Evaluation of biopesticides against gram pod borer Helicoverpa armigera (HUB.) on pigeonpea

2016 ◽  
Author(s):  
Sagar Anand Pandey ◽  
S. B. Das
Keyword(s):  
Field Experiment ◽  
Grain Yield ◽  
Helicoverpa Armigera ◽  
Block Design ◽  
Pigeon Pea ◽  
Larval Population ◽  
Randomized Block Design ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Major Pest

A field experiment on evaluation of biopesticides against gram pod borer (Helicoverpa armigera Hub.) on pigeon pea was carried out during kharif season of 2012-13. The experiment was laid out in randomized block design with three replications. Gram pod borer is a major pest of pigeon pea in India. For the management of this pest seven biopesticides were tested along with control. Among the biopesticides, Beauveria bassiana @ 1 liter / ha (1x1012 spores/ml) was found to be most effective biopesticide as it recorded lowest larval population (6.68 larvae / 5plants). The highest larval population was recorded in control (12.61 larvae /5 plants). The least effective treatment was Paecilomyces fumosoreseus (9.31 larvae /5 plants). Similar trend was observed in the grain yield as 1667.55 kg/ha, 709.41kg/ha and 1025.21kg/ha , respectively.

Field Efficiency of Certain Biopesticides and Neem Products Against Helicoverpa armigera (Hubner) on Chickpea (Cicer arietinumL.)

2019 ◽  
Vol 10 (01) ◽  
Author(s):  
Nihad H. Mutlag ◽  
Ameer S. A. Al-Haddad
Keyword(s):  
Helicoverpa Armigera ◽  
Block Design ◽  
Individual Treatment ◽  
Neem Oil ◽  
Larval Population ◽  
Neem Cake ◽  
Combination Treatments ◽  
Randomized Block Design ◽  
Helicoverpa Armígera ◽  
Nuclear Polyhedrosis

A field study was conducted to evaluate the efficiency of four microbial insecticides viz. Beauveria bassiana; HaNPV (Helicoverpa armigera Nuclear Polyhedrosis virus); (Bacillus thuringiensisvar.kurstaki 2 gm/L); HaNPV+Bt; neem oil; neem cake and D.D.V.P EC 76% @0.05% at Research Farm SHIATS,Allahabad during rabi season of 2011-2012. The experiment was laid out in randomized block design with seven treatment and replicated thrice. The observation larval populations of H. armigera were recorded one day before treatment was recorded at 3,7, and 10 days after treatments. The larva population of H. armigera appeared in the third week of February (8 the Standard week) and reached its peak of 14.65 larvae in first week of April and decline rapidly with maturation of crop. There was only one peak in the larval population observation in the 1st week. Bacillus thuringiensis was the most effective chemical by D.D.V.P.76%@0.05% . Among the microbial insecticides. HaNPV ,was the most effective followed by HaNPV+Bt and neem cake . The combination treatments were less effective than the individual treatment neem oil and B. bassiana were the least effective treatment in reducing the larval population of Heliverpa armigera.

Bioefficacy of Chlorantraniliprole 18.5 SC Against Pod Borer, Helicoverpa armigera (Hubner) and Pod Fly, Melanagromyza obtusa (Malloch) in Pigeonpea, Cajanus cajan (Linn.) Millsp.

2021 ◽  
Author(s):  
S.K. Khinchi ◽  
K.C. Kumawat
Keyword(s):  
Helicoverpa Armigera ◽  
Cajanus Cajan ◽  
Block Design ◽  
High Toxicity ◽  
Randomized Block Design ◽  
Pod Borer ◽  
The World ◽  
Market Sample ◽  
Helicoverpa Armígera ◽  
Helicoverpa Armigera Hubner

