scholarly journals Efficacy of three botanicals and a microbial derivatives acaricide (Abamectin) on the control of jute yellow mite, Polyphagotarsonemus latus (Bank)

2016 ◽  
Vol 14 (1) ◽  
pp. 1-6
Author(s):  
A Rahman ◽  
KS Islam ◽  
M Jahan ◽  
N Islam
Keyword(s):  
Environmental Safety ◽  
Mite Infestation ◽  
Neem Oil ◽  
Polyphagotarsonemus Latus ◽  
Infested Plant ◽  
Field Laboratory ◽  
Highly Effective ◽  
Karanja Oil ◽  
Experimental Plots ◽  
Reduced Risk

Three botanical oils and of microbial derivatives an acaricide (Abamectin) were evaluated for their efficacy in controlling yellow mite Polyphagotarsonemus latus in the field laboratory of Entomology, Bangladesh Agricultural University, Mymensingh. The selected botanical oils viz. Neem oil, Mahogany oil and Karanja oil and the acaricide Ambush 1.8 EC were tested against jute yellow mite on standing jute plants of the experimental plots and assessed for their effect on the basis of population of the pest at 24, 48 and 72 hours after treatment and the reduction of yellow mite infested plant after 7 and 10 days of spraying. The acaricide Ambush 1.8 EC was highly effective showing reduction of 80.25% mite infested plant. Among the botanicals, Neem oil and Mahogany oil showed better efficacy and caused 60.55 % and 55.89 % reduction of mite infestation. Karanja oil was not found promising in controlling yellow mite of jute. Considering the effectiveness against the mite pest as well as the environmental safety, use of Neem and Mahogany oil and also the reduced risk acaricide, Ambush 1.8 EC might be suggested in the IPM of yellow mite.J. Bangladesh Agril. Univ. 14(1): 1-6, June 2016

scholarly journals Bio-efficacy of Mineral Oil against Yellow Mite in Dark Jute (Corchorus olitorius L.) under Terai Region of West Bengal

2020 ◽  
pp. 77-82
Author(s):  
Prahlad Sarkar ◽  
Srima Das ◽  
Shyamal Kheroar ◽  
Avijit Kundu ◽  
Swapan Kumar Barman ◽  
...  
Keyword(s):  
Block Design ◽  
Environmental Safety ◽  
Mineral Oil ◽  
Post Treatment ◽  
Neem Oil ◽  
Polyphagotarsonemus Latus ◽  
Randomized Block Design ◽  
Cropping Season ◽  
Effective Combination ◽  
Treatment Observation

An experiment was conducted during pre-kharif season of 2016 and 2017 to determine the efficacy of relatively cheaper, safer horticultural mineral oil on yellow mite (Polyphagotarsonemus latus). The experiment was laid out in randomized block design with seven treatments [T1- mineral oil @ 3 ml/litre at 35 and 50 days after sowing, T2- mineral oil @ 6 ml/litre at 35 and 50 DAS, T3- mineral oil @ 9 ml/litre at 35 and 50 DAS, T4-Neem oil @ 3 ml/litre at 35 and 50 DAS, T5- mineral oil @ 3 ml/litre + neem oil @ 3 ml/litre at 35 and 50 DAS and T6- Control] replicated four times. Two scheduled spraying of each treatment was done on standing jute crop at 15 days interval. The effect of treatments was significant on post treatment mite population recorded after spray for both the cropping season. Among the treatments, T5 was found to be the most effective combination. The post treatment observation during 2016 and 2017 at 7 days after treatment indicated significantly less number of mites i.e. (1.08 and 0.84 mites cm-2) and (0.83 and 0.41 mites cm-2) respectively in the treatment T5. Within the treatments, maximum plant height (216.92 and 206.64 cm) and yield (34.68 and 28.28 q ha-1) were also observed in treatment T5. Considering the effectiveness against mite on jute as well as the environmental safety, mineral oil might be suggested as biorational component of IPM for effective management of yellow mite.

scholarly journals Biorational management of okra jassid (Amrasca devastans)

2018 ◽  
Vol 29 (3) ◽  
pp. 205-212
Author(s):  
M Akramuzzaman ◽  
MM Uddin ◽  
KS Islam
Keyword(s):  
Beauveria Bassiana ◽  
Management Strategy ◽  
Control Treatment ◽  
Adult Plant ◽  
Neem Oil ◽  
Comparative Efficacy ◽  
Emamectin Benzoate ◽  
Field Laboratory ◽  
The Mean ◽  
Karanja Oil

