scholarly journals Relative abundance of stem borer species and natural enemies in rice ecosystem at Madhupur, Tangail, Bangladesh

2016 ◽  
Vol 12 (2) ◽  
pp. 267-272 ◽  
Author(s):  
MM Rahaman ◽  
KS Islam ◽  
M Jahan ◽  
MAA Mamun
Keyword(s):  
Relative Abundance ◽  
Natural Enemies ◽  
Wolf Spider ◽  
Stem Borer ◽  
Carabid Beetle ◽  
Growth Stages ◽  
Stem Borers ◽  
Ladybird Beetle ◽  
Yellow Stem Borer ◽  
Mirid Bug

The relative abundance of different stem borer species and their natural enemies with interaction effects were studied at three growth stages of irrigated Boro rice at Madhupur under the district of Tangail, Bangladesh during January to April, 2013. Five stem borer species viz; Yellow stem borer (Scirpophaga incertulas), Pink stem borer (Sesamia inferens), Dark headed stem borer (Chilo polyhcrysus), Stripped stem borer (Chilo suppressalis), White stem borer (Scirpophaga innotata), and nine different natural enemies were collected from the rice fields and recorded. The population of stem borers and natural enemies was highest in tillering stage and lowest in seedling stage. The relative abundance of stem borer species under investigation showed ranking order; yellow stem borer >dark headed stem borer>pink borer>white borer>stripped stem borer and natural enemies as ladybird beetle >long jawed spider>wolf spider>damselfly>carabid beetle>green mirid bug>lynx spider>dragon fly>ear wig. Populations of all five stem borers were positively correlated with ladybird beetle, wolf spider, long jawed spider, lynx spider, damsel fly, dragon fly, green mirid bug and negatively correlated with carabid beetle and earwig.J. Bangladesh Agril. Univ. 12(2): 267-272, December 2014

scholarly journals Potentiality of light source and predator for controlling brown planthopper

2020 ◽  
Vol 30 (3) ◽  
pp. 275-281
Author(s):  
M Sardar ◽  
MR Khatun ◽  
KS Islam ◽  
MT Haque ◽  
G Das
Keyword(s):  
Energy Saving ◽  
Light Source ◽  
Light Trapping ◽  
Brown Planthopper ◽  
Wolf Spider ◽  
Nilaparvata Lugens ◽  
Carabid Beetle ◽  
Maximum Effect ◽  
Light Sources ◽  
Ladybird Beetle

Experiments were conducted at the net house and laboratory of the Entomology Division of Bangladesh Institute of Nuclear Agriculture (BINA) to determine the effectiveness of four light sources for light trapping, and performance of three predators for controlling brown plant hopper, Nilaparvata lugens (Stal.).The light intensity and sources were 30-50 lux (candle light), 80-100 lux (kerosene lamp), 180-200 lux (bulb) and 380-400 lux (energy saving lamp). The predators, ladybird beetle, carabid beetle and wolf spider, Light traps of 380-400 lux from energy saving lamp showed maximum effect in reducing the pest brown planthopper. Other light sources had little effect on brown planthopper. Light source of 30-200 lux reduced only a few brown planthopper. The predator wolf spider, Lycosa pseudoannulata consumed all the prey individuals of Nilaparvata lugens in three days exposure period indicating its high predation potentiality. Performance of ladybird beetle, Micraspis discolor was moderate and the carabid beetle, Ophionea indica was poor in controlling brown planthopper. The findings of these experiments indicate that light trapping with a source of 380-400 lux, predation by Lycosa pseudoannulata are the promising options in reducing brown planthopper population successfully and it could be an important part of IPM that is essential for the sustainable management of this deleterious brown planthopper in rice cultivation. Progressive Agriculture 30 (3): 275-281, 2019

Status of Insect Pests and Natural Enemies of Direct Seeded and Transplanted Rice

2017 ◽  
Vol 14 (4) ◽  
pp. 11-29
Author(s):  
K N Ashrith
Keyword(s):  
Natural Enemies ◽  
Insect Pests ◽  
Stem Borer ◽  
Cnaphalocrocis Medinalis ◽  
Green Leafhopper ◽  
Yellow Stem Borer ◽  
Transplanted Rice ◽  
Rice Leaf Folder ◽  
The Status ◽  
Direct Seeded

