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Papers by sharad kumar meena

Journal of advances in biology & biotechnology, Jun 17, 2024

During the rabi season, the peak populations of Chilo partellus and Sesamia inferens were observe... more During the rabi season, the peak populations of Chilo partellus and Sesamia inferens were observed under specific weather conditions: no rainfall, maximum temperatures of 32.8°C and 31.9°C, minimum temperatures of 16.7°C and 16.2°C, morning relative humidity of 75.83% and 81.47%, afternoon relative humidity of 43.5% and 48.1%, and wind speeds of 20 km/h and 19.7 km/h, respectively. Correlation analysis revealed that the larval population of C. partellus infesting rabi sorghum had a significantly positive correlation with morning relative humidity and a significantly negative correlation with wind speed. In contrast, the larval population of S. inferens showed a positive but non-significant correlation with rainfall, morning relative humidity, and afternoon relative humidity. By monitoring specific weather conditions, such as humidity and wind speed, and understanding their impact on pest populations, effective interventions can be designed to mitigate the damage caused by C. partellus and S. inferens. This knowledge is crucial for improving crop yields and ensuring sustainable agricultural practices.

Journal of Eco-friendly Agriculture 19(1): 77-81. 2024, 2024

This investigation on the Spodoptera frugiperda was conducted at the Post Graduate Experimental F... more This investigation on the Spodoptera frugiperda was conducted at the Post Graduate Experimental Field of Department of Agricultural Entomology, College of Agriculture, Campus Latur during 2020-21. The study showed that the mortality in early instar larvae of S. frugiperda attacking on rabi sorghum was 8.32 and 10.00 per cent owing to the parasitisation of Aleiodes sp. during first and second generation, respectively. While 14.28 per cent larvae in early instar stage also recorded parasitisation due to Coccygidium melleum during first generation. However, in the early stages of larval development, the mortality rates were 14.28, 8.32 and 9.08 per cent due to physical injury, the SfMNPV and Mermithidae nematodes, respectively, during the second generation. The highest mortality in S. frugiperda populations during the first and second generations occurred in the late instar larval and early instar larval stages, with mortality rates of k=0.138 and k=0.192, respectively. This investigation highlights the influence of both living organisms (biotic factors) and non-living factors (abiotic factors) in driving population fluctuations of S. frugiperda during the rabi season.

International Journal of Environment and Climate Change

A pot study was conducted to assess the efficacy of various fungal and bacterial antagonists as s... more A pot study was conducted to assess the efficacy of various fungal and bacterial antagonists as seed coating treatments against Meloidogyne javanica, a root-knot nematode that infects okra plants. The seeds of okra cv. Pusa Sawani were subjected to treatments with Trichoderma viride, Purpureocillium lilacinum, and Pseudomonas fluorescens at a rate of 2 g/kg seed. As a comparison, Carbosulfan 3G was used as a control, applied at a rate of 3g/kg soil. The treated seeds were then planted in soil infested with two second-stage juveniles of the root -knot nematode per gram of soil. After 45 days of sowing, it was observed that the okra plants exhibited enhanced growth, while the population of root-knot nematodes was significantly reduced in all treatment groups compared to the untreated control. Among the different bio agents tested, Purpureocillium lilacinum exhibited the best treatment followed by Trichoderma viride and Pseudomonas fluorescens for increase plant growth characters as...

International Journal of Plant & Soil Science

The development of diseases in cultivated crops depends on the complex interrelationship between ... more The development of diseases in cultivated crops depends on the complex interrelationship between the host, pathogen, and prevailing environmental conditions. The interaction between the root knot nematode Meloidogyne javanica and the fungus Fusarium oxysporum was studied for the okra cultivar Pusa Sawani. Sequential and simultaneous inoculation of the nematode and fungus was performed to observe the disease severity in the plants due to the individual and interactive effects of the tested nematode and fungus. The results indicated that plant growth was adversely affected in all cases where the plant was inoculated with M. javanica and F. oxysporum, compared to the uninoculated control. The study clearly showed that nematodes act as predisposing factors in the spread of secondary fungal pathogens.

