Seasonal incidence of rice yellow stem borer Scirphophaga incertulas (Walker)

2018 ◽  
Vol 80 (3) ◽  
pp. 536
Author(s):  
D. Shilpa ◽  
K.L. Naik ◽  
B. B. Hosetti
Keyword(s):  
Stem Borer ◽  
Seasonal Incidence ◽  
Yellow Stem Borer

To study the seasonal incidence of rice stem borer Scirpophaga incertulas through pheromone trap

2019 ◽  
Vol 4 (02) ◽  
pp. 195-198
Author(s):  
Rajendra Singh ◽  
Amit Rana ◽  
S. K. Sachan ◽  
D. V. Singh ◽  
Vivek . ◽  
...  
Keyword(s):  
Block Design ◽  
Uttar Pradesh ◽  
Stem Borer ◽  
Pheromone Trap ◽  
Scirpophaga Incertulas ◽  
Seasonal Incidence ◽  
Yellow Stem Borer ◽  
Randomized Block Design ◽  
Major Pest ◽  
First Time

The present investigation was carried out to study the “Eco friendly management of yellow stem borer, Scirpophaga incertulas (Walker) on paddy in western plain zone of Uttar Pradesh” in randomized block design with three replications and seven treatments at Crop Research Center, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut. The yellow stem borer, S. incertulas (Walker) was recorded as major pest. The incidence of S. incertulas (Walker) was recorded on the incidence of yellow stem borer Scirpophaga incertulas (Walker) showed that it was recorded on 26th standard week for the first time and continued till second week of November i.e. 46th standard week. The infestation of stem borer recorded as dead heart/ white ear head ranged from 0.85 to 15.25 per cent during the crop season i.e. Kharif 2017 and positive correlated with all the other weather parameters.

Seasonal incidence Efficacy of different novel insecticides and bio-pesticides against yellow stem borer Scirpophaga incertulus (Walker) on Rice

2019 ◽  
Vol 3 (02) ◽  
pp. 161-165
Author(s):  
Rajendra Singh ◽  
Anant Kumar ◽  
Anant Kumar ◽  
Nirvesh Singh ◽  
Amit . ◽  
...  
Keyword(s):  
Stem Borer ◽  
Control Agent ◽  
Basmati Rice ◽  
Research Centre ◽  
Scirpophaga Incertulas ◽  
Seasonal Incidence ◽  
Yellow Stem Borer ◽  
Control Application ◽  
Crop Research ◽  
Paddy Yield

The present investigation was carried out to study the efficacy of different novel insecticides and bio-pesticides against stem borer Scirpophaga incertulus (Walker) during kharif 2015-16 at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut. Efficacy of newer insecticides (fipronil 5 SC, cartap hydrochloride 50SP,chlorpyriphos 20 EC, imidacloprid), one biopesticide (Neemarin 1500 ppm) and one bio-control agent (Trichogramma japonicum) were evaluated against yellow stem borer Scirpophaga incertulas (Walk.) in Basmati rice. The stem borer recorded as dead heart ear heads ranged from 4.85 to 10.55 per cent and white ear head showed that it was recorded on 38th standard weak. All the treatments were found significantly effective in reducing the infestation of stem borer and increasing the yield compared with control. Application of fipronil 5 SC was the most effective treatment in reducing the stem borer infestation at all observational interval resulting highest grain yield The results of paddy yield depicted in table 3, showed that the plots treated with fipronil 0.3 GR @ 25 kg/ha gave the highest yield (45.56 q/ha).

Study on varietal preferences and seasonal incidence of parasitoids of rice pests

ENTOMON ◽  
2019 ◽  
Vol 44 (1) ◽  
pp. 65-72
Author(s):  
J. Alfred Daniel ◽  
K. Ramaraju ◽  
S. Mohan Kumar ◽  
P. Jeyaprakash ◽  
N. Chitra
Keyword(s):  
Rice Field ◽  
Stem Borer ◽  
Egg Parasitoid ◽  
Egg Mass ◽  
Seasonal Incidence ◽  
Yellow Stem Borer ◽  
Rice Pests ◽  
The Mean ◽  
Fortnightly Interval ◽  
Varietal Preference

The egg masses of yellow stem borer, larvae of leaf folder and rice horned caterpillar and eggs of ear head bug were collected randomly at fortnightly interval from four different varieties viz., CO 43, CO 50, CO 51 and CR 1009 from the rice field. The data was pooled and per cent parasitization was calculated to find out the varietal preference and seasonal variations of parasitoids. Among the four different varieties tested for the preference of parasitoids, per cent parasitization of stem borer egg mass was found to be more (26.59) in CO 50. The per cent parasitization of leaf folder larvae and rice horned caterpillar was found to be maximum in CO 51(40.29) and CO 43(33.21), respectively. In case of ear head bugs, the egg  parasitization was maximum (27.70) in CO 50. The mean egg mass parasitization of stem borer was highest (71.88) in first fortnight of December. The larval parasitization of leaf folder and rice horned caterpillar were found to be maximum during the second fortnight of December (64.3) and the first fortnight of January (71.88), respectively. The parasitism rate of ear head bug eggs was maximum (62.95) during the second fortnight of December. Interestingly, phoresy exhibited by Sceliocerdo sp. an egg parasitoid of Neorthacris sp. was also recorded.

scholarly journals Relative Abundance and Field Efficacy of Insecticides and Bio-control Agents Against Stem Borer Species in Rice (Oryza sativa L.)