Studies were conducted on the status of insect-pests and natural enemies of direct seeded rice (DSR) in comparison with puddled transplanted rice (PTR) during rabi and kharif in 2013-14. The rice leaf folder and yellow stem required both the seasons. Maximum leaf folder Cnaphalocrocis medinalis (Guenee) (13.03%) damage and yellow stem borer damage (13.49%) of white ears was recorded during last week of October and second week of November in DSR under unprotected situation respectively. While sucking pests population mainly green leafhopper incidence was comparatively high in PTR (3.29 and 4.92/hill) also plant hoppers incidence (BPH and WBPH) (28.90 and 18.44 adults/hill) under unprotected situation during two seasons respectively. Population of predators at both the season remained high throughout the study period in PTR than the DSR except

scholarly journals Abundance of arthropod insect pests and natural enemies in rice field as influenced by rice growth stages and neighboring crops

2017 ◽  
Vol 42 (2) ◽  
pp. 309-319
Author(s):  
P Mukherjee ◽  
MMH Khan
Keyword(s):  
Natural Enemies ◽  
Insect Pests ◽  
Ground Beetle ◽  
Stem Borer ◽  
Seedling Stage ◽  
Growth Stages ◽  
Stink Bug ◽  
Rice Growth ◽  
Rice Bug ◽  
Tree Habitat

Studies were conducted to record the abundance of arthropod insect pests and natural enemies in rice fields as influenced by rice growth stages and neighboring crops at the experimental farm of Patuakhali Science and Technology University (PSTU), Dumki, Patuakhali during 2012 in Boro rice season following randomized complete block design. Results indicated that rice-tree habitat showed the highest abundance of leafhoppers (100.75) followed by cricket (16.50), grasshoppers (15.25) and stink bugs (15.25). The lowest abundance of all insect pests was in rice-sesame habitat. No significant differences were found on the abundance of rice bug, rice hispa and stem borer populations. At seedling stage, the highest abundance of leafhopper (94.25) was recorded followed by grasshopper (47.00) and stink bug (26.50) while the lowest was stem borer (0.57) and rice hispa (6.00). At early tillering stage, maximum number of grasshopper (17.25) was recorded followed by cricket (7.00). At maximum tillering stage, the highest abundance of leafhoppers (122.5) was obtained followed by rice bug (62.00) and the lowest was the stink bug (7.00). At panical initiation stage, the highest abundance of rice bug (334.00) was recorded which was followed by leafhoppers (65.25) and the lowest was the cricket (15.75). No population of rice hispa and stem borer was recorded at maximum tillering and panical initiation stages. In case of natural enemies, the highest abundance of lady bird beetle (45.27) and damselfly (16.73) was found in rice-rice habitat. The highest abundance of ichneumonid wasp (57.53) was in rice-tree habitat and ground beetle (28.80) was in rice-sesame habitat. No significant differences were observed on the abundance of dragonfly, spider and dipteran fly among different habitats. Among different growth stages of rice plant, significantly the highest abundance of lady bird beetle was recorded at maximum tillering stage. The highest abundance of ichneumonid wasp and ground beetle was recorded at seedling stage. The highest abundance of damselfly, spider and dipteran fly was at early tillering stage. No significant difference was observed on the abundance of dragonfly among different rice growth stages.Bangladesh J. Agril. Res. 42(2): 309-319, June 2017

scholarly journals Kecepatan dan Hambatan Rekolonisasi Musuh Alami Setelah Aplikasi Insektisida di Pertanaman Padi

Agrikultura ◽  
2016 ◽  
Vol 27 (1) ◽  
Author(s):  
Baehaki Suherlan Effendi ◽  
Eko Hari Iswanto ◽  
Dede Munawar ◽  
Nono Sumaryono
Keyword(s):  
Natural Enemies ◽  
Natural Enemy ◽  
Stem Borer ◽  
The Other ◽  
Wet Season ◽  
Insecticide Application ◽  
Yellow Stem Borer ◽  
Other Hand ◽  
Brown Plant Hopper ◽  
Sweep Net

