scholarly journals Effect of Larval Density of Helicoverpa armigera (Hubner) on Pod Damage and Yield of Chickpea

2022 ◽  
Author(s):  
Vipin Kumar ◽  
K.C. Gupta ◽  
S.K. Jain ◽  
Nitin Chawla
Keyword(s):  
Helicoverpa Armigera ◽  
Agricultural Research ◽  
Larval Density ◽  
Larval Population ◽  
Randomized Design ◽  
Important Pest ◽  
Helicoverpa Armígera ◽  
Almost All ◽  
The Cost ◽  
Helicoverpa Armigera Hubner

Background: Chickpea (Cicer arietinum L.) is cultivated in almost all parts of world covering more than 50 countries spread over Asia, Africa Europe, Australia, north America and South America countries and is the second most important food legumes crop after common bean (Phaseolus vulgaris L.). Chickpea has played a major role in realization of pulse Revolution in india making the country near self-sufficient in pluses. Gram is extensively grow in india. Due to its high nutritional value and its ability to fix atmospheric nitrogen, its more widely cultivated rabi pulse crop. The gram pod borer Helicoverpa armigera (Hubner) is most important pest of chickpea. Many pesticides were so far tested against this pest but due to over use of these pesticides resistance, residue and resurgence problems arises, beside destruction of natural enemies. Methods: To determination of per cent pod damage and yield of chickpea due to different larval density of H. armigera is an important tool to reduce the cost of cultivation by avoiding the unnecessary use of pesticides. Therefore, a pot experiment was conducted in arranged in a completed randomized design with four replications. The pots were placed under natural field conditions and take observation at Research farm, Rajasthan Agricultural Research Institute, Durgapura, Jaipur during 2015-16 and 2016-17. Result: The results revealed that least per cent pod damage (29.05, 24.78%) was recorded when the larval population was one per plant, while the maximum pod damage (64.55 and 67.76%) was recorded during 2015-16 and 2016-17, respectively. The simple liner correlation analysis indicated that there was a significant positive correlation (r= 0.989 and 0.999) between the larval density and per cent pod damage. Further, a significant correlation was noticed between larval density and number of healthy pods per plant, reduction in yield, yield per plant, total number of pod and damaged pods were -0.964, -0.976; 0.98, 0.986; -0.98, -0.986; 0.117, 0.126 and; 0.985 and 0.992, respectively during 2015-16 and 2016-17.

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%).

Monitoring of Gram Pod Borer, Helicoverpa armigera (Hübner) through Pheromone Traps in Different Modules of Short Duration Pigeonpea

2020 ◽  
Author(s):  
Amit Yadav ◽  
Ram . Keval ◽  
Abhishek . Yadav
Keyword(s):  
Helicoverpa Armigera ◽  
Agricultural Research ◽  
Pheromone Trap ◽  
Control Measures ◽  
Pheromone Traps ◽  
Larval Population ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Trap Catches ◽  
Helicoverpa Armigera Hubner

Present investigations were carried out during Kharif season of 2013-14 and 2014-15 at the Agricultural Research Farm, Banaras Hindu University, Varanasi to monitor the population of Helicoverpa armigera (Hubner) by using pheromone traps and to start appropriate control measures in time. The maximum numbers of moth catches were recorded during 44th (16.8 pheromone trap-1) and 45th (19.5 pheromone trap-1) standard week in all the modules during Kharif 2013 and 2014. Relationship between pheromone trap catches and egg population was found significant and positively correlated in all modules except M3 during 2013. In the succeeding year 2014, the correlation between pheromone trap catches and egg population was positive and significant only in case of M5. The correlation between pheromone trap catches and larval population was positive in all modules but significant in case of M1 during 2013. In the succeeding year 2014, the correlation between pheromone trap catches and larval population was positive in all modules but significant only in M5.

scholarly journals Effect of Artemisia annua L. essential oil on toxicity, enzyme activities, and energy reserves of cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

2015 ◽  
Vol 55 (4) ◽  
pp. 371-377 ◽  
Author(s):  
Malahat Mojarab-Mahboubkar ◽  
Jalal Jalali Sendi ◽  
Alireza Aliakbar
Keyword(s):  
Essential Oil ◽  
Helicoverpa Armigera ◽  
Artemisia Annua ◽  
Instar Larva ◽  
Cotton Bollworm ◽  
Northern Iran ◽  
Artemisia Annua L ◽  
Important Pest ◽  
Helicoverpa Armígera ◽  
Helicoverpa Armigera Hubner

