scholarly journals Inventory And Potential Of Yellow Rice Stem Borer (Scirpophaga incertulas Walker) Parasitoid In Rice Plantation (Oryza sativa L) In Three Villages, Lima Puluh Regency, Batubara District, Northern Sumatra

Akta Agrosia ◽  
2020 ◽  
Vol 23 (2) ◽  
pp. 55-62
Author(s):  
Sulastri Siagian ◽  
Ameilia Zuliyanti Siregar ◽  
Maryani C. Tobing
Keyword(s):  
Distribution Pattern ◽  
Oryza Sativa L ◽  
Stem Borer ◽  
Rice Cultivation ◽  
Survey Method ◽  
Scirpophaga Incertulas ◽  
Dominance Index ◽  
Insecticide Treatment ◽  
Rice Stem Borer ◽  
Integrated Pest Control

Yellow rice stem borer (YRSB), Scirpophaga incertulas Walker, often causes decreased of rice production. One of the pest controlling of YRSB used based on the concept of IPC (integrated Pest Control) was biological control using egg parasitoids. The purpose of this research was to find out the inventory and potential of parasitoids of eggs in yellow rice stem borer (S. incertulas) on rice cultivation at 3 locations (Kuala Gunung Village, Cahaya Pardomuan Village, and Air Hitam Village) in Lima Puluh Sub-District, Batubara Regency, Northern Sumatra. The study used a survey method by taking samples of groups of eggs by purposive sampling on rice cultivation. Egg clusters are kept for several days until the parasitoids appear. Parasitoid that appeared was preserved in a bottle containing 70% alcohol, then identification was carried out at the Pest Laboratory of Departmemt of Agrotechnology, Faculty of Agriculture, University of Sumatera Utara. This research was conducted from March to September 2019. The results obtained by 3 Parasitoid families were identified, such as Eulophidae, Scelionidae, and Trichogrammatidae. Parasitoid level and parasitoid dominance index were higher in the non-insecticide treatment compared to the insecticide treatment. The highest parasitic rate (41.78%) of the Eulophidae family and the lowest (0.00%) of the Trichogrammatidae family. The highest parasitoid dominance index (0.67) was found in the Eulophidae family and lowest (0) in the Trichogrammatidae family. The distribution pattern of the Eulophidae family was grouped, the Trichogrammatidae family was regular while the Scelionidae family was different for each village. Our prediction, the research will be useful for future.Keywords: Rice, Scirpophaga incertulas, parasitoid, parasitation Level, dominance, distribution pattern.

scholarly journals UJI EFEKTIVITAS NEMATODA ENTOMOPATOGEN (RHABDITIDA: Steinernema DAN Heterorhabditis) SEBAGAI MUSUH ALAMI NON-ENDEMIK PENGGEREK BATANG PADI KUNING (Scirpophaga incertulas)

2007 ◽  
Vol 7 (2) ◽  
pp. 71-79
Author(s):  
Chaerani Chaerani ◽  
Bebet Nurbaeti
Keyword(s):  
Entomopathogenic Nematodes ◽  
Insect Pests ◽  
Larval Mortality ◽  
Damage Threshold ◽  
Stem Borer ◽  
Leaf Sheath ◽  
Scirpophaga Incertulas ◽  
Potted Plants ◽  
Plant Damage ◽  
Rice Stem Borer

Efficacy Tests of Entomopathogenic Nematodes (Rhabditida:  Steinernema dan Heterorhabditis) as Non-endemic Natural Enemies of Yellow Rice stem Borer (Scirpophaga incertulas). Yellow rice stem borer (Scirpophaga incertulas) is a chronic insect pests of irrigated rice and difficult to control.  Entomopathogenic nematodes from the genus Steinernema and Heterorhabditis are promising biological control agents for this pest as their infective juveniles (IJs) are capable of seeking and infecting insect living in moist, cryptic habitat such as galleries created by stem borer larvae. Thirteen indigenous and exotic Steinernema and Heterorhabditis sprayed to rice seedlings in laboratory with nematodes at concentrations of 0.5 or 2.0×104 IJs ml-1 water caused larval mortality between 7–93%.  Further test in greenhouse on nematodes that had >50%  efficacy showed that an indigenous isolate, H. indicus INA H17, was the most effective among the tested nematodes in killing larvae or pupae (78%).  Reduction in plant damage caused by the insects could not be demonstrated as the trials was limited to potted plants. The survival ability of nematodes on rice plants was evaluated by using INA H4 as an example. A low percentage of INA H4 IJs (0.5%) persisted in inner leaf sheath until 7 days post application, while IJs on leaf surface and outer leaf sheath survived only until 2 and 48 hours post application, respectively. Improvement of application strategies including repeated spray, addition of antidessicant and adjusment of spray volume and application at damage threshold or plant critical period are deemed necessary to enhance nematode efficacy and reduce plant damage in the field.

