scholarly journals The Effectiveness of Lemongrass Oil Against Brown planthopper Nilaparvata lugens Stal. (Hemiptera: Delphacidae) on Rice Plant

2021 ◽  
Vol 2 (1) ◽  
pp. 14-18
Author(s):  
Toto Himawan ◽  
Rina Rachmawati ◽  
Eka Putri Rifandani
Keyword(s):  
Rice Plant ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Food Crop ◽  
Lc50 Value ◽  
Plant Pests ◽  
The World ◽  
Lemongrass Oil ◽  
Natural Pesticides ◽  
Nilaparvata Lugens Stål

Rice (Oryza sativa) is the primary food crop in the world. The use of natural pesticides made from essential plants has begun to be developed because it is useful in controlling some plant pests. This study aimed to investigate lemongrass oil's effectiveness in controlling brown planthopper pests in rice plants. This study consist of five concentrations using lemongrass oil and sterile distilled water as control was repeated three times. The highest mortality of brown planthopper was found at 1.6% concentration (100%), while the lowest mortality was 0.1% concentration (26.66%). The lemongrass oil can be used to control brown planthoppers because of the LC50 value at a concentration of 8233.34 ppm (0.8%) and LT50 at 6 HAT.

scholarly journals Fluktuasi Populasi Serangga Wereng Batang Coklat (Nilaparvata lugens) Pada Lahan Sawah Di Kabupaten Kerawang Jawa Barat

Agrologia ◽  
2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Martua Suhunan Sianipar
Keyword(s):  
Regression Analysis ◽  
Natural Enemy ◽  
Diversity Index ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Population Fluctuation ◽  
Plant Pests ◽  
Nilaparvata Lugens Stål ◽  
Experimental Plots

Brown Planthopper (Nilaparvata lugens Stal.) is a main pest of paddy. The purpose of this research is to study the population of Brown Planthopper and the natural enemy. The method of this research using survey. Survey was conducted in three experimental plots at JatisariSubdistrict, Karawang District, West Javaand in the greenhouse of the Department of Plant Pests and Deseases, Faculty of Agriculture,  Universitas Padjadjaran. The sample were collected by systematically diagonal using yellow stiky trap and manually or visual counting. The result showed population fluctuation BPH below the economy line where is temperature, humidity and rainfall did not significantly effect to the BPH population. It was indicated by the regression analysis of each temperature Y= (- 24.225 + 1.008 X1 ; R2 =0,020; P/Sign = 0.660),  Humidity  (Y=- 32.337 + 0.424 X2; R2  = 0,124; P/ Sign  = 0.261) and Rainfall (Y=1.707 + 0.090 X3 ; R2  = 0.050; P/ Sign = 0.487). There is a relation between temperature, humidity and rainfall to BPH (Y = - 123 + 2.685 T + 0.649 RH - 0.14 CH; R2 = 0.236; P/ Sign = 0.516) dit not significantly because as the value of significance (P = Sign)  > 0.05.8. The diversity index was moderate 1.88

scholarly journals Effect of Anredera cordifolia (Ten) Steenis Leaves Ethanol Extract in suppressing Brown PlantHopper (Nilaparvata lugens Stal.) Populations on Rice Plant

2020 ◽  
Vol 3 (2) ◽  
pp. 42
Author(s):  
Martua Suhunan Sianipar ◽  
Tarkus Suganda ◽  
Azhhar Hadyarrahman
Keyword(s):  
Rice Plant ◽  
Block Design ◽  
Brown Planthopper ◽  
Ethanol Extract ◽  
Nilaparvata Lugens ◽  
Botanical Insecticide ◽  
Crop Failure ◽  
Extract Concentration ◽  
Randomized Block Design ◽  
Nilaparvata Lugens Stål

