Beauveria bassiana sensu lato granules for management of brown planthopper, Nilaparvata lugens in rice (original) (raw)
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International Journal of Science and Research Archive, 2021
The decrease in rice production can be caused by pests that can damage the quality and quantity. Pests that always attack rice plants are Brown planthopper. The BPH causes several effects, namely hopperburn, as a virus vector and can cause crop failure. The control of BPHs by farmers to date is by using synthetic pesticides. The use of synthetic pesticides can cause residues, resistance, resurgence, and the destruction of natural enemies. The use of synthetic insecticides can be minimized by using environmentally friendly and sustainable control alternatives, namely by using the local entomopathogenic fungi B. bassiana. This study aims to determine the effect of the application of local Riau B. bassiana on BPH and rice production.The research was conducted at the Laboratory of Plant Pests and Experimental Gardens, Faculty of Agriculture, Riau University from April to July 2020. The research was designed a completely randomized design with five treatments local entomopathogenic fungi...
Research Journal of Life Science
The objectives of this study were to evaluate the efficacy of MIPC to control the brown planthopper Nilaparvata lugens, one of the most damaging pests of rice in the field and determine the effect of various of its doses on the growth of the fungus B. bassiana. The research was carried out in a rice field and in the Biological Agents Development Laboratory, Department of Pests and Plant Diseases, Faculty of Agriculture, Brawijaya University, Indonesia. The field efficacy test of the MIPC insecticide was conducted by applying 0.5-, 1.0-, 1.5-, and 2.0-kg/ha doses. The insecticidal compatibility test of MIPC with B. bassiana was conducted in 0.5-, 1.0-, 1.5-, and 2.0-g/L doses of MIPC. Application of MIPC insecticide at 0.5-, 1.0-, 1.5-, and 2.0-kg/ha doses had no significant difference in reducing N. lugens population in the vegetative phase (28 to 70 days after planting). The MIPC doses of 1.0, 1.5, and 2.0 g/L were highly toxic or incompatible with the growth of B. bassiana. Meanwh...
Effectiveness of biopesticides against brown planthopper ( Nilaparvata lugens ) in paddy cultivation
Sustainable Chemistry and Pharmacy, 2018
The brown planthopper (BPH) causes serious damage to rice by sucking rice sap, ovipositing in rice tissues, and transmitting a number of rice diseases during its long-distance migration that severely affect the productivity of paddy. Thus, the aim of this study is to investigate the effectiveness of biopesticides against BPH population. BV500WS is used at the early stage of paddy cultivation for growth enhancement meanwhile BV612EC is used a week after the liberation of BPH for crop protection. Three conditions were adopted as follows which are T1 where the paddy was sprayed using BV500WS and BV612EC to study the effectiveness of both types of biopesticides, T2 where the paddy was sprayed using BV500WS only and C1 where the paddy was cultivated without any pesticide application as control. BPH was released twice on day 46 and 59 of paddy cultivation. Reduction of BPH population with up to 100% mortality rate was observed with the application of two types of biopesticides at T1 resulting in the highest number of remaining tillers with 68.56%. Although severely affected by BPH, T2 was able to has comparable number of remaining tillers as C1 which was 46.24% and 49.65% respectively. These results showed that two types of biopesticides were more effective in reducing BPH compared to one type of biopesticide.
1985
The locational preference of the brown planthopper (BPH) Nilaparvata lugens (Still) and the whitebacked plant hopper (WBPH) Sogatella furcifera (Horvath) was studied on rice cultivars IR22 and IR36 as an integral part of subsequent research on insect-fungal pathogen relationships. The BPH was observed to stay consistently on the basal portion while the WBPH showed a general preference for the upper portion regardless of varieties, rice growth stages and insect population density levels. The habitat preference of both species (BPH and WBPH) was found not to be affected by the presence of the other species when both species are present on the same host plant. Five rice cultivars with different reactions to BPH biotype 2 were used in the study on BPH-Rhizoctonia solani relationship: IR22 and TN1 (susceptible); Triveni and ASD7 (moderately resistant); and IR42 (resistant). Test plants were inoculated with R. solani (Kuhn) 3~4days after insect infestation. Sheath blight disease severity/...