Background: Pod borer, Helicoverpa armigera (Hubner) and pod fly, Melanagromyza obtusa (Malloch) are important pod boring insects infesting the pigeonpea, Cajanus cajan (Linn.) Millsp. throughout the world. A number of synthetic insecticides are known to be effective against these borers but most of them have been phased out as a result of high toxicity to the pollinators and other biotic agencies, therefore, a new molecule, chlorantraniliprole has been tested for bioefficacy against these insect pests.Methods: The experiment was conducted during Kharif, 2017 in a Randomized Block Design (RBD) with 7 treatments and 3 replications. Observations were made to record pod borer, H. armigera and pod fly, M. obtusa maggot present before treatment imposition and 3, 7 and 14 days after each spray from five randomly selected and tagged plants/ plot. From the data recorded per cent reduction in population over control was calculated. The per cent pod damage was calculated by counting damaged pods out of healthy pods. The numbers of coccinellids and spiders were recorded on 5 randomly selected plants before treatment and 7 and 14 days after spray (DAS) in each treatment.Result: The chlorantraniliprole 18.5 SC was found most effective @ 200 ml/ha which was found at par with chlorantraniliprole 18.5 SC @ 150 ml/ha and chlorantraniliprole 18.5 SC (Market sample) @ 150 ml/ha for suppression pod borer, H. armigera and pod fly, M. obtusa. The yield was maximum and at par in the chlorantraniliprole 18.5 SC @ 200 ml/ha (18.25 q ha-1), chlorantraniliprole 18.5 SC @ 150 ml/ha (17.82 q ha-1) and chlorantraniliprole 18.5 SC (Market sample) @ 150 ml/ha (17.42 q ha-1). Predatory population of coccinellids and spiders after imposing the treatments declined to some extent at seven days after treatment, however, increased after 14 days. Based on the results, the use of chlorantraniliprole 18.5 SC @ 150 ml/ha was most effective to control pod borer and pod fly in pigeonpea crop.

scholarly journals RESISTANCE OF SOYBEAN GENOTYPES WITH LARGE SEED SIZE AND EARLY MATURITY AGAINST POD BORER, Etiella zinckenella TREITSCHKE

2019 ◽  
Vol 19 (2) ◽  
pp. 135
Author(s):  
Marida Santi Yudha Ika Bayu ◽  
Yusmani Prayogo
Keyword(s):  
Block Design ◽  
Choice Test ◽  
Planting Dates ◽  
Larval Population ◽  
Early Maturity ◽  
Seed Damage ◽  
Randomized Block Design ◽  
Pod Borer ◽  
Soybean Genotypes ◽  
Major Pest

Pod borer is a major pest on soybean. The objective of this study was to determine the resistance of soybean genotypes against pod borer based on choice test. The experiment was conducted in green house and laboratory of Entomology, Indonesian Legumes and Tuber Crops Research Institute, using Randomized Block Design with 16 soybean genotypes and three replicates. Planting dates was arranged such a way so as to sincronize the flowering time and pod formation of 16 soybean genotypes. A pairs of 4 days emerged adult pod borer were infested into each plant at R4 stage (21 days after flowering) for two days. The number of egg was observed at 2 days after infestation (DAI) and the number of larva and damaged intensity were observed at 14 DAI. The results showed that genotypes significantly affected egg and larval population, pod and seed damage intensity. The lowest egg and larval population found on Anjasmoro, 6,33 eggs and 10 individuals, respectively. The lowest intensity of pod damage found on Anjasmoro (27,74%), and the lowest intensity of seed damage found on Malabar/Sinabung-68 (15,61%). The resistance of soybean genotypes was non-preference as place to lay eggs and as feed. In conclusion, there were two genotypes showed consistently resistant (Anjasmoro and Malabar/Sinabung-68). These genotypes could be used as a source of genes for varietal improvement of soybean resistance against pod borer.

scholarly journals ​Bio-efficacy of Chemical Insecticides and Biopesticides against Gram Pod Borer, Helicoverpa armigera (Hubner) and Spotted Pod Borer, Maruca testulalis (Geyer) on Greengram, [Vigna radiata (L.) Wilczek]

