V6 with 0.11 and 0.19, respectively. The overall mean
data on per cent infestation in different sowing date and varieties of S. incertulas during both years revealed that the lowest per cent infestation (0.07) was recorded in S1V8
which was at par with S1V7, S1V5 (23rd SMW X Palghar-1) and S1V6 with 0.11, 0.18 and
0.19, respectively.
During 2018-2019 and 2019-2020, the lowest per cent infestation by leaf folder
was recorded in S1 0.34 and 0.55, respectively.The overall mean data on per cent
infestation of leaf folder during both years revealed that the lowest per cent infestation
by leaf folder (0.44) was recorded in S1.
During 2018-2019, the data revealed that the per cent infestation of C. medinalis
in different varieties was minimum (0.60) in V6 which was at par with V8, V5
(Palghar-1), V4, V1, V7, V2 (Karjat-7) and V3 with 0.61, 0.66, 0.70, 0.72, 0.76, 0.84 and
0.86, respectively. During 2019-2020 the minimum (0.60) per cent infestation by leaf
folder was recorded in V6 which was at par with V8, V4, V5, V1 and V3 0.70, 0.81, 0.91,
0.94 and 0.94, respectively. The mean data on per cent infestation of C. medinalis during
2018-2019 and 2019-2020 revealed that the lowest per cent infestation (0.60) was
recorded in V6 which was at par with V8, V4, V5, V1, V3 and V2 0.66, 0.76, 0.80, 0.82,
0.90 and 0.92, respectively.
During 2018-2019, the per cent infestation by leaf folder was recorded minimum
(0.06) in S1V6 which was at par with S1V8, S1V1 (23rd SMW X Karjat-5), S1V5, S1V3
(23rd SMW X Ratnagiri-24) and S1V2 with 0.16, 0.40, 0.44, 0.48 and 0.53, respectively.
During 2019-2020 the minimum (0.26) per cent infestation by leaf folder was recorded
in S1V6 which was at par with S1V8 and S1V1 with 0.41 and 0.49, respectively. The data
pertaining to overall mean per cent infestation of leaf folder during both years revealed
that in different combinations of sowing time and varieties the lowest (0.16) was
recorded in S1V6 which was at par with S1V1 (0.33).
During 2018-2019 and 2019-2020, the per cent infestation of blue beetle in
sowing time S3 recorded lowest in S1 5.47 and 5.07, respectively. The data on pooled
mean per cent infestation of L. pygmaea in different sowing time during 2018-2019 and
2019-2020 revealed that the lowest (5.27) was recorded in S1.
The data during 2018-2019 and 2019-2020, revealed that the per cent infestation
of blue beetle in different varieties was minimum in (V6) 7.26 and 7.16, respectively
which was at par with (V8) 8.43 and 8.07, respectively. The pooled data on per cent
infestation of L. pygmaea during both years revealed that the lowest (7.21) was recorded
in V6 (Karjat-3) which was at par with V8 with 8.25.During 2018-2019, the per cent infestation by blue beetle was recorded minimum
(3.39) in S1V8 which was at par with S1V6 and S1V2 with 3.81 and 4.06, respectively.
The data on mean per cent infestation by blue beetle during 2019-2020 was minimum
(3.12) which was at par with S1V6 and S1V2 with 3.57 and 3.85, respectively. The pooled
mean data on per cent infestation of L. pygmaea during both years revealed that in
different sowing time and varieties the lowest (3.25) was recorded in S1V8 which was at
par with S1V6 and S1V2 with 3.69 and 3.95, respectively.
The average grain yield during Kharif 2018-2019 and 2019-2020 revealed that
the rice crop sown on 23rd SMW recorded significantly higher grain yield (4597.00 kg
ha-1
) over delayed sowing 24th SMW (4220.41 kg ha-1
) and 25th SMW (3695.35 kg ha-1
),
while rice crop sown on 24th SMW recorded significantly higher grain yield (4220.41 kg
ha-1
) over delayed 25th SMW (3695.35 kg ha-1
).
The data of grain yield of different varieties during Kharif 2018-2019 and 2019-
2020 revealed that the rice variety Sahyadri-4 recorded the significantly higher grain
yield (4639.12 kg ha-1
) and was at par with Karjat – 3 (4497.01 kg ha-1
), Swarna
(4338.33 kg ha-1
), Palghar-1 (4300.66 kg ha-1
) and Jaya (4268.7 kg ha-1
).
The data of interaction effect between sowing time and rice varieties during both
years indicated that Karjat-3 sown on 23rd SMW recorded highest grain yield (5613.83
kg ha-1
) which was at par with Sahyadri-4 (5026.01 kg ha-1
) and Swarna (4908.09 kg
ha-1
) sown on 23rd SMW.