An experiment was carried out to appraise the comparative efficacy of some biorationals against okra jassid at the Field Laboratory, Department of Entomology, Bangladesh Agricultural University, Mymensingh during January to June 2016. The experiment was accomplished using three botanical oils (Neem oil@ 2ml/L, Mahogany oil @2ml/L & Karanja oil @2ml/L) and four microbial insecticides (Spinosad @ 1ml/ L, Beauveria bassiana @ 1 g/ L, Buprofezin @ 2ml/L, Emamectin benzoate @ 1g/L) along with control. Among various biorationals the mean number of nymph plant-1 varied significantly (p<0.01, p<0.05) after 1st, 2nd and 3rd spray. After 1st and 2nd spray, Beauveria showed the best results both at 3 DAT (0.00 & 2.33, respectively) while after 3rd spray Mahogany (0.00) performed best at 3 DAT compared to other treatments including control (4.00). In number of adult plant-1 effectiveness was reflected on Neem (0.66) among various biorationals at 3 DAT after 2nd spray. Similarly, at 5 and 7 DAT, the lowest number of adult was observed at Emamectin (1.66, 1.00), respectively. It revealed that Neem and Emamectin had strong efficacy in controlling okra jassid in comparison to their control (7.33, 11.33), respectively. After 3rd spray, the efficacy of different bioratioanls in managing okra jassid was significant (p<0.01). The Buprofezin showed the best performance both at 3 and 5 DAT (0.66 & 1.66, respectively). Similarly, the number of curled leaf plant-1 varied significantly (p<0.05, p<0.01) after both 1st 2nd and 3rd spray than the control. The lowest number of curled leaf plant-1 was observed in Neem (0.66) treated plants at 3 DAT after 2nd spray. This data revealed that the Neem had strong effect on okra jassid management. The number of curled leaf plot-1 also varied significantly (p<0.01) after 2nd and 3rd spray than the control. The highest infestation was always found in control treatment. The results indicated that Beauveria bassiana had strong efficacy in controlling okra jassid followed by Neem oil, Buprofezin and Emamectin benzoate in comparison to control. Therefore, it might be concluded that these biorational insecticides could be used as eco-friendly management strategy for okra jassid and can be incorporated in developing IPM programme for jassid. Progressive Agriculture 29 (3): 205-212, 2018

Pongamia oil soap for the management of chilli mite, Polyphagotarsonemus latus Banks and its impact on spider population

ENTOMON ◽  
2021 ◽  
Vol 46 (1) ◽  
pp. 69-72
Author(s):  
K. V. Veena Krishnan ◽  
K. M. Sreekumar
Keyword(s):  
Field Experiment ◽  
Neem Oil ◽  
Polyphagotarsonemus Latus ◽  
Pongamia Oil

Field experiment was conducted to check the efficacy of the pongamia oil soap along with Spiromesifen and Neem oil soap at different concentrations in controlling chilli mite, Polyphagotarsonemus latus and its impact on spider population. Spiromesifen was found effective against chilli mite and showed persistent action in the field, whereas pongamia oil soap reported an immediate control over the pest but its effectiveness declined with time and concentration. Among the botanicals, 3% pongamia oil soap was found effective and was followed by the 2% pongamia oil soap. Pongamia oil soap proved effective against mite up to seven days after the treatment and the effect declined by 14 days after the spray. The botanicals as well as the chemical spiromesifen were found safe to spiders in the field.

scholarly journals Residual effect of two insecticides and neem oil against epilachna beetle, Epilachna vigintioctopunctata (Fab.) on bitter gourd

2012 ◽  
Vol 10 (1) ◽  
pp. 21-25
Author(s):  
M Mala ◽  
M M U Islam ◽  
K S Islam
Keyword(s):  
Laboratory Condition ◽  
Field Condition ◽  
Residual Effect ◽  
Bitter Gourd ◽  
Neem Oil ◽  
Botanical Pesticide ◽  
First Instar ◽  
Field Laboratory ◽  
Epilachna Vigintioctopunctata

