scholarly journals Weather based prediction of Chickpea Helicoverpa armigera population in Bundelkhand agroclimatic zone of Madhya Pradesh

MAUSAM ◽  
2021 ◽  
Vol 67 (2) ◽  
pp. 377-388
Author(s):  
A. K. SRIVASTAVA ◽  
M. K. NAYAK ◽  
YOGRANJAN . ◽  
D. S. TOMAR ◽  
KAMLESH GURJAR
Keyword(s):  
Helicoverpa Armigera ◽  
Minimum Temperature ◽  
Madhya Pradesh ◽  
Multiple Regression Equation ◽  
Weather Factors ◽  
Larval Population ◽  
Degree Day ◽  
Agroclimatic Zone ◽  
Helicoverpa Armígera ◽  
The Impact

An attempt was made to find out the impact of rainfall, temperature and growing degree day (GDD) on the larval incidence and peak population of Helicoverpa armigera on chickpea and its growth in the Bundelkhand Agroclimatic zone of Madhya Pradesh. Besides, an attempt was also made to examine the association with weather variables of rising and falling phase of the larval population of Helicoverpa armigera. It was found that there was not any significant impact of monthly (September and October) rainfall on the larval population but the monthly rainfall of January and February significantly influenced the incidence of the pod borer and GDD plays a vital role in increasing and decreasing of its peak population. Minimum temperature and rainfall play a crucial role for larval incidence and its population growth. Growing degree day from 1st January to 15th February were presented in relation to the number of peak larval population in chickpea. The correlation of weather factors with larval population was also presented and different weather parameters were screened for its prediction and management. A multiple regression equation was also developed. It was found that if the cumulative growing degree day from 1st January to 15th February 350 degree day and weekly minimum temperature ranged from 6 to 12 C along with number of rainfall events  5 days, then number of larval population of H. armigera in chickpea is high and vice-versa. This study will be very useful not only for forecasting the peak larval population of H. armigera in chickpea but in formulating effective pest management strategies too.

Impact of Abiotic Factors and Dates of Sowing on Helicoverpa armigera (Hübner) Parasitoid Campoletis chloridae (Uchida) under Chickpea Cropping System in Tarai Region of Uttarakhand

2021 ◽  
Author(s):  
S.D. Divija ◽  
Meena Agnihotri
Keyword(s):  
Helicoverpa Armigera ◽  
Abiotic Factors ◽  
Cropping System ◽  
Weather Factors ◽  
Campoletis Chlorideae ◽  
Minimum Relative Humidity ◽  
Larval Parasitoid ◽  
Helicoverpa Armígera ◽  
The Impact ◽  
Helicoverpa Armigera Hubner

Background: The solitary endo-larval parasitoid Campoletis chlorideae Uchida (Hymenoptera: Ichneumonidae) is an important biocontrol agent of H. armigera in chickpea ecosystem. Abiotic factors are likely to affect the insect host and activity of its parasitoid. Therefore, the present study was conducted to understand the impact of weather factors and different dates of sowing on per cent parasitization of Helicoverpa armigera (Hübner) by Campoletis chlorideae (Uchida) in chickpea ecosystem.Methods: In this field-laboratory investigation were carried out at Pantnagar during the cropping season of 2017-18. Twenty-five larvae of H. armigera (first and second instars) were collected randomly at weekly basis from untreated chickpea crop. In the laboratory, the collected larvae were reared till parasitoid emergence and observed for per cent parasitisation. Result: The observation recorded revealed that mean seasonal parasitism by Campoletis on larvae of H. armigera was found to be 21%, 43.5% and 34.5% in early (20th October), normal (11th November) and late sown crop (1st December), respectively. Various abiotic parameters like maximum and minimum temperature, maximum and minimum relative humidity registered high level of significant association with per cent parasitization in early and normal sown crop compared to the low level of association in late sown crop. The multiple regression analysis showed that the combined effect of all the meteorological parameters were responsible for 90%, 57.9% and 30.5% variation in per cent parasitization in early, normal and late sown crop, respectively.