The correlation between yellow stem borer infesting rice at different sowing time
and different meteorological parameters during 2018-2019 revealed that, the weather
parameter rainfall (r = 0.908) was found to be positively significant with yellow stem
borer infestation in S1. Remaining all of the weather parameters were found to be non significant. During 2018-2019 the correlation between yellow stem borer infesting rice at
different varieties and different meteorological parameters revealed that, the weather
parameter rainfall was found to be positively significant in V1 (r=0.662), V2 (r=0.626),
V3 (r=0.730), V4 (r=0.622), V5 (r=0.745), V6 (r=0.603) and V9 (r=0.662). While,
maximum temperature had found to be negatively significant in V3 (r=-0.633) and V5
(r=-0.608). Remaining all of the weather parameters were found to be non-significant.
The correlation between yellow stem borer infesting rice at combine effect of different
sowing time and varieties with different meteorological parameters, rainfall in S1V1
(r=0.894), S1V2 (r=0.840), S1V3(r=0.889), S1V4 (r=0.926), S1V5 (r=0.898), S1V6 (r=0.867), S1V7 (r=0.888), S1V8(r=0.819),S1V9 (r=0.885) S2V5 (r=0.661) and morning
relative humidity in S1V6 (r=0.629), S1V7 (r=0.621) and S1V8 (r=0.611) were found to be
positively significant. While, maximum temperature was found to be negatively
significant in S1V1 (r=-0.605), S1V3 (r=-0.604), S1V4 (r=-0.631), S1V9 (r=-0.631) and
S2V5(r=-0.605). Remaining all of the weather parameters were found to be non significant.
The data on correlation between yellow stem borer infesting rice at different
sowing time, varieties, combine effect and different meteorological parameters during
2019-2020 revealed that, all the weather parameters were found to be non-significant.
The data during 2018-2019 and 2019-2020 on correlation between yellow stem
borer infesting rice at combine effect of different sowing time and varieties with
meteorological parameters, morning relative humidity in S1V1 (r=0.723), S1V2 (r=0.636),
S1V3(r=0.880), S1V5 (r=0.674) and evening relative humidity in S1V3 (r=0.646), S1V5
(r=0.620) and S1V6 (r=0.626) was found to be positively significant. While, maximum
temperature in S1V3 (r=-0.708), S1V4 (r=-0.704), S1V5 (r=-0.760), S1V6 (r=-0.786), S1V7
(r=-0.721), S1V8 (r=-0.721), S1V9 (r=-0.617) and bright sunshine hours S1V2 (r=-0.606)
and S1V3 (r=-0.747) was found to be negatively significant. Remaining all of the weather
parameters were found to be non-significant.
The data on correlation between leaf folder infesting rice at different sowing time
and different meteorological parameters during 2018-2019 revealed that, maximum
temperature (r = -0.652) was found to be negatively significant in S3. Remaining all of
the weather parameters were found to be non-significant. The data on correlation
between leaf folder infesting rice at different varieties and different meteorological
parameters revealed that, minimum temperature in V7 (r=0.636) and evening relative
humidity (r=0.615) were found positively significant. While, maximum temperature and
bright sunshine hours had found to be negatively significant in V7 (r=-0.591) and V7
(r=-0.613). Remaining all of the weather parameters were found to be non-significant.
The correlation between leaf folder infesting rice at combine effect of different sowing
time and varieties with different meteorological parameters, minimum temperature in
S2V7 (r=0.577) was found to be positively significant. While, maximum temperature in
S3V1 (r=-0.590), S3V5 (r=-0.622), S3V7 (r=-0.662) and bright sunshine hours in S2V3
(r=-0.580), S3V5 (r= - 0.577) was found to be negatively significant. Remaining all of the
weather parameters were found to be non-significant.The data on correlation between leaf folder infesting rice at different sowing
time, varieties, combine effect of different sowing time and varieties and different
meteorological parameters during 2019-2020 revealed that, all the weather parameters
were found to be non-significant.
The data on correlation between leaf folder infesting rice at different sowing time
and different meteorological parameters during 2018-2019 and 2019-2020 revealed that,
weather parameter, morning relative humidity in S2 (r=0.614) was found to be positively
significant. While, maximum temperature in S2 (r=-0.719), S2 (r=-0.691) and bright
sunshine hours S2 (r=-0.656) was found to be negatively significant. Remaining all of the
weather parameters were found to be non-significant.
