Toxicity of biopesticides against tomato fruit borer helicoverpa armigera (Hubn.)

2020 ◽  
Vol 82 (4) ◽  
pp. 750-755
Author(s):  
Geet Gandhi ◽  
P C Sharma ◽  
Nitika Negi
Keyword(s):  
Helicoverpa Armigera ◽  
Tomato Fruit ◽  
Helicoverpa Armígera ◽  
Fruit Borer

scholarly journals COMPARATIVE EFFICACY OF FOUR INSECTICIDES AGAINST AMERICAN BOLLWORM (Helicoverpa armigera) UNDER FIELD CONDITIONS

2020 ◽  
pp. 191-194
Author(s):  
Ahmad Nawaz Sipra
Keyword(s):  
Helicoverpa Armigera ◽  
Block Design ◽  
Tomato Fruit ◽  
Field Conditions ◽  
Large Area ◽  
Experimental Conditions ◽  
Solanum Lycopersicum L ◽  
American Bollworm ◽  
Helicoverpa Armígera ◽  
Fruit Borer

The tomato, Solanum lycopersicum L., is the 2nd major crop which is widely grown on the large area of Pakistan. This crop is affected by the fruit borer, Helicoverpa armigera (Hubner). Although some predators and parasitoids have been recorded in the field for their natural control, their manipulation to a successful crop management is still awaited. The present study was planned to evaluate the toxic effects of four insecticides, i.e. Coragen 20SI (Chlorantraniliprole), Steward (indoxicarb), Belt 39.4 (Flubendiamide), Proclaim (emamectin benzoate) against tomato fruit borer (H. armigera) under field conditions. The research trial was laid out under randomized complete block design (RCBD) together with control. Findings of the bioassays displayed that Coragen 20SI exhibited noteworthy mortality (75.23%) of H. armigera after exposure of 6 days, among the four tested insecticides. Whilst Proclaim and Chlorantraniliprole exhibited relatively lower mortalities of 70.90% and 65.41%, respectively. While relatively lower mortality values i.e. 61.10, 55.41, 52.76 and 48.19% were recorded after 4 days and 57.80, 50.12, 46.09 and 39.24% after 2 days. Overall, results disclosed that all four tested insecticides gave enhanced control under controlled experimental conditions. Hence, Coragen 20SI and Steward can be used in integrated pest management (IPM) of H. armigera.

scholarly journals Trichogramma chilonis as Parasitoid: An Eco-friendly Approach Against Tomato Fruit Borer, Helicoverpa armigera

2020 ◽  
Vol 12 (2) ◽  
pp. 167
Author(s):  
S. S. Abbas ◽  
M. F. Shahzad ◽  
Jamshaid Iqbal ◽  
Ayat Ullah ◽  
Asma Batool ◽  
...  
Keyword(s):  
Helicoverpa Armigera ◽  
Biological Control Agent ◽  
Tomato Fruit ◽  
Maximum Yield ◽  
Cost Benefit ◽  
Pigeon Pea ◽  
Emamectin Benzoate ◽  
Trichogramma Chilonis ◽  
Helicoverpa Armígera ◽  
Fruit Borer

Helicoverpa armigera (Hübner) is a major pest of several crops, e.g., Tomato, cotton, pigeon pea, and chickpea suffered by this insect in various parts of the worldwide. Trichocards as parasitoids regarding the different release levels of Trichogramma chilonis were used to evaluate the effectiveness against tomato fruit borer, Helicoverpa armigera as well as five insecticides with new chemistries were used to find out the comparative bio efficacy, which were relatively safer to human and environment, i.e., Capital plus (Beta-Cyfluthrin + Triazophos, 41.7% EC) 500 ml/Acre, Commando (Acephate, 97% DF) 62 g, Border (Profenofos + Lambda – Cyhalothrin, 61.5% EC) 500 ml/Acre, Polytrin C (Cypermethrin + Profenofos, 440 EC) 500 ml/Acre, Profit (Emamectin Benzoate, 1.9% EC & 90% Tech.) 500 ml/Acre. We also compared the insecticides with trichocards. There were 3 treatments, T1 Profit (Emamectin Benzoate, 1.9% EC & 90% Tech.) 500 ml/Acre, T2 (16000) of biological control agent (egg Parasitoid) and T3 (control plot). 16000 eggs of the parasitoid Trichogram chilonis, released per hectare were most effective in controlling tomato fruit borer. Out of the five insecticides tested, Border proved to be the best one, followed by Profit and Capital Plus in reducing the percent infestation of tomato by tomato fruit borer. In the third experiment, Profit gave best result followed by the Trichograma. chilonis cards with 16000 eggs per hectare. Among the tested insecticides, treatments sprayed with Border gave maximum yield (6179.0 kg/ha), followed by Profit & Polytrin C. Cost benefit ratio shows that highest net return (46.45 BCR) was obtained with Trichograma chilonis cards released plots followed by Profit. Trichocards are suggested for the controlling of Helicoverpa armigera as best substitute for insecticides. The use of trichocards practice have very effective role to protect the soil moreover, this practice may have significant role to protect the soil and save the natural resources from insecticides pollution.

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.

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