2021 ◽  
Author(s):  
V.P. Meena ◽  
S.K. Khinchi ◽  
D.K. Bairwa ◽  
Akhter Hussain ◽  
K.C. Kumawat ◽  
...  
Keyword(s):  
Helicoverpa Armigera ◽  
Vigna Radiata ◽  
Insect Pests ◽  
Block Design ◽  
Maruca Testulalis ◽  
College Of Agriculture ◽  
Randomized Block Design ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Helicoverpa Armigera Hubner

Background: Gram pod borer, Helicoverpa armigera (Hubner) and spotted pod borer, Maruca testulalis (Geyer) are important pod boring insects infesting the greengram, [Vigna radiata (L.) Wilczek] throughout the India. A number of synthetic insecticides are known to be effective against these borers but most of them have been phased out as a result of high toxicity to the pollinators and other biotic fauna, therefore, a group of new chemical insecticides with biopesticides have been tested for bioefficacy against these insect pests. Method: A field experiment was conducted at S.K.N. College of Agriculture, Jobner, Rajasthan during kharif, 2018 in randomized block design (RBD) with 9 treatments and 3 replications. The observations were recorded of Helicoverpa armigera (Hubner) and spotted pod borer, Maruca testulalis (Geyer) borers one day before and 1, 3, 7 and 15 days after application of insecticides and biopesticides in each the spray from ten randomly selected and tagged plants/ plot. From the data recorded per cent reduction in population over control was calculated. The per cent pod damage was calculated by counting damaged pods out of healthy pods of greengram. Result: The spinosad 45 SC (0.01%) proved to be most effective, indoxacarb 14.5 SC (0.01%) followed by fipronil 5 SC (0.01%), whereas, treatments of neem leaf extract (10.00%), Beauveria bassiana 1.15 WP 1X108 spore/ l proved to be least effective. The maximum seed yield of 9.13 q ha–1 was obtained in the plots treated with spinosad 45 SC (0.01%) followed by indoxacarb 14.5 SC (0.01%) (8.89 q ha-1), fipronil 5 SC (0.01%) (8.60 q ha-1).

Assessment of IPM module against pod borer complex in pigeon pea (Cajanus cajan L.)

2020 ◽  
Vol 1 (2) ◽  
pp. 86-88
Author(s):  
Sandeep Kumar ◽  
◽  
S. Nath ◽  
S.K. Kannaujia ◽  
S.P. Sonkar
Keyword(s):  
Grain Yield ◽  
Plant Protection ◽  
Pigeon Pea ◽  
Larval Population ◽  
Protection Measures ◽  
Net Return ◽  
Pod Borer ◽  
Untreated Check ◽  
Bud Initiation ◽  
On Farm

On-farm testing of IPM module in pigeon pea against pod borer complex was carried out on farmers’ field of two villages of district Jaunpur by KVK Jaunpur- 1 during 2018 and 2019 with three components viz., IPM module, farmers’ practice, and untreated check without plant protection measures. The IPM interventions viz., growing pod borer tolerant variety, two rows of maize as a border crop, installation of pheromone traps and bird perches with the application of botanical based insecticide azadirachtin 1% at the vegetative stage as an oviposition deterrence, application of chlorantraniliprole, and flubendiamide at critical stages of pod borer appearance during bud initiation and flowering stages. The reduction in the larval population and pod damage in IPM treated plots resulted in a significant increase in grain yield (1525 kg/ha) followed by farmers’ practice (1195 kg/ha) and in untreated check (857 kg/ha) The increase in grain yield was due to an additional investment of Rs.4100/-ha towards IPM module and farmers’ practice (Rs.2600/-ha). The excess expenditure incurred resulted in the highest net return of Rs.47550/-ha in the IPM module as compared to farmers' practice and in untreated check resulted in the lowest net return of Rs.18250/-ha.