Experiments were conducted in the Laboratory and Entomology Field Laboratory to determine the residual effect of two insecticides (viz. Siperin 10EC, Malathion 57EC) and a botanical (Neem oil) against Epilachna beetle, Epilachna vigintioctopunctata (Fab.) during the period from February to May 2009. To evaluate the residual effect of one synthetic and one organophosphors pesticides and one botanical pesticide on the mortality of Epilachna beetle, different concentrations of the insecticides (1.0, 2.0 and 3.0% of Neem oil, 1.0, 1.2 and 1.5% of Malathion and 0.5, 1.0 and 1.5% of Siperin.) was used. The mortality of the beetles was recorded at 4, 5, 6 and 7 days after treatments. After 7 days the highest mortality was found on first instar larvae (70.0 in laboratory condition and 65.0 in field condition) treated by Siperin 10EC (1.5% conc.) and the lowest mortality was found on adults Epilachna beetle (17.5 in laboratory condition and 15.0 in field condition) treated by Neem oil (1.0% conc.) The results indicated that Siperin 10EC has longer residual effect than Malathion 57EC and Neem oil. The effectivity ranked: Siperin > Malathion > Neem oil. DOI: http://dx.doi.org/10.3329/jbau.v10i1.12034 J. Bangladesh Agril. Univ. 10(1): 21–25, 2012  

scholarly journals Control Strategies of Papaya Mealybug, Paracoccus marginatus Williams and Willink in the Laboratory Condition

2015 ◽  
Vol 3 (4) ◽  
pp. 687-691 ◽  
Author(s):  
M.J.H. Biswas ◽  
M.A.M. Khan ◽  
K.S. Ahmed
Keyword(s):  
Laboratory Experiment ◽  
Laboratory Condition ◽  
Control Strategies ◽  
Adalia Bipunctata ◽  
Neem Oil ◽  
Ladybird Beetles ◽  
Karanja Oil ◽  
Coccinella Transversalis ◽  
Micraspis Discolor ◽  
Significant Mortality

The laboratory experiment was conducted at the laboratory of the Department of Entomology, Bangladesh Agricultural University to determine the effectiveness of polythene band, predatory ladybird beetles (available species found in Bangladesh viz. Coccinella transversalis (F.), Micraspis discolor (F.), Menochilus sexmaculatus (F.), Cyclonida sanguinea, Adalia bipunctata, Coccinella novemnotata and Illeis koebelei), four chemical insecticides and three botanical oils in controlling papaya mealybug, Paracoccus marginatus Williams and Granara de Willink. The chemical insecticides were Sevin 85 SP, Dimethoate 40 EC, Fipronil 50 EC, Deltamethrin 2.5 EC, and the botanical oils were Neem oil, Mahogany oil and Karanja oil. In the laboratory experiment, polythene banding failed to prevent the plant from the infestation of papaya mealybug. Seven commonly available species of ladybird beetles in Bangladesh did not provide any control to papaya mealybug. Among the chemical insecticides, Sevin 85 SP and Dimethoate 40 EC showed significant mortality of papaya mealybug. Deltamethrin 2.5 EC and Neem oil (2%) provided moderate control of the pest. The remaining insecticides and botanical oils were less effective to control papaya mealybug. Int J Appl Sci Biotechnol, Vol 3(4): 687-691

scholarly journals Management of Mango Hopper,Idioscopus clypealis,Using Chemical Insecticides and Neem Oil

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
S. M. Adnan ◽  
M. M. Uddin ◽  
M. J. Alam ◽  
M. S. Islam ◽  
M. A. Kashem ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Neem Oil ◽  
Field Laboratory ◽  
Significant Difference

An experiment was conducted in Field Laboratory, Department of Entomology at Bangladesh Agricultural University, Mymensingh, during 2013 to manage the mango hopper,Idioscopus clypealisL, using three chemical insecticides, Imidacloprid (0.3%), Endosulfan (0.5%), and Cypermethrin (0.4%), and natural Neem oil (3%) with three replications of each. All the treatments were significantly effective in managing mango hopper in comparison to the control. Imidacloprid showed the highest efficacy in percentage of reduction of hopper population (92.50 ± 9.02) at 72 hours after treatment in case of 2nd spray. It also showed the highest overall percentage of reduction (88.59 ± 8.64) of hopper population and less toxicity to natural enemies including green ant, spider, and lacewing of mango hopper. In case of biopesticide, azadirachtin based Neem oil was found effective against mango hopper as 48.35, 60.15, and 56.54% reduction after 24, 72, and 168 hours of spraying, respectively, which was comparable with Cypermethrin as there was no statistically significant difference after 168 hours of spray. Natural enemies were also higher after 1st and 2nd spray in case of Neem oil.