ABSTRACTRecolonization of Natural Enemies after Insecticide Application in Rice Planting AreaThe study to assess recolonization of natural enemies after insecticide application in rice planting area was carried out in the wet season of 2013 at Karawang Regency. The application of several insecticides of rynaxypyr, fipronil, dinotefuran, pymetrozine, imidacloprid, and BPMC was conducted when brown plant hopper population was rising and yellow stem borer flight was occurring. Observation of natural enemies was carried out on 1, 3, 5, 7, 10, 15, and 21 days after application (DAA) using sweep net for 4 swings per plot. The results showed that spiders were relatively safe to the rynaxypyr and fipronil insecticides with hampered recolonization index (HRI) of very light and light where recolonization occurred on 1 DAA. All tested insecticides highly affected Telenomus rowani with HRI of heavy to very heavy that this parasitoid recolonized at 7 DAA. On the other hand, all insecticides showed low influence on the recolonization of Tetrastichus schoenobii with HRI from unhampered to light hamper and the recolonization occurred on 1 DAA. The effect of rynaxypyr, fipronil, imidacloprid and BPMC application on Oligosita sp. and Anagus sp. recolonization was categorized to be low with HRI of light hamper that the recolonization happened at 1 DAA and 5 DAA, respectively. The insecticides of fipronil and BPMC were considered to slightly hamper the chironomid with the light value of the HRI and the chironomid recolonized at 1 DAA on fipronil and 3 DAA on BPMC.Keywords: Effect of insecticides, Recolonization of natural enemy, RiceABSTRAKPenelitian rekolonisasi musuh alami setelah aplikasi insektisida di pertanaman padi dilakukan pada musim hujan 2013 di Kabupaten Karawang. Aplikasi insektisida berbahan aktif rinaksipir, fipronil, dinotefuran, pimetrozin, imidakloprid, dan BPMC dilakukan saat populasi hama wereng coklat meningkat, sementara penerbangan penggerek batang padi kuning sedang berlangsung. Pengamatan terhadap musuh alami menggunakan jaring serangga sebanyak 4 ayunan per petak pada 1, 3, 5, 7, 10, 15, dan 21 hari setelah aplikasi (HSA). Hasil penelitian menunjukkan bahwa laba-laba relatif aman terhadap insektisida rinaksipir dan fipronil dengan nilai indeks hambatan rekolonisasi (IHR) kedua insektisida tersebut sangat ringan dan ringan dengan kecepatan rekolonisasi laba-laba pada 1 HSA. Semua insektisida menekan sangat tinggi terhadap Telenomus rowani dengan IHR berat sampai sangat berat dan rekolonisasi parasitoid tersebut dinilai lambat yaitu 7 HSA. Insektisida menekan sangat rendah terhadap Tetrastichus schoenobii dengan IHR dari tidak ada hambatan sampai hambatan ringan dan kecepatan rekolonisasinya terjadi pada 1 HSA. Tekanan insektisida rinaksipir, fipronil, imidakloprid, dan BPMC terhadap Oligosita sp. dan Anagus sp. agak rendah dengan IHR ringan dan kecepatan rekolonisasi Oligosita sp. pada 1 HSA dan Anagrus sp. pada 5 HSA. Insektisida fipronil dan BPMC agak menekan chironomid dengan nilai IHR ringan dan kecepatan rekolonisasi 1 HSA pada fipronil dan 3 HSA pada BPMC.Kata Kunci: Pengaruh Insektisida, Rekolonisasi musuh alami, Padi

scholarly journals The Effect of Planting Distance and Depth of Water Puddle to Damage Intensity by Rice Yellow Stem Borer (Scirpophaga incertulas Walker) (Lepidoptera: Crambidae) in Relation to Microclimate Change

2019 ◽  
Vol 23 (2) ◽  
pp. 270
Author(s):  
Ulfah Nuzulullia ◽  
Edhi Martono ◽  
Y. Andi Trisyono
Keyword(s):  
Air Temperature ◽  
Stem Borer ◽  
Growth Stages ◽  
Weather Factors ◽  
Scirpophaga Incertulas ◽  
Factors Affecting ◽  
Yellow Stem Borer ◽  
Weather Factor ◽  
Randomized Design ◽  
Planting Distance