scholarly journals PENGARUH UKURAN BRAKTEA BEBERAPA AKSESI KAPAS TERHADAP TINGKAT SERANGAN HAMA PENGGEREK BUAH Helicoverpa armigera (HUBNER)

2020 ◽  
Vol 13 (4) ◽  
pp. 125
Author(s):  
IG.A.A. INDRAYANI ◽  
SIWI SUMARTINI
Keyword(s):  
Helicoverpa Armigera ◽  
Morphological Character ◽  
Insect Pests ◽  
Block Design ◽  
Morphological Characters ◽  
Floral Bract ◽  
Randomized Block Design ◽  
Cotton Plants ◽  
American Bollworm ◽  
Helicoverpa Armígera

<p>ABSTRAK<br />Hingga kini teknik perakitan varietas kapas tahan hama masih<br />dilakukan secara konvensional berdasarkan beberapa karakter morfologi<br />tanaman, seperti: bulu daun, daun okra, braktea berpilin, nektar, dan<br />gosipol tinggi. Karakter-karakter ini diketahui erat hubungannya dengan<br />ketahanan terhadap hama, khususnya H. armigera. Berkaitan dengan<br />serangan H. armigera pada buah, diduga ada bagian-bagian buah kapas<br />yang berkontribusi secara langsung pada serangan hama ini, misalnya<br />braktea buah. Namun demikian, besarnya pengaruh braktea terhadap<br />kerusakan buah kapas perlu dipelajari dalam upaya meminimalkan<br />kerusakan. Penelitian ini bertujuan untuk mengetahui pengaruh ukuran<br />braktea terhadap tingkat kerusakan buah oleh H. armigera pada beberapa<br />aksesi kapas. Penelitian dilaksanakan di Kebun Percobaan Balai Penelitian<br />Tanaman Tembakau dan Serat, di Asembagus, Situbondo, Jawa Timur<br />mulai bulan Januari hingga Desember 2006. Sebanyak 18 aksesi dari 50<br />aksesi kapas dengan berbagai variasi ukuran braktea digunakan sebagai<br />perlakuan. Setiap perlakuan (aksesi) disusun dalam rancangan acak<br />kelompok (RAK), dengan tiga kali ulangan. Lima tanaman kapas dari<br />masing-masing aksesi ditentukan secara acak, dan sebanyak 5 buah kapas<br />muda (diameter ± 4 cm) dipetik dari masing-masing tanaman sampel,<br />kemudian dibawa ke laboratorium untuk diukur luas braktea dan buahnya.<br />Selain itu dilakukan pula pengamatan kerusakan buah dan hasil kapas<br />berbiji di lapang. Hasil penelitian menunjukkan bahwa ukuran braktea<br />berkorelasi positif dengan tingkat kerusakan buah (R 2 = 0,9014), sehingga<br />braktea berukuran besar dan lebar serta menutupi buah secara total<br />berpotensi mengalami kerusakan akibat serangan H. armigera lebih tinggi<br />dibanding braktea berukuran kecil dan sempit. Ukuran panjang dan lebar<br />braktea pada 18 aksesi kapas bervariasi antar aksesi dan masing-masing<br />berkorelasi positif dengan luas (R 2 = 0,876; R 2 = 0,894). Hasil penelitian<br />ini dapat dimanfaatkan dalam merakit varietas tahan hama, dan<br />kombinasinya dengan karakter-karakter morfologi kapas yang sudah ada<br />untuk menghasilkan varietas kapas baru dengan tingkat ketahanan yang<br />lebih tinggi terhadap hama penggerek buah H. armigera.<br />Katakunci : Braktea, Helicoverpa armigera, aksesi kapas, karakter<br />morfologi.</p><p><br />ABSTRACT<br />Effects of bract size of several cotton accessions to<br />American bollworm injury level<br />Conventional  method  by  crossing  technique  based  on<br />morphological characters of plant is now still used in providing resistant<br />varieties of cotton against insect bollworms. A number of genetic<br />characters are now available and have been studying for their assosiation<br />with insect pests resistance such as hairiness, okra leaf, frego bract,<br />nectariless, and high gossypol. Regarding to boll damage by H. armigera,<br />it can be mentioned that there are many other morphological characters of<br />cotton attributable to bollworm damage, such as floral bract. As a part of<br />boll, it is estimated that bracts assosiated with bollworm attacked due to<br />their larger size compared with boll size. Objective of the study was to find<br />out the effect of bract size in relation to bollworm damage on cotton<br />accessions. The study was conducted at Experimental Station of<br />Indonesian Tobacco and Fiber Crops Research Institute in Asembagus,<br />Situbondo, East Java from January to December 2006. Eighteen of fifty<br />cotton accessions were used as treatment and they were arranged in<br />Randomized Block Design (RBD) with three replications. Five randomly<br />cotton plants from each accession and five young bolls were sampled<br />from the selected plant with about 4 cm of diameter were brought in the<br />laboratory to collect information on bract and boll sizes. Bollworm<br />damage was determined by counting the damaged bolls in the field as well<br />as the seed cotton yield. Result showed that bract size was positively<br />correlated with boll damage (R 2 = 0.9014). Higher damaged bolls occured<br />on bolls which is covered completely by bracts. There is variation between<br />length and wide size of bracts among cotton accessions and both showed<br />positive correlation to bract area (R 2 = 0.876; R 2 = 0.894). Based on this<br />study, higher resistance of cotton variety against H. armigera will<br />possiblly be provided through combination between bract size and any<br />other morphological characters of cotton.<br />Key words : Floral bract, Helicoverpa armigera, cotton accession,<br />morphological character</p>

