Abstract Jajar legowo (Jarwo) is a rice planting system that widely practiced by farmers, but information regarding its effects on pests and natural enemies limited. This study aimed to identify how the Jarwo affects population damage intensity of yellow stem borer ( Scirpophaga incertulas ) predators. The research was conducted in Wonosari-Klaten, Central Java, during dry season 2020. 2:1 used...

With the widespread adoption of high yielding rice (Oryza sativa L.) varieties and accompanying changes in cultural practices, leaf folder [Cnaphalocrocis medinalis (Guenee)] yellow stem borer [Scirpophaga incertulas (Walker)] has attained status major pests influence yield if proper timely management practices are not adopted. For effective these pests, identification new molecules with novel ...

Over 2,600 transgenic rice plants in nine strains were regenerated from >500 independently selected hygromycin-resistant calli after Agrobacterium-mediated transformation. The plants were transformed with fully modified (plant codon optimized) versions of two synthetic cryIA(b) and cryIA(c) coding sequences from Bacillus thuringiensis as well as the hph and gus genes, coding for hygromycin phos...

Rice (Oryza sativa L.,) plants release a complex profile of volatile organic compounds. Present study investigates the differences in compounds from four rice landraces viz., Karuthakar, Norungan, Thavala Kanan and Varappu Kudaichan each under conditions like healthy, mechanically damaged, ones infested by brown plant hopper Nilaparvata lugens Stal yellow stem borer Scirpophaga incertulas (Wlk....

Yellow stem borer, Scirpophaga incertulas (Walker) is monophagous insect pest causing serious damage to rice growers of plain regions Nepal. This study was done evaluate the host preference yellow borer various genotypes rice. The research design employed Randomized Complete Block Design (RCBD) with seven treatments and three replications in kharif season 2021. Rice varieties selected were Sabi...

Two species of Trichogramma wasps were assessed for their effectiveness against yellow stem borer Scirpophaga incertulas. A laboratory cage test with T. japonicum and T. chilonis showed that both species parasitized yellow stem borer egg masses at 60.0% ± 9.13% and 40.7% ± 7.11%, respectively, with egg parasitism rates of 15.8% ± 22.2% for T. japonicum and 2.8% ± 5.0% for T. chilonis. Once the ...

As pests are an important factor in reducing crop yields, pest control is measure preventing reductions yields. With the aim of ending use chemical pesticides, biological and genetically modified methods now considered more reasonable strategies. The bacterium Bacillus thuringiensis (Bt) can produce crystal proteins that have specific toxicity to lepidopteran insects, so it has been applied as ...