Interactions between the striped stem borer Chilo suppressalis (Walk.) (Lep., Pyralidae) larvae and rice plants in response to nitrogen fertilization

2003 ◽  
Vol 76 (5) ◽  
pp. 124-128 ◽  
Author(s):  
M. X. Jiang ◽  
J. A. Cheng
Keyword(s):  
Nitrogen Fertilization ◽  
Stem Borer ◽  
Chilo Suppressalis ◽  
Rice Plants

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 Bt rice plants may protect neighbouring non- Bt rice plants against the striped stem borer, Chilo suppressalis

2018 ◽  
Vol 285 (1883) ◽  
pp. 20181283 ◽  
Author(s):  
Yaoyu Jiao ◽  
Xiaoyun Hu ◽  
Yufa Peng ◽  
Kongming Wu ◽  
Jörg Romeis ◽  
...  
Keyword(s):  
Field Experiments ◽  
Management Strategies ◽  
Oviposition Preference ◽  
Stem Borer ◽  
Genetically Engineered ◽  
Chilo Suppressalis ◽  
Trap Crop ◽  
Insect Management ◽  
Bt Rice ◽  
Rice Plants

The area planted with insect-resistant genetically engineered crops expressing Bacillus thuringiensis ( Bt ) genes has greatly increased in many areas of the world. Given the nearby presence of non- Bt crops (including those planted as refuges) and non-crop habitats, pests targeted by the Bt trait have a choice between Bt and non- Bt crops or weeds, and their host preference may greatly affect insect management and management of pest resistance to Bt proteins. In this study, we examined the oviposition preference of the target pest of Bt rice, Chilo suppressalis , for Bt versus non- Bt rice plants as influenced by previous damage caused by C. suppressalis larvae. The results showed that C. suppressalis females had no oviposition preference for undamaged Bt or non- Bt plants but were repelled by conspecific-damaged plants whether Bt or non- Bt . Consequently, C. suppressalis egg masses were more numerous on Bt plants than on neighbouring non- Bt plants both in greenhouse and in field experiments due to the significantly greater caterpillar damage on non- Bt plants. We also found evidence of poorer performance of C. suppressalis larvae on conspecific-damaged rice plants when compared with undamaged plants. GC-MS analyses showed that larval damage induced the release of volatiles that repelled mated C. suppressalis females in wind tunnel experiments . These findings suggest that Bt rice could act as a dead-end trap crop for C. suppressalis and thereby protect adjacent non- Bt rice plants. The results also indicate that the oviposition behaviour of target pest females should be considered in the development of Bt resistance management strategies.

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