Screening of some chickpea (Cicer arietinum L.) varieties against Helicoverpa armigera under semi arid climatic conditions

2016 ◽  
Author(s):  
Shafiq Ur Rehman ◽  
Muhammad Waqar Hassan ◽  
Moazzam Jamil ◽  
Muhammad Akram
Keyword(s):  
Cicer Arietinum ◽  
Helicoverpa Armigera ◽  
Block Design ◽  
Climatic Conditions ◽  
Pest Population ◽  
Weather Factors ◽  
Larval Population ◽  
Cicer Arietinum L ◽  
Helicoverpa Armígera ◽  
Semi Arid

Nine desi chickpea (Cicer arietinum L.) varieties viz., Balkasar-2000, Bhakhar-2011, Bittal-98, Brc-61, Brc-390, Punjab-2000, Punjab-2008, Thall-2006 and 03009 were sown at experimental area of Islamia University of Bahawalpur in randomized complete block design (RCBD) with three replications each during 2014-2015. 03009 had highest mean larval population of Helicoverpa armigera followed by Bittal-98, Thall-2006 and Bhakhar-2011. Punjab-2000, BRC-390 and BRC 61 exhibited moderate larval population. The least larval population was observed in Punjab-2008 and Balkasar-2000. Maximum per cent pod damage was observed in Bittal-98 (28.29) followed by 03009 (26.57), Bhakhar-2011 (25.47), Thall-2006 (24.27), Punjab-2000 (22.81), BRC-390 (21.70), BRC-61 (20.53), Balkasar-2000 (18.30) and Punjab-2008 (16.73). Highest yield of crop was observed in Punjab-2008 (516.35gplot-1) followed by Balkasar-2000 (483.38), BRC-61 (415.15), BRC-390 (380.03), Punjab-2000 (345.34), Bittal-98 (303.50), Bhakhar-2011 (298.43), Thall-2006 (293.55) and 03009 (209.99) g/plot. It was also observed that larval population of H. armigera increased or decreased with weather factors. Thus varieties showing more pest population yielded less and those with less pest population generated more yield of chickpea. These results can be employed for integrated pest management of H. armigera on chickpea in different semi arid climatic conditions.

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.

scholarly journals Field efficacy of Helicoverpa armigera nucleopolyhedro-virus isolates against H. armigera (Hübner) (Lepidoptera: Noctuidae) on cotton and chickpea in Tamil Nadu

2010 ◽  
Vol 46 (No. 3) ◽  
pp. 116-122 ◽  
Author(s):  
S. Jeyarani ◽  
N. Sathiah ◽  
P. Karuppuchamy
Keyword(s):  
Helicoverpa Armigera ◽  
Tamil Nadu ◽  
Cost Benefit ◽  
Larval Population ◽  
Coimbatore District ◽  
Field Efficacy ◽  
Helicoverpa Armígera ◽  
Lepidoptera Noctuidae ◽  
Virus Isolates ◽  
Insecticide Control

Field efficacy of seven geographical isolates of Helicoverpa armigera nucleopolyhedrovirus (HaNPV) along with an insecticide control was evaluated against H. armigera on cotton and chickpea in the Coimbatore district of Tamil Nadu, India. Among the HaNPV isolates, CBE I (Coimbatore) and NEG (Negamum) applied at 3.0 &times; 10<sup>12</sup> POB/ha to cotton and 1.5 &times; 10<sup>12</sup> POB/ha to chickpea with an adjuvant, crude sugar, significantly reduced the H. armigera larval population and increased the yield. CBE I and NEG recorded the highest yield of 2038 kg/ha and 2033 kg/ha, which was on a par with endosulfan (2026.7 kg/ha) with cost/benefit ratios of 1:2.32, 1:2.48, and 1:1.12, respectively, on cotton. In chickpea grain yields of 980, 983, and 973.3 kg/ha and cost/benefit ratios of 1:1.36, 1:1.48 and 1:0.87, respectively, in CBE I, NEG and endosulfan treated plots were obtained. The isolate RAJ (Rajasthan) recorded the lowest yield comparable to that of the untreated control in both crops.