During 2018-2019 and 2019-2020 the data on correlation between leaf folder
infesting rice at different varieties and different meteorological parameters revealed that,
morning relative humidity was found to be positively significant in V2 (r=0.607), V4
(r=0.635), V5 (r=0.606), V7 (r=0.613) and V9 (r=0.665). While, maximum temperature
in V1 (r=-0.610), V2 (r=-0.599), V4 (r=-0.632), V5 (r=-0.622), V6 (r=-0.583), V7
(r=-0.633), V8 (r=-0.638) and V9 (r=-0.624) and bright sunshine hours V4 (r=-0.578) was
found to be negatively significant. Remaining all of the weather parameters were found
to be non-significant.
The data during both years on correlation between leaf folder infesting rice at
combine effect of different sowing time and varieties with different meteorological
parameters, morning relative humidity in S1V2 (r=0.576), S1V4 (r=0.625), S1V5 (r=0.617),
S1V7 (r=0.618), S1V9 (r=0.617), S2V1 (r=0.583), S2V3 (r=0.672), S2V5 (r=0.583), S2V9
(r=0.630), S3V2 (r=0.630), S3V5 (r=0.578), S3V9 (r=0.622), evening relative humidity in
S2V1 (r=0.611) and rainfall in S2V1 (r=0.642) were found to be positively significant.
While, maximum temperature in S1V5 (r=-0.599), S2V1 (r=-0.697), S2V5 (r=-0.634), S2V9
(r=-0.614), S3V1 (r=-0.614), S3V2 (r=-0.629), S3V5 (r=-0.599), S3V8 (r=-0.622), S3V9
(r=-0.647) and bright sunshine hours S2V1 (r=-0.714), S3V8 (r=-0.604) were found to be
negatively significant. Remaining all of the weather parameters were found to be non significant.
The data on correlation between blue beetle infesting rice at different sowing
time and different meteorological parameters during 2018-2019 revealed that, maximum
temperature (r= -0.618) was found to be negatively significant with blue beetle
infestation in S1. Remaining all of the weather parameters were found to be non-significant. The data on correlation between blue beetle infesting rice at different
varieties and different meteorological parameters revealed that, maximum temperature
had found to be negatively significant in V3 (r=-0.586), V5 (r=-0.579) , V6 (r=-0.577) and
V9 (r=-0.600). Remaining all of the weather parameters were found to be non-significant.
The correlation between blue beetle infesting rice at combine effect of different sowing
time and varieties with different meteorological parameters, rainfall in S1V4 (r=0.590),
S1V6 (r=0.587) and S1V9 (r=0.580) was found to be positively significant. While,
maximum temperature in S1V1 (r=-0.591), S1V2 (r=-0.645), S1V3 (r=-0.639), S1V5
(r=-0.628), S1V6 (r=-0.591), S1V7 (r=-0.620), S1V9 (r=-0.580), S2V3 (r=-0.601), S2V5
(r=-0.589), S2V6 (r=-0.616)and bright sunshine hours in S1V5 (r=-0.577), S1V7
(r=-0.618), S1V8 (r=-0.577) was found to be negatively significant. Remaining all of the
weather parameters were found to be non-significant.
During 2019-2020, data on correlation between blue beetle infesting rice at
different sowing time, different varieties, interaction effect and different meteorological
parameters revealed that, all the weather parameters were found to be non-significant.
The data on correlation between blue beetle infesting rice at different sowing
time and different meteorological parameters during 2018-2019 and 2019-2020 revealed
that, morning relative humidity in S1 (r=0.625) was found to be positively significant.
While, maximum temperature in S1 (r=-0.659) was found to be negatively significant.
Remaining all of the weather parameters were found to be non-significant. The
correlation between blue beetle infesting rice at different varieties and different
meteorological parameters revealed that, maximum temperature in V5 (r=-0.628), V6
(r=-0.595), V8 (r=-0.585) and V9 (r=-0.612) was found to be negatively significant.
Remaining all of the weather parameters were found to be non-significant. The
correlation between blue beetle infesting rice at combine effect of different sowing time
and varieties with different meteorological parameters, morning relative humidity in
S1V1 (r=0.702), S1V2 (r=0.661), S1V3 (r=0.739), S1V4 (r=0.684), S1V5 (r=0.746), S1V6
(r=0.762), S1V7 (r=0.705), evening relative humidity in S1V1 (r=0.597), S1V3 (r=0.638),
S1V4 (r=0.572), S1V5 (r=0.612), S1V6 (r=0.638), S1V7 (r=0.605) were found to be
positively significant. While, maximum temperature in S1V1 (r=-0.704), S1V2 (r=-0.622),
S1V3 (r=-0.711), S1V4 (r=-0.650), S1V5 (r=-0.684), S1V6 (r=-0.708), S1V7 (r=-0.677),
S1V8 (r=-0.579), S2V5 (r=-0.618), S2V6 (r=-0.616), S2V8 (r=-0.582) and bright sunshine
hours S1V1 (r=-0.585), S1V2 (r=-0.591), S1V3 (r=-0.670), S1V4 (r=-0.601), S1V5 (r=-0.666), S1V6 (r=-0.687), S1V7 (r=-0.638)were found to be negatively significant.