The Brown Planthopper (Nilaparvata lugens Stal.) is one of the pests that often causes rice crop failure in rice. One way to control N. lugens pests is to use of botanical insecticide. The purpose of this experiment is to study the effect of A. cordifolia leaves ethanol in suppressing N. lugens populations. The experiment used a Randomized Block Design (RDB) with 8 treatments and 4 replications. The A. cordifolia leaves ethanol extract concentration tested in this experiment consisted of 0,5%; 0,75%; 1%; 1,5%; and 2%.  The results of the experiment showed that the ethanol extract of binahong leaves with a concentration of 1%, 1.5% and 2% cause mortality of N. lugens by 52.50%, 56.25%, and 61.25% on the 14th day after application. Based on the results of this experiment, the ethanol extract of A.cordifolia leaves was not effective against N. lugen.

scholarly journals A Review on Brown Planthopper (Nilaparvata lugens Stål), a Major Pest of Rice in Asia and Pacific

2021 ◽  
pp. 7-19
Author(s):  
Kari Iamba ◽  
Danar Dono
Keyword(s):  
Insect Pests ◽  
Oryza Sativa L ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Control Measures ◽  
Asia Pacific ◽  
Effective Control ◽  
Rice Plants ◽  
The World ◽  
Nilaparvata Lugens Stål

Rice (Oryza sativa L.) is the most important staple food in the world including Asia and Pacific. Millions of people around the world depend on rice due to the high calories and economic returns it provides. More than 100 species of insects including 20 economic pests are capable of causing notable damage to rice plants. Insect pests continue to pose threat to rice farming since rice plants serve as their host plants. Pests are major constraints to rice production and coexist with rice growth. Information on pest economic importance, description, biology, distribution, economic threshold level, population dynamics, monitoring and forecasting is a prerequisite. This review is focused on brown planthopper (Nilaparvata lugens Stål) which is an important economic rice pest that are prevalent in tropical rice growing regions. Brown planthopper (BPH) is a serious pest of rice and has tremendous impact especially in Asia-Pacific region. Understanding the biology and ecology of this pest will enhance the designing, formulation and utilization of effective control measures. The control strategies as stipulated by integrated pest management (IPM) should be eco-friendly with minimum use of synthetic pesticides while boosting the activities of natural enemies and other biological control agents. The control measures discussed in this paper are oriented towards the cultural and biological aspects of managing the pest.

scholarly journals Behavioral changes in the brown planthopper, Nilaparvata lugens, mediated by melatonin

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Longqing Shi ◽  
Junian Zhang ◽  
Liangmiao Qiu ◽  
Zhaowei Jiang ◽  
Zhenxing Xie ◽  
...  
Keyword(s):  
Rice Plant ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Behavioral Changes ◽  
The Other ◽  
Melatonin Receptor ◽  
Melatonin Treatment ◽  
Locomotor Pattern ◽  
Locomotor Activities ◽  
Locomotor Behaviors

Abstract Background Melatonin has been proved to exist and play importance roles in rice plant, such as biosynthesis and resistance. However, little is known about the function of melatonin in its monophagous pest, the brown planthopper. Methods In this study, we examined the effects of melatonin on the copulatory and locomotor behaviors of brachypterous and macropterous adult planthoppers by exposing them to melatonin, luzindole (a melatonin receptor antagonist), or a combination of melatonin and luzindole. Results A total of 68.7% of copulation events occurred at night in the control, while 31.2% occurred at night in the melatonin treatment, which led to a decrease in offspring. Brachypterous males were involved in mating events in the melatonin treatment but not in the other two treatments or the control. The daily locomotor pattern in the melatonin treatment was markedly different from that in the luzindole and melatonin and luzindole treatments. The total locomotor activities of the macropterous and brachypterous males exposed with melatonin were suppressed compared to those in the control. Melatonin significantly decreased the daytime and nighttime locomotor activities of macropterous females. In comparison, the activity of brachypterous females decreased slightly in the daytime but was more than double that of the control females at night. Conclusions Our results reveal that melatonin plays a role in the behaviors of brown planthoppers.

scholarly journals Heat Stress Impedes Development and Lowers Fecundity of the Brown Planthopper Nilaparvata lugens (Stål)

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e47413 ◽  
Author(s):  
Jiranan Piyaphongkul ◽  
Jeremy Pritchard ◽  
Jeff Bale
Keyword(s):  
Heat Stress ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Nilaparvata Lugens Stål
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