AbstractThe essential oil of Artemisia annua L., a weed collected from northern Iran, was studied for its toxicity and physiological aspects on 4th instar larva of the cotton bollworm Helicoverpa armigera Hübner in controlled conditions (26±1°C, 65±10% RH and 16 L : : 8 D h). The artificial diet was used as a medium for investigating the toxicity and the effect of LC10, LC30, LC50, and LC90on the feeding efficiency of 4th instar larva. The essential oil in doses of LC10, LC30, LC50, and LC90were estimated to be 2.01%, 3.86%, 6.07%, and 18.34%, respectively. The activity of α-amylase, protease, lipase, general esterases, and glutathione S-transferase and protein, triglyceride, glucose for treated larva were measured. The results showed that all of these parameters were decreased compared with the control. Hence, A. annua essential oil is suggested as a botanical for controlling this important pest of field crops.

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 Influence of Intercropping on Larval Population of Chickpea Pod Borer, Helicoverpa armigera (Hub.) in Chickpea (Cicer arietinum L.)

2021 ◽  
Vol 10 (9) ◽  
pp. 319-326
Author(s):  
Hari Prakash Namdev Ram Subhag Singh ◽  
Bharat Lal Kushwaha
Keyword(s):  
Helicoverpa Armigera ◽  
Agricultural Research ◽  
Uttar Pradesh ◽  
Population Increase ◽  
Peak Activity ◽  
Larval Population ◽  
Cicer Arietinum L ◽  
Sole Crop ◽  
Pod Borer ◽  
Helicoverpa Armígera

A field experiment on influence of intercropping on the larval population of chickpea pod borer, Helicoverpa armigera (Hub.) in chickpea was conducted at Agricultural Research Farm of Brahmanand Post Graduate College, Rath, Hamirpur, Uttar Pradesh during 2016-17 and 2019-20. In Bundelkhand agro-climatic region the activity of chickpea pod borer was observed from last week of December to last week of March while, its peak activity was noticed at 9th, 10th and 11th SMW in chickpea agro-ecosystem. The infestation of chickpea pod borer (H. armigera) larvae was started from last week of December when the crop was in vegetative growth stage. Thereafter, its population increase gradually to reach maximum (1.72 larvae/mrl) at 10th standard (first fortnight of March) after that its population declined gradually till the harvesting of the crop. The chickpea intercropped with safflower, mustard, linseed, barley and marigold had significant influence in reducing the larval population of chickpea pod borer (H. armigera). The chickpea intercropped with marigold (0.71larva/mrl) and mustard (0.75larva/mrl) was found the most effective in reducing the larval population of H. armigera. It was followed by chickpea + linseed, chickpea + barley and chickpea + safflower intercropping systems. The maximum population of chickpea pod borer was observed in chickpea sole crop (1.07larvae/mrl).

Karyotype and achiasmatic female meiosis in Helicoverpa armigera (Hübner) and H. punctigera (Wallengren) (Lepidoptera: Noctuidae)

Genome ◽  
1989 ◽  
Vol 32 (6) ◽  
pp. 967-971 ◽  
Author(s):  
Jennifer H. Fisk
Keyword(s):  
Helicoverpa Armigera ◽  
Pest Species ◽  
Female Meiosis ◽  
Cytological Evidence ◽  
Important Pest ◽  
Helicoverpa Armígera ◽  
Achiasmatic Meiosis ◽  
Lepidoptera Noctuidae ◽  
Helicoverpa Armigera Hubner ◽  
Metaphase I

The economically important pest species Helicoverpa armigera and H. punctigera have a karyotype consisting of 31 pairs of chromosomes. The chromosomes are in a graded series of sizes such that pairs cannot be differentiated. Cytological evidence suggests that female meiosis is achiasmatic. Precocious separation of bivalents into univalents at metaphase I was observed in some spermatocytes of H. punctigera. This species also had a consistently greater number of bivalents with fully terminalised chiasmata in each spermatocyte at male metaphase I than H. armigera.Key words: Lepidoptera, Helicoverpa, achiasmatic meiosis, karyotype.

scholarly journals Role of trichomes on leaves and pods for imparting resistance in chickpea [Cicer arientinum (L.)] genotypes against Helicoverpa armigera (Hübner)