Remaining all of the weather parameters were found to be non-significant.
The mean data of spider population per hill during 2018-2019 ranged from 0.06
to 0.31. The peak activity 0.31 spiders per hill was recorded in S3 which was at par with
S2 (0.21) whereas the lowest population (0.04) spiders per hill was recorded in S1.
The pooled of two years (Kharif 2018-2019 and 2019-2020) revealed that the
peak activity 0.28 spiders per hill was recorded in S3 which was at par with S2 (0.21).
The of spider population per hill during 2018-2019 revealed that the peak activity
(0.23) was recorded in V7. All the varieties were at par with each other. The data
pertaining to overall mean spider population per hill in different varieties during 2019-
2020 revealed peak activity 0.24 spiders per hill in V9 which was at par with V3 and V4
with 0.20 and 0.20, respectively.
The pooled data for two years revealed that spider population per hill in different
varieties ranged from 0.12 to 0.23. The peak activity 0.23 spiders per hill was recorded in
V9.
The data pertaining to overall mean spider population per hill in different sowing
time and varieties during 2018-2019 and 2019-2020 was found to be non-significant and
ranged from 0.00 to 0.44 and 0.01 to 0.33, respectively.
The pooled data for two years (Kharif 2018-2019 and 2019-2020) revealed that
spider population per hill in different sowing time and varieties ranged from 0.01 to 0.36
which was found to be non-significant.
Data during 2018-2019, revealed the per cent infestation of yellow stem borer in
different establishment methods was recorded highest (0.83) in M1 (Drilling) and lowest
(0.28) in M2 (Early transplanting, 15 DAS).
The data revealed that during 2019-2020, the per cent infestation of yellow stem
borer was maximum (0.94) in M1 which was at par with M4 (Transplanting with Thomba
method) with 0.89 and the lowest (0.51) was recorded in M2 which was at par with M3
(Transplanting as per recommendation) with 0.62. The pooled data on per cent
infestation of yellow stem borer during both years revealed that the highest (0.89) per
cent infestation was recorded in M1 and the lowest (0.40) was recorded in M2.
The data pertaining to overall mean data during 2018-2019 revealed that the per
cent infestation of S. incertulas in different varieties was minimum (0.28) in Sahyadri-2 (V4) which was at par with V5 (Karjat-3) 0.29. During Kharif 2019-2020, mean data
indicated that the minimum (0.36) per cent infestation by yellow stem borer was
recorded in (V3) which was at par with Palghar-1 (V2) with 0.44. The pooled data on per
cent infestation of S. incertulas in different varieties during both years revealed that the
lowest (0.46) was recorded in V5 which was at par with V2 and V3 0.46 and 0.50,
respectively.
The data on overall mean revealed that during 2018-2019 the per cent infestation
by yellow stem borer was minimum (0.13) in M2V4 (Early Transplanting, 15 DAS X
Sahyadri-2) which was at par with M2V5 (Early transplanting, 15 DAS X Karjat-3) and
M2V2 (Early transplanting, 15 DAS X Palghar-1) 0.15 and 0.23, respectively. During
2019-2020 the mean data revealed that per cent infestation by yellow stem borer was
minimum (0.17) in M2V2 which was at par with M2V3 (Early transplanting, 15 DAS X
Karjat-2) and M3V3 (Transplanting as per recommendation X Karjat-2) 0.28 and 0.41,
respectively.
The pooled data on per cent infestation of S. incertulas during 2018-2019 and
2019-2020 revealed that the in different combinations of establishment methods and
varieties the lowest per cent infestation (0.20) was recorded in M2V2 which was at par
with M2V5 0.33. The overall mean data of the per cent infestation of leaf folder in
different establishment methods during 2018-2019 revealed that the lowest (0.33) was
recorded in M2 which was at par with M4 with 0.33.
During Kharif 2019-2020 the overall mean data on per cent infestation of leaf
folder in different establishment methods was lowest per cent infestation by leaf folder
(0.09) was recorded in M2. The pooled mean data on per cent infestation of C. medinalis
during 2018-2019 and 2019-2020 revealed in different establishment methods the lowest
per cent infestation by leaf folder (0.21) was recorded in M2.