scholarly journals Evaluation of different modules for the management of tomato fruit borer, Helicoverpa armigera pest of tomato

2015 ◽  
Vol 7 (1) ◽  
pp. 155-158
Author(s):  
B. L. Jakhar ◽  
Suman Suman
Keyword(s):  
Helicoverpa Armigera ◽  
Tomato Fruit ◽  
Neem Oil ◽  
Tomato Yield ◽  
First Instar ◽  
Highly Effective ◽  
Helicoverpa Armígera ◽  
Fruit Borer ◽  
African Marigold

Among, six modules tested against Helicoverpa armigera on tomato, the IPM module I consisting interspersing of 1 row of african marigold after every 8 rows of tomato as well as on the periphery of the plot and spray of neem based formulation gromin 1 % EC @ 0.5 ml /l on appearance of the first instar larvae.IPM module II was interspersing of 1 row of african marigold after every 8 rows of tomato as well as on the periphery of the plot spray of neem based formulation gromin 1 % EC @ 0.5 ml /l on appearance of the first instar larvae and two spray of HaNPV @ 350 LE/ha alternated with neem oil @ 0.5 % + 0.1 % soap solution.IPM module III consisting interspersing of 1 row of african marigold after every 8 rows of tomato as well as on the periphery of the plot and two spray of Beauvaria basiana @ 40g/10 l at appearance of first instar larvae alternated with Nikuchhi @ 1.0 %. and IPM module IV are growing of african marigold after every 8 rows of tomato as well as on the periphery of the plot and two spray of HaNPV @ 350 LE/ha on appearance of first instar larvae followed by spray of Decidan 32.8% EC @ 15ml/10 litre. The IPM module V was alternate spray of Polytrin c 44 % EC @ 10ml/10 litre on appearance of first instar larvae and subsequent spray at 15 days intervals and Module VI was Control. IPM-IV module was found highly effective and economical for management of tomato fruit borer, Helicoverpa armigera and it exhibited least tomato fruit borer damage (3.44%) and maximum tomato yield (257.25q/ha). This research gave the best result to farmers for the control of H. armigera in tomato crops.

scholarly journals Biorational Management of Pulse Bettle (Callosobruchus chinensis L.) on Chickpea Seeds

2021 ◽  
pp. 7-14
Author(s):  
Arafat Hasan ◽  
Mehedi Hasan ◽  
Keya Akter ◽  
Sonia Sultana ◽  
Tasnia Ummul Wara ◽  
...  
Keyword(s):  
Weight Loss ◽  
Weight Reduction ◽  
Seed Weight ◽  
Direct Method ◽  
Insect Pest ◽  
Storage Condition ◽  
Callosobruchus Chinensis ◽  
Neem Oil ◽  
Pulse Beetle ◽  
Karanja Oil

The pulse beetle, Callosobruchus chinensis is one of the major insect pest in stored pulse (i.e. Chickpea seeds) causing 40-50% losses of pulses in storage. Experiments were conducted to study the efficacy of some selected biorational insecticides on mortality of beetle, weight loss of seeds, fecundity and hatchability of pulse beetle, Callosobruchus chinensis under laboratory condition. Among the different botanicals, Neem oil (89.00%) was found the most effective in case of mortality of pulse beetle in direct method followed by Mahogany oil (78.00%) and Karanja oil (62.00%). Among different microbial derivatives, Spinosad was found most effective considering mortality followed by Emamectin benzoate and Abamectin. Among botanicals the highest percentage of weight reduction was observed in Karanja oil (30.18%) and the lowest (22.43%) was in Neem oil while among microbial derivatives the lowest percentage of seed weight reduction was obtained from Spinosad (11.15%) and the highest percentage of weight reduction was obtained from Abamectin (20.37%). No. of eggs laid per female was recorded highest in Karanja oil (24.00) and lowest in Spinosad (19.33). The hatchability percentage was highest in Karanza oil (21.73%) and lowest in Neem (12.89%) and in case of chemical treatment lowest in spinosad (6.05%) and highest in Ebamectin (14.42%). Neem oil and Spinosad were found effective against pulse beetle in storage condition. Therefore, Neem oil and Spinosad might be included in the development of IPM packages for the management of pulse beetle in the storage.