scholarly journals THE STEM BORER INFESTATION ON RICE CULTIVARS AT THREE PLANTING TIMES

2016 ◽  
Vol 6 (2) ◽  
pp. 39
Author(s):  
Hendarsih Suharto ◽  
N. Usyati
Keyword(s):  
Stem Borer ◽  
Rice Cultivar ◽  
Rice Cultivars ◽  
Plant Type ◽  
Scirpophaga Incertulas ◽  
Planting Time ◽  
Yellow Stem Borer ◽  
Rice Stem Borer ◽  
Synthetic Sex Pheromone ◽  
Planting Distance

Stem borer is the second important rice pest after rats in Indonesia. A field trial was conducted in Karawang, West Java in dry season of 2003 to study the effect of planting time on the stem borer infestation on seven rice cultivars. The rice cultivars tested were Fatmawati (new plant type cultivar), Gilirang (semi-new plant type cultivar), Maro and Intani 3 (hybrid rice cultivars), and IR72, Cilosari and IR62 (inbreed rice cultivars). The three planting times (PT) were: (1) the early PT, 14 days before farmer’s PT, (2) the common PT, simultaneously with farmer’s PT, and (3) the late PT, 14 days after farmer’s PT. The trial was arranged in a split plot design with four replications. Planting time is the main plot and rice cultivar is the subplot. Fourteen-day old rice seedlings were transplanted at 25 cm x 25 cm planting distance in a 5 m x 6 m plot size. Species and fluctuation of rice stem borer were determined by using water traps containing four synthetic sex pheromone lures of rice stem borer species as attractant. Results showed that the dominant species of stem borer was yellow stem borer (Scirpophaga incertulas Wlk.). Degree of stem borer infestation depended upon the planting time. Stem borer infestation at the first planting time was higher (average 37.90%) compared to those found at the second and third planting time, i.e. 0.65% and 0.54%, respectively. Rice yields of Fatmawati, Gilirang, Maro, Intani-3, and Cilosari cultivars correlated with the degree of stem borer infestation, but did not correlate with planting time. Cilosari cultivar showed the most tolerant under heavily stem borer infestation. The present study implies that adjustment of planting time is the most feasible effort to reduce stem borer infestation because none of the seven rice cultivars tested were able to minimize damage under heavily infestation of yellow stem borer.

scholarly journals THE STEM BORER INFESTATION ON RICE CULTIVARS AT THREE PLANTING TIMES

2016 ◽  
Vol 6 (2) ◽  
pp. 39
Author(s):  
Hendarsih Suharto ◽  
N. Usyati
Keyword(s):  
Stem Borer ◽  
Rice Cultivar ◽  
Rice Cultivars ◽  
Plant Type ◽  
Scirpophaga Incertulas ◽  
Planting Time ◽  
Yellow Stem Borer ◽  
Rice Stem Borer ◽  
Synthetic Sex Pheromone ◽  
Planting Distance

Stem borer is the second important rice pest after rats in Indonesia. A field trial was conducted in Karawang, West Java in dry season of 2003 to study the effect of planting time on the stem borer infestation on seven rice cultivars. The rice cultivars tested were Fatmawati (new plant type cultivar), Gilirang (semi-new plant type cultivar), Maro and Intani 3 (hybrid rice cultivars), and IR72, Cilosari and IR62 (inbreed rice cultivars). The three planting times (PT) were: (1) the early PT, 14 days before farmer’s PT, (2) the common PT, simultaneously with farmer’s PT, and (3) the late PT, 14 days after farmer’s PT. The trial was arranged in a split plot design with four replications. Planting time is the main plot and rice cultivar is the subplot. Fourteen-day old rice seedlings were transplanted at 25 cm x 25 cm planting distance in a 5 m x 6 m plot size. Species and fluctuation of rice stem borer were determined by using water traps containing four synthetic sex pheromone lures of rice stem borer species as attractant. Results showed that the dominant species of stem borer was yellow stem borer (Scirpophaga incertulas Wlk.). Degree of stem borer infestation depended upon the planting time. Stem borer infestation at the first planting time was higher (average 37.90%) compared to those found at the second and third planting time, i.e. 0.65% and 0.54%, respectively. Rice yields of Fatmawati, Gilirang, Maro, Intani-3, and Cilosari cultivars correlated with the degree of stem borer infestation, but did not correlate with planting time. Cilosari cultivar showed the most tolerant under heavily stem borer infestation. The present study implies that adjustment of planting time is the most feasible effort to reduce stem borer infestation because none of the seven rice cultivars tested were able to minimize damage under heavily infestation of yellow stem borer.