The data pertaining overall mean during 2018-2019, revealed that the per cent
infestation of C. medinalis in different varieties was maximum (0.62) in variety Karjat 184 (V1) which was at par with Karjat-7 (V6). The minimum per cent infestation by leaf
folder 0.22 was recorded in Karjat -3 (V5) which was at par with V4 (Sahyadri-2) with
0.25.
The mean data during 2019-2020 revealed that the minimum (0.12) per cent
infestation by leaf folder was recorded in V4 which was at par with V6 with 0.13.The pooled data on per cent infestation of C. medinalis during 2018-2019 and
2019-2020 revealed that the lowest (0.18) was recorded in V4 which was at par with V5
with 0.22.
The mean data revealed that during 2018-2019 the per cent infestation by leaf
folder was minimum (0.18) in M3V5 (Transplanting as per recommendation X Karjat-3),
M2V4, M4V5 (Transplanting with Thomba method X Karjat-3), M1V5 (Drilling X Karjat 3), M3V4, M2V5 and M4V4 (Transplanting with Thomba method X Sahyadri-2) with
0.19, 0.22, 0.24, 0.25, 0.28 and 0.28, respectively.
During 2019-2020 the per cent infestation by leaf folder revealed minimum
(0.05) in M2V6 which was at par with M2V4 (0.07).
The pooled data on per cent infestation of C. medinalis during both the years
revealed that in different combinations of establishment methods and varieties the lowest
per cent infestation (0.13) was recorded in M2V4 which was at par with M2V5, M3V4 and
M2V6 0.19, 0.19 and 0.20, respectively.
The data pertaining to overall mean revealed that during 2018-2019, the per cent
infestation of blue beetle in different establishment methods lowest in M2 and M4 with
0.59 and 0.59 which was at par with each other.
During Kharif 2019-2020, mean data indicated that the per cent infestation of
blue beetle, in establishment method M1 (Drilling) recorded highest 0.92 and the lowest
(0.40) was recorded in M2. The pooled data on per cent infestation of blue beetle during
2018-2019 and 2019-2020 revealed that highest (0.98) per cent infestation of L. pygmaea
was recorded in M1 and the lowest (0.50) was recorded in M2.
The data pertaining to overall mean during 2018-2019, revealed that the per cent
infestation of L. pygmaea in different varieties was maximum (1.08) in V1 which was at
par with V6 and the minimum 0.37 was recorded in V5. The overall mean data during
2019-2020 revealed that minimum (0.41) per cent infestation by blue beetle was
recorded in V5 which was at par with V2, V3 and V4 0.44, 0.45 and 0.60, respectively.
The pooled data on per cent infestation of L. pygmaea during 2018-2019 and 2019-2020
revealed that highest (1.07) was recorded in V1 which was at par with V6 (1.05) and the
(0.39) was recorded in V5 which was at par with V2 (0.56).
The data pertaining to overall mean revealed that during 2018-2019 the per cent
infestation by blue beetle was minimum (0.25) in M4V5 (Transplanting with Thombamethod X Karjat-3) which was at par with, M3V5 and M2V5 0.32, 0.34 and 0.35,
respectively. During 2019-2020, the overall mean data on per cent infestation by blue
beetle was minimum (0.19) in M2V3 which was at par with M2V5 (0.28. The pooled data
on per cent infestation of L. pygmaea during 2018-2019 and 2019-2020 revealed in
different combinations of establishment methods and varieties the lowest (0.25) was
recorded in M2V3 which was at par with M2V5 and M3V5 0.32 and 0.34, respectively.
The pooled data of average grain yield and straw yield during 2018-2019 and
2019-2020 indicated that the M3 recorded higher grain yield (3917.82 kg ha-1
) which was
at par with M4 (3917.82 kg ha-1
) followed by M2 (3772.22 kg ha-1
) and lesser grain yield
was obtained in M1(3660.30 kg ha-1
). The pooled grain yield during 2018-2019 and
2019-2020 of different varieties revealed that the variety V5 recorded higher grain yield
(4212.5 kg ha-1
) which remained at par with V2 (4028.30 kg ha-1
) and V3 (4007.12 kg ha 1
). The pooled data of average yield of rice in interaction of different establishment
methods and varieties during 2018-2019 and 2019-2020 revealed that, M3V3 recorded
significantly higher grain yield (4845.10 kg ha-1
) over rest of the treatment combinations
except M2V5 and M4V5 and M2V2