2021 ◽  
Author(s):  
T. Sharmitha ◽  
C. Gailce Leo Justin ◽  
S. Sheeba Joyce Roseleen
Keyword(s):  
Field Experiments ◽  
Insect Pests ◽  
Oryza Sativa L ◽  
Stem Borer ◽  
Field Trials ◽  
Control Agent ◽  
High Yield ◽  
Seasonal Incidence ◽  
Yellow Stem Borer ◽  
Highly Effective

Background: In India, out of the total loss incurred by different insect pests of paddy, 25 to 30 per cent damage is done by stem borer alone. Many conventional insecticides though have been evaluated against stem borers, yet, most of the chemicals have failed to provide adequate control. Hence, the present study aimed to evaluate the efficacy of some newer molecules of insecticides and bio-control agents.Methods: Field trials were conducted to record the seasonal incidence and to evaluate the efficacy of insecticides and bio-control agents against the stem borer species in rice during Kharif and Rabi. Result: Field experiments revealed that during Kharif 2018, chlorantraniliprole 18.5 SC was highly effective with 92.98 and 91.24 per cent reduction of stem borer infestation over control at vegetative and reproductive stages, respectively and recorded a high yield of 5720 kg/ha followed by spinetoram 11.7 SC with 83.16 and 80.82 per cent reduction of stem borer over control at vegetative and reproductive stages, respectively. During Rabi 2019, spinetoram 11.7 SC was highly effective with 92.36 and 93.73 per cent reduction of stem borer infestation over control at vegetative and reproductive stages respectively and recorded a high yield of 4570 kg/ ha, followed by chlorantraniliprole 18.5 SC with 84.60 and 91.48 per cent reduction of stem borer at vegetative and reproductive stages, respectively. The difference in the efficacy of insecticides during Khaif, 2018 and Rabi, 2019, might be due to shift in the species occurrence of stem borer, with a dominant occurrence of yellow stem borer (80.61%) in Kharif 2018 and pink stem borer (70.00%) in Rabi, 2019. The bio-control agent Trichogramma japonicum exerted minimum reduction of stem borer with a low grain yield of 3946.6 kg/ha.

scholarly journals Influence of abiotic factors on stem borer incidence and species distribution in rice (Oryza sativa L.)

2021 ◽  
Vol 42 (4(SI)) ◽  
pp. 1136-1133
Author(s):  
T. Sharmitha ◽  
◽  
C.G.L. Justin ◽  
S.S.J. Roseleen ◽  
◽  
...  
Keyword(s):  
Relative Humidity ◽  
Wind Velocity ◽  
Relative Abundance ◽  
Abiotic Factors ◽  
Light Trap ◽  
Stem Borer ◽  
Seasonal Incidence ◽  
Yellow Stem Borer ◽  
Rice Ecosystem ◽  
Trap Catches

Aim: To evaluate the effect of abiotic factors such as temperature, relative humidity, wind velocity, sunshine hours and rainfall on the distribution and relative abundance of stem borer species in rice ecosystem. Methodology: Seasonal incidence of stem borer species was monitored using light trap catches and were correlated with the weather parameters. The relative abundance of stem borer species during Kharif and Rabi was estimated based on light trap catches and larval incidence. Results: Seasonal incidence revealed the occurrence of three stem borer species (yellow stem borer, pink stem borer and dark headed borer) populations in rice ecosystem. Yellow stem borer was found to dominate in rice ecosystem during Kharif, (80.61%) whereas during Rabi, pinkstem borer was found to be dominant (72.60%) than yellow stem borer (21.92%) and dark headed borer (5.48%). Weather parameters such as temperature, rainfall and wind velocity negatively influenced the occurrence of stem borer species in rice, whereas relative humidity and sunshine hours had positive effect. Regression analysis revealed the increased effect of abiotic factors such as temperature, relative humidity and wind velocityon the population of pink stem borer against yellow stem borer and dark headed borer. Interpretation: The present study reveals that, the change in weather parameter during seasons, such as temperature (25 - 27°C), relative humidity (69 - 80 %) and wind velocity (3 - 4 km hr-1) increased the fitness of pink stem borer species population than yellow stem borer and dark headed borer species in rice ecosystem, which was evidenced by the occurrence and relative abundance of pink stem borer population during Kharif 2018 and Rabi 2019 respectively.

Natural parasitism of eggs of yellow stem borer, Scirpophaga incertulas Walker (Lepidoptera: Crambidae) in rice ecosystem at Tiruchirappalli, Tamil Nadu

ENTOMON ◽  
2020 ◽  
Vol 45 (3) ◽  
pp. 181-188
Author(s):  
T. Sharmitha ◽  
C. Gailce Leo Justin ◽  
S. Sheeba Joyce Roseleen ◽  
P. Yasodha
Keyword(s):  
Field Study ◽  
Tamil Nadu ◽  
Host Density ◽  
Stem Borer ◽  
Scirpophaga Incertulas ◽  
Egg Masses ◽  
Yellow Stem Borer ◽  
Rice Ecosystem ◽  
Natural Parasitism

Three species of parasitoids viz., Telenomus dignus Gahan, Trichogramma japonicum, Ishii and Tetrastichus schoenobii Ferriere were recorded from the egg masses of rice yellow stem borer, Scirpophaga incertulas (Walker) in a field study. The extent of parasitism was high during Rabi (43.33 – 93.33 %) and low during Kharif (0 - 40.00 %). Parasitism by T. dignus was maximum in October (50.00 %), T. japonicum, in November (23.08 %) and T. schoenobii in February (55.55 %). dignus and T. schoenobii in combination parasitized maximum number of egg masses (41.82 %). Multiple parasitism by the three species was high in December (8.33 %) and January (7.14%). Parasitic potential was maximum, when T. schoenobii alone parasitised the egg masses followed by T. dignus and T. schoenobii in combination. Host density in the field influenced the extent of parasitism.

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