scholarly journals Prediction of Helicoverpa armigera (Hubner) larval population using weather based forewarning model in soybean

2021 ◽  
Vol 21 (4) ◽  
pp. 494-498
Author(s):  
RAM MANOHAR PATEL ◽  
A.N. Sharma ◽  
PURUSHOTTAM SHARMA
Keyword(s):  
Helicoverpa Armigera ◽  
Training Dataset ◽  
Maximum Temperature ◽  
Validation Dataset ◽  
Larval Population ◽  
Pod Borer ◽  
Significant Difference ◽  
Helicoverpa Armígera ◽  
Predicted Values ◽  
Helicoverpa Armigera Hubner

Weekly larval populations of pod borer, Helicoverpa armigera (Hubner) collected from 20 districts of Maharashtra under Crop Pest Surveillance and Advisory Project (CROPSAP) during 2010-2015 were analyzed to work out the effect of weather variables on the incidence of this insect on soybean. The appearance of larva was observed throughout the soybean growing season, and the peak incidence was observed during third week of August to first week of September (34-35 SMW). The correlation analysis of the data revealed that larval population was significantly and positively influenced by the minimum temperature and rainfall of current week as well as previous two weeks. For the development of forewarning model, data for the period from 2010 to 2013 were used as training dataset and two year (2014-2015) data as validation dataset. The mean model used for forewarning the incidence of pod borer larval population was developed by using step-wise multiple regression analysis in polynomial form. The results of mean model revealed that the significant variables affecting the pod borer larval population in soybean were maximum temperature (current and 1st lag week), and rainfall (current week) and the model explained 48.93% variation. The pre-disposing conditions for the incidence of larvae have been worked out as maximum temperature ranging from 26.1 to 31.47 ºC and rainfall ranging from 6.63 to 141.46 mm with low or medium rainfall in previous weeks followed by high in current week. The model was validated with 2014-15 independent dataset with predicted R2 (R2 ) value 28.13%. Two sample t-test showed no Pred significant difference between observed and predicted values (p = 0.3691 > 0.05).

scholarly journals Bioefficacy and Economics of Certain Novel Generation Insecticides against Spotted Pod Borer, Maruca vitrata (Geyer) in Greengram (Vigna radiata L.)