Indian Journal of Entomology

The present investigation was conducted on aphid complex at the Post Graduate experimental field ... more The present investigation was conducted on aphid complex at the Post Graduate experimental field of Department of Agricultural Entomology, College of Agriculture, Campus Latur, during 2020-21. The results revealed that the aphid Melanaphis sacchari reached its maximum in 4th SMW (166.66 aphids /plant). Correlation coefficients revealed that none of the weather parameters had significant effect on M. sacchari . Rhopalosiphum maidis reached its peak incidence in 5th SMW (40 aphids/ plant). Correlation studies revealed that the before noon relative humidity correlated positively, while wind speed correlated negatively with incidence of R. maidis.

Indian Journal of Entomology Online published Ref. No. e23696, 2023

The present investigation was conducted on aphid complex at the Post Graduate experimental field ... more The present investigation was conducted on aphid complex at the Post Graduate experimental field of Department of Agricultural Entomology, College of Agriculture, Campus Latur, during 2020-21. The results revealed that the aphid Melanaphis sacchari reached its maximum in 4 th SMW (166.66 aphids / plant). Correlation coefficients revealed that none of the weather parameters had significant effect on M. sacchari. Rhopalosiphum maidis reached its peak incidence in 5 th SMW (40 aphids/ plant). Correlation studies revealed that the before noon relative humidity correlated positively, while wind speed correlated negatively with incidence of R. maidis.

Indian Journal of Entomology

This study on the sorghum spotted stem borer Chilo partellus (Swinhoe) was conducted at the Post ... more This study on the sorghum spotted stem borer Chilo partellus (Swinhoe) was conducted at the Post Graduate Experimental Field of Department of Agricultural Entomology, College of Agriculture, Campus Latur during 2020-21. The results revealed that C. partellus passed through three generations on rabi sorghum. The mortality in early instar larval stage was observed due to unknown reasons (17.24, 19.05 and 14.51%, respectively), Callibracon sp. (4.16, 11.76 and 8.33%, respectively) and Cotesia flavipes (8.69, 6.67 and 9.65%, respectively) in its first, second and third generations. The mortality in late instar larvae was also found owing to unknown reasons (19.4, 14.28, and 11.36%, respectively), Callibracon sp. (11.76, 12.49 and 11.43%, respectively) and C. flavipes (13.33, 14.28 and 10.26%, respectively) in the first, second and third generations. In first generation, the pupal mortality was not observed, and when noticed it was due to unknown reasons (11.11 and 16.12%, respectively) ...

Invasive species, alien species, exotic pests, or invasive alien species, are common names catego... more Invasive species, alien species, exotic pests, or invasive alien species, are common names categorized as non-native organisms (animals, insects, microbes, diseases, or plants that are pests). Among them, the invasive insect species are considered the major and most rapidly growing threats to the agricultural ecosystem and environment, animal and human health, etc. resulting in causing high economical losses. Incidence of invasive insect pests such as Woolly apple aphid; Eriosoma lanigerum (Hausmann), San Jose scale; Quadraspidiotus perniciousus (Comstock), Lantana bug; Orthezia insignis Browne, Cottony cushion scale; Icerya purchasi Maskell, Potato tuber moth; Phthorimaea operculella (Zeller), Diamond back moth; Plutella xylostella (Linn.), Pine woolly aphid; Pineus pini (Macquart), Subabul psyllid; Heteropsylla cubana Crawford, Serpentine leaf miner; Liriomyza trifolii (Burgess), Coffee berry borer; Hypothenemus hampei(Ferrari), Spiraling whitefly; Aleurodicus disperses Russell, Silver leaf whitefly; Bemisia argentifolii Bellows, Blue gum chalcid; Leptocybe invasa Fisher & La Salle, Coconut eriophid mite; Aceria gurreronis Keifer, Papaya mealybug; Paracoccus marginatus Williams &Granara de Willink, Cotton mealybug; Phenococcus solenopsis Tinsley, Erythrina gall wasp; Quadrastichus erythrinae Kim, Sout American tomato leaf miner; Tuta absoluta Meyrick, Fall armyworm; Spodoperda frugiperda (J.E. Smith) has been noticed. Invasive species have become the most threatened in agricultural and ecological ecosystems due to the absence of natural enemies. Therefore, monitoring, investigation, and observation should be done from time to time in the areas of origin of pests or efforts should be made to find some effective natural enemies in the infested area which are capable to keep pest populations below the economic threshold level. And there is a need to upgrade the quarantine procedure and variate the process of agriculture practices. The related products should also change on a global scale as it may lead to the further extension of the pests.