An attempt to control ragwort in Australia with the cinnabar moth, Callimorpha jacobaeae (L.) (Arctiidae : Lepidoptera)

1966 ◽  
Vol 14 (2) ◽  
pp. 201 ◽  
Author(s):  
GF Bornemissza
Keyword(s):  
Fungal Infections ◽  
Virus Disease ◽  
Early Stage ◽  
Reproductive Rate ◽  
Reproductive Capacity ◽  
Weather Factors ◽  
Larval Population ◽  
Annual Fluctuation ◽  
Cinnabar Moth ◽  
The Impact

This paper describes research on the cinnabar moth, Callimorpha jacobaeae, introduced from England and Italy to Australia for the control of the poisonous weed, ragwort (Senecio jacobaea). Studies were conducted for six seasons in a high rainfall area of southern Gippsland, Vic., where the impact of ragwort infestation on dairy pastures was severe. Callimorpha has a univoltine life cycle with an obligatory pupal diapause during winter. The termination of this diapause in introduced stocks was successful to a limited extent only, and changes in its duration required for synchronization with the southern hemisphere seasons adversely affected the reproductive capacity of emerging females. The larval progeny of Italian stock failed to survive in the field, and disappeared completely within the first season, whereas those of English origin were reasonably successful. In view of the low reproductive rate of Callimorpha and because of its numerous insect enemies, breeding was carried out in the field using techniques designed to provide protection from the locally abundant predators. An attempt was also made to assess factors playing a role in its numerical regulation. The larvae were liable to heavy mortality in the field due to the combined effect of fungal infections, insect predators, and parasites, and also to a virus disease introduced in a latent state with the insect. At an early stage of this work (the second Australian generation), a nuclear polyhedral virus epizootic destroyed 90% of the larval population. The fifth Australian generation was the last to survive in the field. Of the larval predators, the mecopteran Harpobittacus nigriceps caused the most serious mortality. This predator, common in all ragwort-infested areas of Victoria, showed a zonal pattern in its density distribution; the high density zones often overlapped sites occupied by larval colonies of the cinnabar moth. The larvae of Callimorpha were more frequently taken by Harpobittacus than tipulid flies (Macromastix spp.) which are normally its principal prey; the abundance and distribution of these flies was also studied. The abundance of both Harpobittacus and Macromastix, was influenced by weather factors, resulting in a marked annual fluctuation in their numbers. At times of high Harpobittacus abundance, mortality in larval colonies of Callimorpha due to this predator averaged over 80%, with extremes of 90-100% being observed frequently. The larvae of Callimorpha were found to be potentially efficient in controlling ragwort. The viable seed production of severely attacked plants was reduced, following defoliation and destruction of the primary flowerheads, by an average of over 98%. However, taking all factors into account, it is unlikely that Callimorpha could exert useful control of ragwort in Australia. There seems little chance that high larval densities, necessary to suppress seeding by ragwort, could be maintained in face of heavy predation. As the data presented in this paper indicate, Harpobittacus alone would be capable of preventing the effective establishment of C. jacobaeae in this country.