2021 ◽  
Author(s):  
Elluru Sireesha ◽  
Gaje Singh ◽  
Rajendra Singh ◽  
Bhupendra Singh
Keyword(s):  
Grain Yield ◽  
Block Design ◽  
Cost Benefit ◽  
Maruca Vitrata ◽  
Emamectin Benzoate ◽  
Randomized Block Design ◽  
Pod Borer ◽  
Cost Benefit Ratio ◽  
And Control ◽  
Crop Research

Background: Spotted pod borer, Maruca vitrata, cause greater damage by attacking flowers, pods in greengram plants. This study investigates the efficacy and economics of certain novel insecticides when sprayed against spotted pod borer in green gram. Methods: The experiment was conducted at Crop Research Center, Sardar Vallabhbhai Patel University of Agriculture and Technology, Meerut, during kharif 2019 in randomized block design with eight treatments (Emamectin benzoate, Spinosad, Chlorantroniliprole, Indoxacarb, Novaluron, Profenophos, Triazophos and control) and three replications on variety SML668. Observations were taken at three, seven and eleven days after the first and second spray and the data thus recorded were analyzed. Result: The insecticide Chlorantraniliprole 20SC @ 0.025 ml/ lit has shown the highest efficacy with low per cent pod damage (7.33) and maximum grain yield (8.61q/ ha) against M. vitrata from the first day of application followed by Spinosad 45SC @ 0.25 ml/ lit with pod damage of 10.67 per cent and grain yield of 5.08 q/ ha. The highest cost-benefit ratio was obtained in Emamectin benzoate treatment (1:8.54), followed by chlorantraniliprole (1: 6.76).

Bioefficacy of new ready mixed insecticide (novaluron 5.25% + indoxacarb 4.5%SC) against pigeon pea pod borer (Helicoverpa armigera Hubner)

2016 ◽  
Vol 39 (1) ◽  
Author(s):  
A. Ghosal ◽  
A. K. Dolai ◽  
M. L. Chatterjee
Keyword(s):  
Helicoverpa Armigera ◽  
Maximum Yield ◽  
Cost Benefit ◽  
Pigeon Pea ◽  
Remarkable Effect ◽  
Yield Increase ◽  
Pod Borer ◽  
Cost Benefit Ratio ◽  
Helicoverpa Armígera ◽  
Pea Pod

The effect of different treatment schedules of Novaluron 5.25% + Indoxacarb 4.5% SC against pod borer of pigeon pea gave superlative effect over the sole insecticide Novaluron & Indoxacarb & standard check Lamda-cyhalothrin; though, all the treated plots with chemicals were significantly superior in their performance over that of control plots. Among the three selected dose of Novaluron 5.25% + Indoxacarb 4.5% SC (750, 825, 875 ml ha<sup>–1</sup>); the said chemical @ 875 ml ha<sup>–1</sup> was recorded as best in managing <italic>Helicoverpa armigera</italic> population up to harvesting period (mean 0.03% infested pod of both years), while, @ 825 ml ha<sup>–1</sup> also recorded remarkable effect on the target pest. The maximum yield (23.40 q ha<sup>–1</sup>) was obtained from the plots treated with Novaluron 5.25% + Indoxacarb 4.5% SC @ 875 ml ha<sup>–1</sup> closely followed by @ 825 ml ha<sup>–1</sup> (22.98 q ha<sup>–1</sup>). The yield increase was also of high order. Highest cost-benefit ratio (2.07) was recorded in Novaluron 5.25% + Indoxacarb 4.5% SC @ 825 ml ha<sup>–1</sup> closely followed by @ 875 ml ha<sup>–1</sup>.

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