The Pharma Innovation Journal, 2022

This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant),... more This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant), maximum number of dead heart (17 dead heart plants per quadrat) and maximum per cent dead heart (14 per cent dead heart) per quadrat were observed during 51 th SMW during rabi season. The wind speed (r =-0.562*) was exhibited negatively significant with mean number of eggs per quadrat. However maximum temperature (r =-0.511*) and (r =-0.510*) showed negative significant correlation with mean number of dead heart and per cent of dead heart per quadrat, While wind speed (r =-0.590*) and (r =-0.585*) also exhibited negatively significant correlation with mean number of dead heart and per cent dead heart per quadrat, respectively.

This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant),... more This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant), maximum number of dead heart (17 dead heart plants per quadrat) and maximum per cent dead heart (14 per cent dead heart) per quadrat were observed during 51 th SMW during rabi season. The wind speed (r =-0.562*) was exhibited negatively significant with mean number of eggs per quadrat. However maximum temperature (r =-0.511*) and (r =-0.510*) showed negative significant correlation with mean number of dead heart and per cent of dead heart per quadrat, While wind speed (r =-0.590*) and (r =-0.585*) also exhibited negatively significant correlation with mean number of dead heart and per cent dead heart per quadrat, respectively.

Journal of advances in biology & biotechnology, Jun 17, 2024

During the rabi season, the peak populations of Chilo partellus and Sesamia inferens were observe... more During the rabi season, the peak populations of Chilo partellus and Sesamia inferens were observed under specific weather conditions: no rainfall, maximum temperatures of 32.8°C and 31.9°C, minimum temperatures of 16.7°C and 16.2°C, morning relative humidity of 75.83% and 81.47%, afternoon relative humidity of 43.5% and 48.1%, and wind speeds of 20 km/h and 19.7 km/h, respectively. Correlation analysis revealed that the larval population of C. partellus infesting rabi sorghum had a significantly positive correlation with morning relative humidity and a significantly negative correlation with wind speed. In contrast, the larval population of S. inferens showed a positive but non-significant correlation with rainfall, morning relative humidity, and afternoon relative humidity. By monitoring specific weather conditions, such as humidity and wind speed, and understanding their impact on pest populations, effective interventions can be designed to mitigate the damage caused by C. partellus and S. inferens. This knowledge is crucial for improving crop yields and ensuring sustainable agricultural practices.

Journal of Eco-friendly Agriculture 19(1): 77-81. 2024, 2024

This investigation on the Spodoptera frugiperda was conducted at the Post Graduate Experimental F... more This investigation on the Spodoptera frugiperda was conducted at the Post Graduate Experimental Field of Department of Agricultural Entomology, College of Agriculture, Campus Latur during 2020-21. The study showed that the mortality in early instar larvae of S. frugiperda attacking on rabi sorghum was 8.32 and 10.00 per cent owing to the parasitisation of Aleiodes sp. during first and second generation, respectively. While 14.28 per cent larvae in early instar stage also recorded parasitisation due to Coccygidium melleum during first generation. However, in the early stages of larval development, the mortality rates were 14.28, 8.32 and 9.08 per cent due to physical injury, the SfMNPV and Mermithidae nematodes, respectively, during the second generation. The highest mortality in S. frugiperda populations during the first and second generations occurred in the late instar larval and early instar larval stages, with mortality rates of k=0.138 and k=0.192, respectively. This investigation highlights the influence of both living organisms (biotic factors) and non-living factors (abiotic factors) in driving population fluctuations of S. frugiperda during the rabi season.