2017 ◽  
Vol 9 (4) ◽  
pp. 2193-2198
Author(s):  
Husandeep Singh Brar ◽  
Ravinder Singh
Keyword(s):  
Negative Correlation ◽  
Helicoverpa Armigera ◽  
Glandular Trichomes ◽  
Resistance Mechanism ◽  
Glandular Trichome ◽  
Larval Survival ◽  
Larval Population ◽  
Helicoverpa Armígera ◽  
Minimum Number ◽  
Helicoverpa Armigera Hubner

In chickpea, trichomes provide a potential resistance mechanism against Helicoverpa armigera (Hübner). The present study was conducted to evaluate the trichome density and trichome length on leaves and pods on nine genotypes of chickpea. Two types of trichomes were observed, i.e. non-glandular (on leaves) and glandular (pods). Few glandular trichomes were observed on leaves and a very few non-glandular trichomes were observed on pods. Highest number of non-glandular trichomes on leaves (33.66 trichomes/mm2) were observed in chickpea genotype 5282. Minimum number of glandular trichomes were observed on pods of genotype GL 25016 (12.66 glandular trichomes per mm2). In case of leaves, genotypes ICCL 86111 and GL 25016 recorded maximum non-glandular trichome length of 347.23 and 301.53 μm, respectively. However, genotypes GL 25016, RSG 963 and 5282 rec-orded maximum glandular trichome length of 538.33, 564.97 and 432.61 μm, respectively in pods. Density of non glandular trichomes on leaves showed significant and negative correlation with number of eggs, larval population, larval survival and per cent pod damage. However, density of glandular trichomes on pods showed significant and positive correlation with number of eggs , larval population of H. armigera, larval survival and pod damage. Length of non-glandular trichomes on leaves and glandular trichomes on pods showed non-significant and negative correlation with number of eggs, larval population of H. armigera, larval survival and pod damage. Hence, genotypes with more pubescent leaves, lesser pubescent pods and longer trichomes (both on leaves and pods) should be preferred for developing H. armigera tolerant chickpea genotypes.

Bioefficacy of novel insecticides against pod borer,(Helicoverpa armigera Hubner) in pigeonpea

2017 ◽  
Author(s):  
Hemant Swami ◽  
O.P. Ameta ◽  
Lekha .
Keyword(s):  
Seed Yield ◽  
Helicoverpa Armigera ◽  
Untreated Control ◽  
Larval Population ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Treated Plot ◽  
Helicoverpa Armigera Hubner

The bio efficacy of some new insecticides and their combinations against pod borer infesting pigeonpea was evaluated at Agronomy farm, RCA, Udaipur using four dosages of Chlorantraniliprole 9.6% + Lambdacyhalothrin 4.6% @ 150, 200, 250 and 300 ml/ha along with Lambdacyhalothrin 4.9 % CS @ 500 ml / ha, Chlorantraniliprole 18.5% SC @ 162 ml / ha, Profenophos 50 EC @ 1500 ml / ha and Indoxacarb 14.5 SC @ 517 ml / ha. Among the various insecticides, lowest population of larvae with a mean of 3.65, 4.16, 2.25 and 2.16 larvae/10 plants was recorded in Chlorantraniliprole 9.6% + Lambdacyhalothrin 4.6% at 300 ml/ha as against 35.10, 37.0, 39.55 and 38.47 larvae/10 plants in untreated control during 2011 at 7 and 14 days after first and second spray, respectively which was found at par with Chlorantraniliprole 9.6% + Lambdacyhalothrin 4.6% at 200, and 250 ml/ha. Similar results were also recorded during 2012 with larval population in the range of 2.10 –7.16/ 10 plants in Chlorantraniliprole 9.6% + Lambdacyhalothrin 4.6% treated plot @ 200,250 and 300 ml/ha. Chlorantraniliprole 9.6% + Lambdacyhalothrin 4.6% at 300ml/ha caused highest reduction in pod borer larvae during both the years with a mean reduction of 91.86 and 89.14 per cent during kharif 2011 and 2012, respectively. The seed yield among different treatments ranged from 6.75 to 9.50 and 7.87 to 10.78q/ha against 5.35and 6.45q/ha in untreated control during kharif 2011 and 2012, respectively. The highest seed yield of 9.50 and 10.78 q/ha/ha was recorded in case of spray of Chlorantraniliprole 9.6% + Lambdacyhalothrin 4.6% at 300 ml/ha during kharif 2011 and 2012, 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.

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