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.

scholarly journals Bio-rational Management of Pod Borer (Helicoverpa armigera L.) in Chickpea Crop

2021 ◽  
Author(s):  
B.L. Jat ◽  
Nidhi . ◽  
Gopichand Singh ◽  
Pushpa Kumawat
Keyword(s):  
Helicoverpa Armigera ◽  
Pheromone Trap ◽  
Cost Ratio ◽  
Yield Increase ◽  
Benefit Cost Ratio ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Rational Management ◽  
Benefit Cost ◽  
The Impact

On Farm Testing of Pheromone trap @ 5/ha + Coriander row (7/8:1) + HaNPV @ 250 LE/ha against pod borer (Helicoverpa armigera L.) management was assessed on farmers field in Nagaur district during 2020-21. Trial was conducted on 10 farmer’s field to know the impact of said technology on chickpea pod borer management. In the demonstrated technologies the chickpea seed production 19.83 q/ha. The percent seed yield increase over the farmer’s practices was 34.11%. The net return in demonstration technology was ` 67036/ha and the same was ` 44525/ha. The incremental benefit cost ratio was 3.26 in demonstration technology as compared to farmer’s/ local check 2.60 respectively.

scholarly journals Standardization of Pheromone Traps for the Mass Trapping of Helicoverpa Armigera (Hubner) Hardwick in Tomato

2017 ◽  
Vol 5 (1) ◽  
pp. 45-49
Author(s):  
K. D Shah ◽  
R. C Jhala ◽  
S. R Dhandge
Keyword(s):  
Helicoverpa Armigera ◽  
First Year ◽  
Mass Trapping ◽  
Pheromone Traps ◽  
Larval Population ◽  
Randomized Design ◽  
Helicoverpa Armígera ◽  
Large Plot ◽  
And Control ◽  
Helicoverpa Armigera Hubner

An experiment was carried out during rabi 2011 and summer 2012 in Large Plot Completely Randomized Design with four treatments viz., pheromone traps @ 30, 40, 50 /ha and control withten replications to standardize the requirement of pheromone traps for mass trapping of Helicoverpa armigera (Hubner) Hardwick infesting tomato [Solanum lycopersicum Linnaeus] crop. The results revealed that the highest moth catches were recorded (9630 moths /ha) during first year, while 9405moths /ha were recorded during second year with an average of 9518 /ha during two consecutive years. The treatment of 50 traps /ha recorded significantly lowest population of eggs (0.78 /10 twigs), lowest larval population (1.32 /10 twigs) resulting in lowest fruit damage (3.71%).

scholarly journals Influence of prevailing weather parameters on population dynamics of fruit borer, Helicoverpa armigera (Hübner) on tomato in Haryana

2021 ◽  
Vol 21 (2) ◽  
pp. 193-196
Author(s):  
SHIVANI KHOKHAR ◽  
KRISHNA ROLANIA ◽  
GAURAV SINGH ◽  
ANIL KUMAR
Keyword(s):  
Relative Humidity ◽  
Helicoverpa Armigera ◽  
Significant Positive Correlation ◽  
Linear Regression Analysis ◽  
Maximum Temperature ◽  
Population Fluctuations ◽  
Larval Population ◽  
Positive Correlation ◽  
Helicoverpa Armígera ◽  
Weather Parameters

A field experiment was conducted for two years (2016-17 and 2017-18) at Entomological Research Area, Department of Entomology, CCS Haryana Agricultural University, Hisar to ascertain the influence of various meteorological parameters on population fluctuations of Helicoverpa armigera on tomato. The maximum oviposition (4.60 eggs/ plant) was recorded during 15th standard meteorologicalweek (SMW) whereas larval population was at peak (4.91 larvae/ plant) during 16th SMW. The larval population showed significant positive correlation with maximum temperature (r=0.617*) and highly significant negative correlation with morning (r=-0.784**) as well as evening relative humidity (r=-0.814**). Maximum eggs parasitization (12.85 %) by Trichogramma sp. was recorded during 16th SMW. These trichogrammatid parasitoids exhibited non-significant correlation with weather parameters and highly significant positive correlation (r=0.976**) with egg counts of H. armigera. Multiple linear regression analysis showed that 77 per cent (R2=0.77) variability in larval population was accounted by weather parameters particularly maximum temperature, morning and evening relative humidity. 

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