International Journal of Environment and Climate Change

A pot study was conducted to assess the efficacy of various fungal and bacterial antagonists as s... more A pot study was conducted to assess the efficacy of various fungal and bacterial antagonists as seed coating treatments against Meloidogyne javanica, a root-knot nematode that infects okra plants. The seeds of okra cv. Pusa Sawani were subjected to treatments with Trichoderma viride, Purpureocillium lilacinum, and Pseudomonas fluorescens at a rate of 2 g/kg seed. As a comparison, Carbosulfan 3G was used as a control, applied at a rate of 3g/kg soil. The treated seeds were then planted in soil infested with two second-stage juveniles of the root -knot nematode per gram of soil. After 45 days of sowing, it was observed that the okra plants exhibited enhanced growth, while the population of root-knot nematodes was significantly reduced in all treatment groups compared to the untreated control. Among the different bio agents tested, Purpureocillium lilacinum exhibited the best treatment followed by Trichoderma viride and Pseudomonas fluorescens for increase plant growth characters as...

International Journal of Plant & Soil Science

The development of diseases in cultivated crops depends on the complex interrelationship between ... more The development of diseases in cultivated crops depends on the complex interrelationship between the host, pathogen, and prevailing environmental conditions. The interaction between the root knot nematode Meloidogyne javanica and the fungus Fusarium oxysporum was studied for the okra cultivar Pusa Sawani. Sequential and simultaneous inoculation of the nematode and fungus was performed to observe the disease severity in the plants due to the individual and interactive effects of the tested nematode and fungus. The results indicated that plant growth was adversely affected in all cases where the plant was inoculated with M. javanica and F. oxysporum, compared to the uninoculated control. The study clearly showed that nematodes act as predisposing factors in the spread of secondary fungal pathogens.

Indian Journal of Entomology

The present investigation was conducted on aphid complex at the Post Graduate experimental field ... more The present investigation was conducted on aphid complex at the Post Graduate experimental field of Department of Agricultural Entomology, College of Agriculture, Campus Latur, during 2020-21. The results revealed that the aphid Melanaphis sacchari reached its maximum in 4th SMW (166.66 aphids /plant). Correlation coefficients revealed that none of the weather parameters had significant effect on M. sacchari . Rhopalosiphum maidis reached its peak incidence in 5th SMW (40 aphids/ plant). Correlation studies revealed that the before noon relative humidity correlated positively, while wind speed correlated negatively with incidence of R. maidis.

Indian Journal of Entomology Online published Ref. No. e23696, 2023

The present investigation was conducted on aphid complex at the Post Graduate experimental field ... more The present investigation was conducted on aphid complex at the Post Graduate experimental field of Department of Agricultural Entomology, College of Agriculture, Campus Latur, during 2020-21. The results revealed that the aphid Melanaphis sacchari reached its maximum in 4 th SMW (166.66 aphids / plant). Correlation coefficients revealed that none of the weather parameters had significant effect on M. sacchari. Rhopalosiphum maidis reached its peak incidence in 5 th SMW (40 aphids/ plant). Correlation studies revealed that the before noon relative humidity correlated positively, while wind speed correlated negatively with incidence of R. maidis.