scholarly journals Komposisi Spesies Penggerek Batang Padi dan Parasitoid Telurnya pada Ketinggian Tempat yang Berbeda

2021 ◽  
Vol 11 (1) ◽  
pp. 1
Author(s):  
I NYOMAN WIJAYA ◽  
WAYAN ADIARTAYASA ◽  
KETUT AYU YULIADHI
Keyword(s):  
Sea Level ◽  
Stem Borer ◽  
Chilo Suppressalis ◽  
Scirpophaga Incertulas ◽  
Rice Plants ◽  
Sesamia Inferens ◽  
Rice Stem Borer ◽  
Level Identification ◽  
Chilo Polychrysus

Composition of Rice Stem Borer Species and Their Egg Parasitoids at Different Altitudes. Rice stem borer is one of the main pest of rice plants that always percolating and attack plants in the field. The pests can result in damage to plants and lost of the grain from season to season. The aim of this research is to know composition and dominance rice stem borer species and role of their eggs parasitoid at an altitude of different places. Research is done by survey based on the height of different altitude in rice plants two weeks after cropping up until eleven weeks after planting. Research conducted from April until August 2019 in rice field that belonging to farmers at Subak Cemagi Let, Cemagi Village and Subak Teba, Mengwi village, Badung regency, Bali province. Subak Cemagi Let are at an altitude of 15 meters above sea level whereas Subak Teba are at an altitude of 300 meters above sea level. Identification of Rice stem borer larvae and their eggs parasitoid done in Pest Laboratory, Agriculture Faculty of Udayana University. Found three species rice stem borer in the height 15 mdpl namely Scirpophaga incertulas; Sesamia inferens dan Chilo suppressalis, whereas in the height 300 mdpl found four species namely Scirpophaga incertulas, Sesamia inferens, Chilo suppressalis, dan Chilo polychrysus.  S. incertulas was the most dominant at the two different altitude. Three species of eggs parasitoid that have role to suppress the development of rice stem borer at the different altitude namely Tetrastichus schoenobii, Telenomus rowani dan Trichogramma japonicum. T. schoenobii was the most dominant to suppress rice stem borer populations.

scholarly journals Screening for Sarawak Paddy Landraces with Resistance to Yellow Rice Stem Borer, Scirpophaga incertulas (Walker) (Lepidoptera: Crambidae)

2020 ◽  
Vol 43 (4) ◽  
Author(s):  
Alvin Xian Rong Ling ◽  
Freddy Kuok San Yeo ◽  
Nur Najwa Hamsein ◽  
Hieng Ming Ting ◽  
Mogeret Sidi ◽  
...  
Keyword(s):  
Leaf Surface ◽  
Stem Borer ◽  
Paddy Fields ◽  
Egg Mass ◽  
Resistance Screening ◽  
Stem Borers ◽  
Scirpophaga Incertulas ◽  
Rice Stem Borer ◽  
Rice Stem Borers ◽  
Abaxial Leaf Surface

The yellow rice stem borer, Scirpophaga incertulas (Walker) is a prevalent pest in paddy fields worldwide. In Sarawak, a survey on pest of paddy carried out from 2009 to 2011 covering 166 paddy fields revealed that rice stem borers caused 11.4% of total paddy damage. In order to reduce the damage, identifying resistance paddy variety is crucial. The objective of this study was to screen Sarawak paddy landraces with resistance to S. incertulas. Twelve Sarawak paddy landraces were selected randomly for this study. Antixenosis resistance screening was performed in aquariums (60 x 28 x 33 cm). Three replications of one-month-old seedlings were randomly arranged in aquarium and exposed to adult S. incertulas. The number and position of egg mass on each plant were recorded. Egg mass abnormalities were also observed. For antibiosis, rice culms of two-month old seedlings from each landrace were infested with larvae. The length of surviving larvae from five rice culms was measured. The experiment revealed variations in landrace of preference for ovipositing. Among the twelve Sarawak paddy landraces, Kanowit was more preferred by S. incertulas for ovipositing in comparison to other paddy landraces suggesting susceptibility towards the pest. Abaxial leaf surface was the preferred oviposition site. There was no clear antibiosis response of the paddy landraces towards S. incertulas larvae in this study.

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