Seasonal Incidence of Gram Pod Borer, Helicoverpa armigera (Hübner) and Tur Pod Fly, Melanagromyza obtusa (Malloch) on Late Maturing Pigeonpea in Varanasi Region of Indo-Gangetic Plain

Keval, Ram; Khamoriya, Jitendra; Chakravarty, S. C.; Ganguly, Sabuj

doi:10.9734/jeai/2017/36565

Cited by 5 publications

(4 citation statements)

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“…Next was 32 moths/ 5 traps noticed in the month of August (32 nd standard week), as represented in table 2 and figure (2017), who found that the H. armigera population had a positive correlation with maximum temperature and minimum temperature, along with a significant negative correlation with relative humidity. Keval et al (2017) similarly noted a significant positive correlation between the H. armigera population and maximum temperature, coupled with a significant negative correlation with relative humidity. In contrast, Ojha et al (2017) reported positive correlations between mean atmospheric temperature and wind speed, while they found a negative correlation with relative humidity in relation to pest population.…”

Section: Correlation Of Weather Parameters With Weekly Moth Catches I...mentioning

confidence: 78%

Influence of Abiotic Factors on Trap Catch of Gram Pod Borer, Helicoverpa armigera (Hubner) in Redgram, Cajanus cajan (L.) Millsp. Ecosystem

Priyanka,

Saminathan,

Manivannan

et al. 2023

planthealth

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An experiment was conducted to study the influence of weather parameters on trap catches of Helicoverpa armigera (Hubner) in redgram Cajanus cajan (L.) ecosystem during kharif 2017 at experimental farm of NPRC, Vamban and farmer’s field at Vadakaddu with green colour funnel pheromone traps containing Heli lure. The highest catch (98 moths/ 5 traps) was recorded on January 2nd SMW at Vamban and on 52nd SMW of December at Vadakaddu. In both the locations lowest catch of 20 moths/ 5 traps and 30 moths/ 5 traps were recorded on 35th SMW. The moth catches had highly significant negative correlation with maximum temperature (r = -0.79**), (r = -0.79**), minimum temperature (r = -0.66**), (r = -0.68**), wind speed (r = -0.71**), (r = -0.73**), rainfall (r = -0.54**), (r = -0.51**), rainy days (r = - 0.54**), (r = -0.52**) and sunshine hours (r = - 0.44**), (r = -0.42**) at Vamban and Vadakaddu, respectively. But there was highly significant positive correlation with relative humidity (r = 0.78**) and (r = 0.76**) at Vamban and Vadakaddu, respectively. The regression analysis resulted with an R2 value of 0.791, which indicates that 79.1% catches depends on all the weather parameters at Vamban and R2 value of 0.829 indicating that 82.9% of catches depends on all the weather parameters at Vadakaddu.

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Section: Correlation Of Weather Parameters With Weekly Moth Catches I...mentioning

confidence: 78%

Influence of Abiotic Factors on Trap Catch of Gram Pod Borer, Helicoverpa armigera (Hubner) in Redgram, Cajanus cajan (L.) Millsp. Ecosystem

Priyanka,

Saminathan,

Manivannan

et al. 2023

planthealth

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“…Sahoo and Behera [10] and Jat et al [11] had reported a positive correlation between populations of M. vitrata and the minimum and maximum temperatures, whereas, population of pod borers was adversely affected by the intensity of rain fall. Keval et al [12] indicated that population of H. armigera exhibited a significant positive correlation with maximum temperature (r = 0.753), minimum temperature (r = 0.583).…”

Section: Resultsmentioning

confidence: 99%

An on Farm Trail and Front Line Demonstration on Management of Pod Borer Complex in Pigeon Pea