Rice Brown Plant hopper, Nilaparvata lugens (Stal) (BPH) management strategy at present involves traditional approaches like, Using Resistant Varieties, Cultural Management and Use of Insecticides. Natural Biological Control is considered only in delaying insecticide application at favorable times and Use of Bio-Agents is non-existent. Varietal resistance could not achieve desired results due to inefficient and inadequate screening and breeding techniques presently employed to transfer highly complex multi-gene multi QTL based trait. This can possibly be improved by following traditional approach of screening and selecting plants directly under field conditions. Leaving alley-ways, optimum nitrogen application, optimum plant population are largely followed in many countries. New possibilities by changing the rice planting design can be experimented and exploited. Insecticide use is the major tactic followed in almost all the countries with inevitable consequences of natural enemy destruction and more importantly insecticide resistance development and pest resurgence. The scope of utilizing natural enemies as a major tactic appeared to be remote. Alien sources like lectins or Similar chemicals which can directly affect BPH, Alien organisms or the chemicals that disrupt the physiological base of Galbachina, Alien genes which can produce compounds related to insect molting hormones or juvenile hormones, in rice plants are the distant goals but worthy of initiation. After quantitative assessment of water vapor pressure and humidity on BPH, Chemicals interfering with water balance in BPH and even suitable dusts to mechanically disrupt insect body wall seem to have scope in future.
Journal of entomology and zoology studies, 2015
Present investigation was carried out to evaluate the relative efficacy of ecofriendly formulation of Beauveriabassiana (1.3×10 6conidia/ml), Potassium silicate (50mg/lit) and Imidacloprid (75ml/acre) for sustainable management of Cnaphalocrocis medinalis. During the treatments, percent mortality, population density and infestation was observed after first and second spray application at different time intervals i.e., 2*DAT, 5*DAT, 10*DAT, 15*DAT, 20*DAT. All the treatments significantly reduced population of Cnaphalocrocismedinaliscompared to control due to their specific mode of action. Mortality was maximum (61.91%) with combined application of Potassium silicate, B. bassiana and Imidacloprid after 20th day of application. Similarly population density and infestation was lowest after application of Potassium silicate, B. bassiana and Imidacloprid after 20 days interval. The above findings showed that these combinations can be successfully integrated in future IPM programs for Cna...
2020
Brown planthopper (Nilaparvata lugens Stall.) is the main pest of rice in several countries in the East and Southeast Asia regions. Banyumas Regency is one of the endemic areas for brown planthopper in Indonesia Entomopathogenic fungi have the potential to control brown planthopper naturally. The study aims to obtain entomopathogenic fungi isolates that effectively control Nilaparvata lugens. The study was conducted with exploratory studies to obtain fungal isolates, followed by experimental research. Exploration was carried out in seven sub-districts, five villages were taken for each sub-district, and five rice fields were taken for each village. The results of the exploration found 66 fungi isolated from infected brown planthopper. Exploration isolates of each sub-district were then tested on brown planthopper using RCBD with three replications on a plastic house scale. The variables observed were mortality and time of death of brown planthopper. Data were analyzed by 5% F test i...
Indian journal of entomology, 2022
Efficacy of a new combination insecticide against rice brown plant hopper (BPH) Nilaparvata lugens Stal revealed that among all the treatments, significant reduction in the incidence (76.91% reduction over control) and higher grain yield (5.37 ton/ ha) was obtained with buprofezin 24%+ fipronil 40%SC (MAIRM-10) @ 875 ml/ ha. It was at par with buprofezin 24%+ fipronil 40%SC (MAIRM-10) @ 750 ml/ ha followed by buprofezin 25%SC @ 800 ml/ ha. Although maximum grain yield was obtained from buprofezin 24%+ fipronil 40%SC (MAIRM-10) @ 875 ml/ ha, maximum cost benefit in term of ICBR was observed with buprofezin 24%+ fipronil 40%SC (MAIRM-10) @ 750 ml/ ha (1:6.11) besides considering the environmental effect. Buprofezin 24%+ fipronil 40%SC (MAIRM-10) @ 750 ml/ ha was found to be most optimum one for BPH management.
2014
Field experiment was conducted to evaluate the development and infection of B. bassiana on L. oratorius in rice + legume intercropping system. Field population of L. oratorius was significantly affected by B. bassiana application. Highest population at 7 DAS was recorded in the control treatment with 2.73 bugs per linear meter followed in the decreasing order of population number by 1 (1.0 x 10 P P conidia/ha), dose 2 (1.0 x 10 P P conidia/ha) and chemical insecticide (malathion, recommended rate) with 2.26; 1.39 and 1.15 bugs per linear meter. No significant differences were observed in field bug population as influenced by B. bassiana, 15 DAS. Population of L. oratorius as influenced by B. bassiana application at different rice-based cropping systems was not significant 7 DAS but significant at 15 DAS. Bug population was highest in untreated (control) monoculture rice with 3.48 bugs per linear meter. Lowest population of bugs in the field was observed in R+Bb and R+Pn+Mal treatmen...