scholarly journals The Effectiveness of Pyrethrum, Neem, Beauveria bassiana and Metarhizium anisopliae Against Brown Plant hopper (Nilaparvata lugens Stal.)

2019 ◽  
Vol 30 (1) ◽  
pp. 1
Author(s):  
Agus Kardinan ◽  
Tri Eko Wahyono ◽  
Nurbetti Tarigan
Keyword(s):  
Beauveria Bassiana ◽  
Metarhizium Anisopliae ◽  
Horizontal Transmission ◽  
Nilaparvata Lugens ◽  
Botanical Insecticides ◽  
Botanical Insecticide ◽  
Insecticide Application ◽  
Nilaparvata Lugens Stål ◽  
Brown Plant Hopper ◽  
Better Than

<p>Brown plant hopper (Nilaparvata lugens Stal) is the main pest on rice cultivation.  Synthetic insecticides application had negative impact to the human health and environment. The research objective was aimed to examine the effectiveness of botanical (pyrethrum and neem) and bio-insecticides (Beauveria bassiana/Bb and Metarhizium anisopliae/Ma) against brown plant hopper. Research was conducted at Entomology Laboratory of Indonesian Spices and Medicinal Crops Research Institute, Bogor in 2017. Trial consisted of two activities: the effectiveness of botanical and bio-insecticides to brown plant hopper mortality and horizontal transmission of bio-insecticides on brown plant hoppers. Botanical pesticide tested was (1) pyrethrum I (5 ml.l-1 water ), (2) pyrethrum II (5 ml.l-1 water), (3) neem I (20 ml.l-1 water), (4) neem II (20 ml.l-1 water), (5) synthetic insecticide (2 ml.l-1 water) and (6) control.  Bio-insecticide treatments were (1) Bb (spraying, 2.5 ml/plant), (2) Bb (granule, 5 g/pot), (3) Ma (spraying, 2.5 ml/plant), (4) Ma (granule, 5 g/ pot) and (5) control.  Treatments of horizontal transmission was the ratio of infected : healthy brown plant hopper 1 : 10; 2 : 10; 3 : 10 and 4 : 10. Botanical insecticides were prospective to suppressing brown plant hopper population of 85-87 % (pyrethrum) and   60-70 % (neem).   B.  bassiana was able  to   suppress   brown   plant     hopper population (18.2%), better than   M. anisopliae (5.6 %). Biological insecticide application by contact (spraying) was better than applied in granules form.  Botanical insecticide application showed no horizontal transmission from infected to healthy insect. Botanical insecticide (pyrethrum and neem) was more prospective than bio-insecticide (B. bassiana and M. anisopliae) in controlling brown plant hopper. </p>

scholarly journals Compatibility Between Beauveria bassiana (Bals.) and Neem Extract against Brown Plant-Hopper (Nilaparvata lugens Stal.)

2019 ◽  
Vol 4 (1) ◽  
pp. 9
Author(s):  
Nova Laili Wisuda ◽  
Tri Harjaka ◽  
Indah Dwi Prasetyaningrum
Keyword(s):  
Beauveria Bassiana ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Spore Density ◽  
Neem Extract ◽  
Randomized Design ◽  
Speed Up ◽  
Nilaparvata Lugens Stål ◽  
And Control

Beauveria bassiana fungi and neem extract as botanical insecticide can be combined to get the synergizing effect to control brown planthopper (BPH). This study was conducted to determine the best combination between the spore density of B. bassiana and concentration of neem extract to control BPH effectively. The two factorial treatment consisted concentration of B. bassiana (106  Colony Forming Unit (CFU) and 107 CFU) and concentration of neem extract (5%, 10%, 15%), and control.  The treatments were assigned in Completely Randomized Design with three replications. The data were analyzed using ANOVA and  LSD at 5%. The test was conducted in vitro and bio assay of testing insects, BPH, was conducted using dipping method.  B. bassiana was suitable with neem extract with T value ranged from 78.58- 90.38. The mortality of BPH occurred on day 5 after application. The highest mortality (91.67%) occurred on the treatment with B. bassiana 107 CFU + neem extract 10%. The shortest LT50 was found at the treatment of B. bassiana 106 CFU+  neem extract 15%  (2.74 days) but not significantly different from B. bassiana 107 CFU + neem extract 15% (2.76 days). B. bassiana spores combined with neem extract are assumed to speed up the mortality of BPH by increasing the concentration.

scholarly journals Effects of elevated CO2 on resistant and susceptible rice cultivar and its primary host, brown plant hopper (BPH), Nilaparvata lugens (Stal)

2020 ◽  
Author(s):  
Sengottayan Senthil-Nathan
Keyword(s):  
Elevated Co2 ◽  
Insect Pests ◽  
Rice Cultivar ◽  
Nilaparvata Lugens ◽  
Carbon Accumulation ◽  
Rice Cultivars ◽  
Ambient Conditions ◽  
Primary Host ◽  
Nilaparvata Lugens Stål ◽  
Brown Plant Hopper

Abstract Elevated CO2 has positive response on plant growth and negative response on insect pests. As a contemplation, the feeding pattern of the brown plant hopper, Nilaparvata lugens Stål on susceptible and resistant rice cultivars and their growth rates exposed to elevated CO2 conditions were analyzed. The elevated CO2 treatment showed significant differences in percentage of emergence and rice biomass that were consistent across the rice cultivars, when compared to the ambient conditions. Similarly, increase in carbon and nitrogen ratio of leaves and alterations in defensive peroxidase enzyme levels were observed, but was non-linear among the cultivars tested. Lower survivorship and nutritional indices of N. lugens were observed in conditions of elevated CO2 levels over ambient conditions. Results were nonlinear in manner. We conclude that the plant carbon accumulation increased due to elevated CO2, causing physiological changes that decreased nitrogen content. Similarly, elevated CO2 increased insect feeding, but did not alter other variables such as their biology or reproduction.

Prediction and characterization of novel microRNAs from brown plant hopper,Nilaparvata lugens(Stål) (Hemiptera: Delphacidae)

2013 ◽  
Vol 43 (4) ◽  
pp. 224-235 ◽  
Author(s):  
R. Asokan ◽  
K.B. Rebijith ◽  
H.H. Ranjitha ◽  
H.K. Roopa ◽  
V.V. Ramamurthy
Keyword(s):  
Nilaparvata Lugens ◽  
Nilaparvata Lugens Stål ◽  
Brown Plant Hopper
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