Ratnakar

Veeranna

Shiva

et al. 2020

IRJPAC

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The study was undertaken on management of pod borer complex in redgram, Cajanus cajan by erecting of pheromone traps for monitoring of Helicoverpa armigera @ 4/ac. Spraying azardiractin 1500 ppm @ 5ml/ l, two sprays with 10 days interval during flower initiation stage. Spaying of Bt @ 2g/l at 25 per cent flowering stage of the crop followed by need based application of emamectin benzoate 0.4 g/l at flowering and pod formation stage was done in 5 locations for an on farm trial and 10 locations for front line demonstration in Bhadradri Kothagudem district of Telangana State during Kharif 2018 and 2019, respectively. The cost benefit ratio (BC Ratio) was higher in technology demonstrated plots with 2.5:1 and 2.3:1 whereas BC ratio was lower comparatively in farmers practiced plots with 1.8: 1 and 1.9:1 in corresponding Kharif 2018 and 2019.

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“…Normal area of field bean is 7.45 L ha, producing 9.10 L tonne with a productivity of 1222 kg/ha. In total field bean contributes 5% in area and 6% in production [2][3][4][5]. The ever highest area and production was 11 L ha and 10 Lt. for both during 2016-17 and productivity of 986 kg/ha during 2020-21 [6].…”

Section: Introductionmentioning

confidence: 99%

Seasonal Incidence of Spotted Pod Borer (Maruca vitrata F.) in Indian bean and Correlation with Meteorological Aspects

N. A.,

H. V.,

S. R.

2024

Int. J.Environ. Clim. Change.

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Aim: To study the population dynamics of spotted pod borer infesting Indian bean in relation to weather parameters Study Design: Field trail; Randomized Block Design. Place and Duration of Study: The study was conducted at College farm at Navsari Agricultural University during Rabi of 2022-23 and 2023-24. Methodology: 50 plants were randomly selected from the net plot area. The observations on the number of larvae per plant and per cent pod damage were counted. Results: The larval population, in year 2022-23 started from 51st SMW. The peak activity was observed in 4th SMW when 6.46 larvae/plant population was recorded which coincided with the peak flowering stage. During the second season (year 2023-24) also, the pest population started from 51st SMW with pest population of 0.8 larvae/plant. The peak pest population was observed on 4th SMW with 6.84 larvae/plant. The pod damage started from 2nd SMW with 10.05 per cent and gradually increased. The peak was recorded in 12th SMW, highest pod damage was observed with 55.89 per cent. Similar to previous year, the pod damage was recorded from 2nd SMW with 11.67 per cent and peak was seen in 8th SMW with 56.63 per cent damage. The correlation of number of larvae per plant with maximum (r=-0.63), minimum (r=-0.62), average temperature (r=-0.74) and average vapour pressure (r=-0.59) showed significantly negative correlation. During year 2023-24, minimum (r=-0.637) and average temperature (r=-0.610) showed significant negative correlation. In case of pod damage, it was revealed that maximum temperature (r=0.58) and bright sunshine hours (BSSH) (r=0.59) exhibited significant positive correlation with pod damage per cent, in year 2022-23. A similar trend was seen in year 2023-24 where, maximum temperature (r=0.692) and BSSH (r=0.787) showed significant positive correlation. Conclusion: Temperature and to some extent vapour pressure plays a significant role in the population fluctuation of spotted pod borer in Indian bean.

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Seasonal Incidence of Gram Pod Borer, Helicoverpa armigera (Hübner) and Tur Pod Fly, Melanagromyza obtusa (Malloch) on Late Maturing Pigeonpea in Varanasi Region of Indo-Gangetic Plain

Cited by 5 publications

References 0 publications

Influence of Abiotic Factors on Trap Catch of Gram Pod Borer, Helicoverpa armigera (Hubner) in Redgram, Cajanus cajan (L.) Millsp. Ecosystem

Influence of Abiotic Factors on Trap Catch of Gram Pod Borer, Helicoverpa armigera (Hubner) in Redgram, Cajanus cajan (L.) Millsp. Ecosystem

An on Farm Trail and Front Line Demonstration on Management of Pod Borer Complex in Pigeon Pea

Seasonal Incidence of Spotted Pod Borer (Maruca vitrata F.) in Indian bean and Correlation with Meteorological Aspects

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