The rice yellow stemborer (Scirpophaga incertulas) is one of main pests on rice which may attack at all growth stages. The weather was considered one of influencing factors against its infestation. Therefore, this research was conducted to recognize microclimate factors affecting the infestation of S. incertulas. The experiment was carried out in Institute for Pest Forecasting, Jatisari Karawang from January-April 2017. The investigation was arranged in Factorial of Blocked Randomized Design with four repetitions and  combinations of treatment factors, i.e. planting distance (conventional and jajar legowo 2 : 1) and depth of puddle (5 cm, 0 cm, and intermittent). The observation was performed from one to 12 weeks after planting. At the same time, three weather factors (temperature, relative humidity and rainfall) were observed in four West Java regencies i.e. in Bekasi, Karawang, Subang and Indramayu. The results showed that the conventional and the jajar legowo schemes are influenced by the micro air temperature.  Both planting distance and depth of water puddle treatment were influenced by the micro air temperature. Microclimate factors which influenced the intensity of infestation were air temperature, humidity, water temperature, and light intensity. The weather factor showing effects  in Bekasi, Karawang, and Indramayu was rainfall. However, the three weather factors did not affect on the acreage of pest infestation in Subang.

scholarly journals IMPACT OF ECOLOGICAL ENGINEERING ON THE TYPE AND POPULATION OF PESTS, NATURAL ENEMIES, AND YIELDS OF THE RICE

2020 ◽  
Vol 20 (2) ◽  
pp. 140-149
Author(s):  
N Usyati ◽  
Nia Kurniawati ◽  
Oco Rumasa
Keyword(s):  
Natural Enemies ◽  
Block Design ◽  
Ecological Engineering ◽  
Stem Borer ◽  
Flowering Plants ◽  
Crop Damage ◽  
Wet Season ◽  
Yellow Stem Borer ◽  
Rice Yields ◽  
The Impact

Impact of ecological engineering on the type and population of pests, natural enemies, and yields of the rice. This study was performed to investigate the impact of the ecological engineering in the rice field on the crop damage caused by yellow stem borer, including it’s type and population as well as its natural enemies and the yields of the rice. The study was conducted in farmer’s fields in Subang District in the dry and the wet seasons. The research was arranged using Randomized Complete Block Design (RCBD) with 9 treatments and 3 replications. The observation was conducted on the crop damage caused by yellow stem borer, the type and the population of pests insect, its predator, and parasitoid as well as yields of the rice. The planting of flowering plants and crops showed inconsistent effect on the population of brown planthoppers, white-backed planthoppers, and rice black bug. Moreover, it also not significantly impact the yellow stem borer. The planting of flowering plants and crops did not affect the rice yields. The parasitization level of the parasitoid was in ranged of 47.32–50.47% (dry season) and 36.37–53.92% (wet season). The neutral insect population was dominant at the beginning of planting (11–1743), meanwhile at the maximum tillering until the harvest was dominated by predators (9.33–131.33). The parasitoids were relatively contrasted on each stage of the rice plant.

scholarly journals Study of Paddy Stem Borers Population Dynamics and Influencing Environmental Factors through Light Trap

2019 ◽  
pp. 1-10
Author(s):  
Mubashar Hussain ◽  
Muhammad Yasir Ali ◽  
Muhammad Umer ◽  
Numan Ejaz ◽  
Muhammad Bilal ◽  
...  
Keyword(s):  
Insect Pests ◽  
Light Trap ◽  
Weather Conditions ◽  
Stem Borer ◽  
Rice Crop ◽  
Stem Borers ◽  
Yellow Stem Borer ◽  
Insect Trap ◽  
Rice Stem Borers ◽  
Trap Catches

Rice crop is affected by many insect pests like White Stem Borer, Yellow Stem Borer and Pink Stem Borer. Rice stem borers are main pests affecting rice crop from nursery to physiological maturity including them in key pests. These studies had been carried out to discover the encouraging and antagonistic boundaries of weather parameters for the rice stem borers. As per result of studies, the population was recorded higher from mid-March to 1st week of May and then it escalated again from 2nd week of August to a maximum in September in case of Yellow Stem Borer (Scirpophaga incertulus) and White Stem Borer (Scirpophaga innotata) of rice during the both years 2017-2018; while in case of Pink Stem Borer population recorded from mid-September to the last week of April in 2017 and lasted till 4th week of May 2018. On evaluating the weather conditions specially temperature and relative humidity, it was detected that insect trap catches noted inside a certain range of temperature that varies from 18-35°C in case of White Stem Borer and 17-34°C for Yellow stem borer of rice. Extreme catches were documented in April and September inside a temperature range of 26-32°C considering it ideal series of temperature for insect light trap catches and activity of yellow and white stem borer. However, in case of pink stem borer above 32°C no catch was observed.

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.

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