Indian Journal of Entomology

This study on the sorghum spotted stem borer Chilo partellus (Swinhoe) was conducted at the Post ... more This study on the sorghum spotted stem borer Chilo partellus (Swinhoe) was conducted at the Post Graduate Experimental Field of Department of Agricultural Entomology, College of Agriculture, Campus Latur during 2020-21. The results revealed that C. partellus passed through three generations on rabi sorghum. The mortality in early instar larval stage was observed due to unknown reasons (17.24, 19.05 and 14.51%, respectively), Callibracon sp. (4.16, 11.76 and 8.33%, respectively) and Cotesia flavipes (8.69, 6.67 and 9.65%, respectively) in its first, second and third generations. The mortality in late instar larvae was also found owing to unknown reasons (19.4, 14.28, and 11.36%, respectively), Callibracon sp. (11.76, 12.49 and 11.43%, respectively) and C. flavipes (13.33, 14.28 and 10.26%, respectively) in the first, second and third generations. In first generation, the pupal mortality was not observed, and when noticed it was due to unknown reasons (11.11 and 16.12%, respectively) ...

Invasive species, alien species, exotic pests, or invasive alien species, are common names catego... more Invasive species, alien species, exotic pests, or invasive alien species, are common names categorized as non-native organisms (animals, insects, microbes, diseases, or plants that are pests). Among them, the invasive insect species are considered the major and most rapidly growing threats to the agricultural ecosystem and environment, animal and human health, etc. resulting in causing high economical losses. Incidence of invasive insect pests such as Woolly apple aphid; Eriosoma lanigerum (Hausmann), San Jose scale; Quadraspidiotus perniciousus (Comstock), Lantana bug; Orthezia insignis Browne, Cottony cushion scale; Icerya purchasi Maskell, Potato tuber moth; Phthorimaea operculella (Zeller), Diamond back moth; Plutella xylostella (Linn.), Pine woolly aphid; Pineus pini (Macquart), Subabul psyllid; Heteropsylla cubana Crawford, Serpentine leaf miner; Liriomyza trifolii (Burgess), Coffee berry borer; Hypothenemus hampei(Ferrari), Spiraling whitefly; Aleurodicus disperses Russell, Silver leaf whitefly; Bemisia argentifolii Bellows, Blue gum chalcid; Leptocybe invasa Fisher & La Salle, Coconut eriophid mite; Aceria gurreronis Keifer, Papaya mealybug; Paracoccus marginatus Williams &Granara de Willink, Cotton mealybug; Phenococcus solenopsis Tinsley, Erythrina gall wasp; Quadrastichus erythrinae Kim, Sout American tomato leaf miner; Tuta absoluta Meyrick, Fall armyworm; Spodoperda frugiperda (J.E. Smith) has been noticed. Invasive species have become the most threatened in agricultural and ecological ecosystems due to the absence of natural enemies. Therefore, monitoring, investigation, and observation should be done from time to time in the areas of origin of pests or efforts should be made to find some effective natural enemies in the infested area which are capable to keep pest populations below the economic threshold level. And there is a need to upgrade the quarantine procedure and variate the process of agriculture practices. The related products should also change on a global scale as it may lead to the further extension of the pests.

The Pharma Innovation Journal, 2022

This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant),... more This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant), maximum number of dead heart (17 dead heart plants per quadrat) and maximum per cent dead heart (14 per cent dead heart) per quadrat were observed during 51 th SMW during rabi season. The wind speed (r =-0.562*) was exhibited negatively significant with mean number of eggs per quadrat. However maximum temperature (r =-0.511*) and (r =-0.510*) showed negative significant correlation with mean number of dead heart and per cent of dead heart per quadrat, While wind speed (r =-0.590*) and (r =-0.585*) also exhibited negatively significant correlation with mean number of dead heart and per cent dead heart per quadrat, respectively.

This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant),... more This study evaluate that maximum number of egg laying by Atherigona soccata (2.9 eggs per plant), maximum number of dead heart (17 dead heart plants per quadrat) and maximum per cent dead heart (14 per cent dead heart) per quadrat were observed during 51 th SMW during rabi season. The wind speed (r =-0.562*) was exhibited negatively significant with mean number of eggs per quadrat. However maximum temperature (r =-0.511*) and (r =-0.510*) showed negative significant correlation with mean number of dead heart and per cent of dead heart per quadrat, While wind speed (r =-0.590*) and (r =-0.585*) also exhibited negatively significant correlation with mean number of dead heart and per cent dead heart per quadrat, respectively.