scholarly journals United Forces of Botanical Oils: Efficacy of Neem and Karanja Oil against Colorado Potato Beetle under Laboratory Conditions

Plants ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 608 ◽  
Author(s):  
Kateřina Kovaříková ◽  
Roman Pavela
Keyword(s):  
Czech Republic ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Crop Protection ◽  
Botanical Insecticides ◽  
Neem Oil ◽  
Potato Beetle ◽  
Karanja Oil ◽  
First Time ◽  
Dose Dependent

Neem and karanja oil are the most promising botanical insecticides in crop protection nowadays. Given that information about the insecticidal abilities of these oils is lacking, the aim was to explore the effects of neem and karanja oil binary mixtures. The insecticidal activity of NeemAzal T/S (Trifolio-M GmbH, Lahnau, Germany) (neem oil), Rock Effect (Agro CS a.s., Česká Skalice, Czech Republic) (karanja oil), and their binary mixes (at 1:1, 1:2, and 2:1 volume ratios) against the larvae of the Colorado potato beetle (CPB; Leptinotarsa decemlineata) was studied. In our bioassays, a synergistic effect of the mixtures, which was dose-dependent, was observed for the first time against this pest. The most effective blend was the 1:1 ratio. Its efficacy was more or less the same as, or even greater than, the neem oil alone. The LC50 of neem oil two days after application was (0.075 g·L−1) and the LC50 of the mixture was (0.065 g·L−1). The LC50 of karanja oil was (0.582 g·L−1), which was much higher than the LC50 of neem oil. The LC90 of neem oil five days after application was (0.105 g·L−1) and the LC90 of the mixture was (0.037 g·L−1). The LC90 of karanja oil was (1.032 g·L−1). The results demonstrate that it is possible to lower the doses of both oils and get improved efficacy against CPB larvae; nevertheless, further verification of the results in field conditions is necessary.

scholarly journals Biorational Management of Pulse Beetle (Callosobruchus chinensis L.) in Gram Seed

2020 ◽  
pp. 14-22
Author(s):  
Md. Al-Mehedi Hasan ◽  
Sonia Sultana ◽  
Keya Akter ◽  
Tasnia Ummul Wara ◽  
Mehedi Hasan ◽  
...  
Keyword(s):  
Weight Reduction ◽  
Direct Method ◽  
Adult Longevity ◽  
Callosobruchus Chinensis ◽  
Larval Duration ◽  
Neem Oil ◽  
Pupal Period ◽  
Pulse Beetle ◽  
Percent Mortality ◽  
Karanja Oil

The pulse beetle, Callosobruchus chinensis is one of the major pests in stored pulse causes 40-50% losses of pulses in storage. Experiments were conducted to study the efficacy of some selected biorational insecticides on percent mortality of beetle, percent weight loss of seeds, no. of eggs laid per female, percent hatchability, larval duration, pupal period and adult longevity of pulse beetle, Callosobruchus chinensis under laboratory condition. Among the different botanicals, neem oil (77%) was found the most effective showing 78% mortality of pulse beetle in direct method followed by Mahogany oil (69%) and karanja oil (62%). In case of indirect method, the highest percent mortality was recorded from karanja oil (37%) which was followed by Neem oil (33%) and Mahogany oil (33%). Among different microbial derivatives, Libsen was found most effective considering mortality followed by Suspend 5SG and Ambush 1.8EC. The highest percentage of weight reduction was observed in Karanja oil (15%) and the lowest (14%) was in Mahogany oil. The highest percentage of weight reduction was obtained from Ambush 1.8EC (16%) and the lowest percentage of weight reduction was obtained from Suspend 5SG (13%). No. of eggs laid per female was the highest in mahogany oil (24) and lowest in Libsen (19).  Percent of hatchability was highest in mahogany oil (21%) and lowest in Libsen (16%). Larval duration was the highest in mahogany oil (16 days) and the lowest was in Suspend 5SG(13days). Pupal period highest in neem oil (7 days) and the lowest was in (6 days). The highest adult longevity (22 days) from the seeds treated with karanja oil. The lowest adult longevity (18 days) from seeds treated with Libson. Thus, Karanja, Neem and Mahogany oil, Libsen, Ambush 1.8EC and Suspend 5SG were found effective against pulse beetle in storage. Therefore, these biorationals might be included in the development of IPM packages for the management of pulse beetle in the storage.

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