Dr DHANNI DEVI | Indira Gandhi Krishi Vishwavidyalaya, Raipur (original) (raw)
Papers by Dr DHANNI DEVI
Geoderma, 2018
In this study, experiments were designed to isolate, characterize and evaluate an array of bacter... more In this study, experiments were designed to isolate, characterize and evaluate an array of bacteria isolates for their Zn solubilization potential. Out of the six promising Zn solubilizing bacteria (ZnSB), ZnSB2 (B. megaterium, KY687496) was found to be the most potential strain owing to its enhanced Zn solubilization in vitro. In the quantitative study, the net Zn solubilized by ZnSB2 was significantly higher than those solubilized by the other ZnSB at all days of sampling. Similar effects of ZnSB2 was observed in the soil per se, wherein the rate of release of available Zn by ZnSB2 was markedly higher at all days of incubation (25.6%-40.7% of added Zn), with a peak on the 8th day. Such enhanced rates of Zn release by ZnSB2 were attributed to marked decrease in pH owing to enhanced gluconic acid production. In fact, gluconic acid production by ZnSB2 was 1884.7 ± 413.4 μg mL −1 , which was 35.3-69.7% greater than the other shortlisted ZnSB isolates. Further evaluation of ZnSB2 was done in the green house using turmeric as the test crop. ZnSB2 was applied either alone or in combination with chemical Zn (75% and 100% of recommended Zn). The results revealed that soil available Zn level in the treatment with 75% Zn + ZnSB2 (12.69 ± 2.96 mg kg −1) was on par with the level in the treatment with 100% Zn (12.74 ± 2.63 mg kg −1) at 120 days after planting, while at harvest the treatment with 75% Zn + ZnSB2 maintained 65.0% higher available Zn levels than 100% Zn. The positive effect of ZnSB2 was also manifested on rhizome yield, which was at par in the treatments with ZnSB2 + 75% Zn (154.2 g ± 36.0 pot −1) and 100% Zn (177.2 ± 36.7 g pot −1). Besides, the Zn concentration in the rhizome was significantly higher (P < 0.05) in the treatment with ZnSB2 + 75% Zn (40.5 ± 3.5 mg kg −1), which was at par with 100% Zn, but was greater by 98.5% compared to control. The study indicated that ZnSB2 strain was a potential candidate for enhanced Zn dissolution in soil, which would allow reduced inorganic Zn application rates. Nonetheless, in vitro interaction studies (dual culture) suggested that this strain was seriously lacking in disease suppressing traits. But its compatibility with several plant growth promoting rhizobacteria enhanced the possibility of co-inoculation or applying ZnSB2 in a consortium mode especially in condition wherein both soil Zn solubilization and disease suppression becomes imperative.
The present investigation was carried out in green house of Department of Agricultural Microbiolo... more The present investigation was carried out in green house of Department of Agricultural Microbiology, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh (India) during the year 2015-16. The co-inoculation of Rhizobium + PSB at 45 DAS significantly increased no. of root nodules per plant, biomass of nodules, shoot biomass accumulation and N accumulated by shoot over control plants. Plants were allowed to grow up to 45 days under sand culture, data of plant biomass revealed that the highest dry shoot weight was (0.156 gm/plant) associated with combination of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-184 (0.137 gm/plant). Similarly, highest dry wt. of nodules was observed 1.70 mg/plant due to combinations of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-118 (1.52 mg/plant), while the highest number of nodules (6.33 per plant) associated with combination of Rhz-10+PSB-142 followed by Rhz-10+PSB-118 (5.66 per plant). The shoot N accumulation study of the same sand culture experiment indicated that highest shoot N-uptake associated with combination of Rhz-10+PSB-142 (4.57 mg/plant) followed by Rhz-10+PSB-184 (3.94 mg/ plant). Hence, is concluded that combination of Rhz-10+PSB-142 is the most potent N2 fixer for kulthi cultivation in acidic soils of Chhattisgarh.
Journal of Pharmacognosy and Phytochemistry, 2020
Phosphorus is an essential nutrient element required for plant growth and development. Low phosph... more Phosphorus is an essential nutrient element required for plant growth and development. Low phosphorus availability in soil is one of the major constrains for crop production. Phosphate solubilizing fungi enhance available phosphorous released from soils and contribute to fulfill the plants phosphorous requirement. This investigation aimed to isolate and identify potential phosphate solubilizing fungi from arid and semi-arid soils for environment friendly biofertilizer development. Six fungal isolates were isolated and identified as Aspergillus spp. and Penicillium spp. from arid and semi-arid soil based on phosphate solubilization index, morphological studies. Subsequently, fungal isolates having excellent phosphate solubilization efficiency were selected by their potential in broth containing insoluble Ca3(PO4). Interestingly, isolate DCU-201 (Penicillium spp.) have marked phosphate solubilization ability followed by DCU-203 (Aspergillus spp.). The maximum, solubilization index (2.6) and solubilized P (383 µg mL-1) were associated with DCU-201 (Penicillium spp.). In addition, there was inverse proportion between the pH and phosphate solubilizing capacities. These excellent properties of isolates suggested that they have a great potential for agricultural utilization as environmentally sound biofertilizer. In this study, phosphate solubilization by filamentous fungi is reported for the first-time in and semi-arid region of India.
International journal of chemical studies, Sep 1, 2020
The present investigation was carried out during the year 2017-18 and 2018-19 in Laboratory of Mi... more The present investigation was carried out during the year 2017-18 and 2018-19 in Laboratory of Microbiology, Devision of crop production, ICAR-National Research Centre for Seed spices Ajmer, Rajasthan (India). The maximum P solubilization zone was 19 mm followed by 17 mm recorded in isolate DCU-251 which was characterized as Pseudomonas aeruginosa (Accession no. MN192165) and DCU-262 (Kosakonia oryzendophytica strain NRCSSDCU262 Accession no. MN192166), respectively. The least solubilization zone was 11 mm due to isolate DCU-551. Phosphate solubilization index ranged 1.6-3.1. Highest SI was 3.1 followed by 2.9 and 2.8 associated with isolate DCU-251(Pseudomonas aeruginosa strain NRCSSDCU251 Accession no. MN192165), DCU-262 (Kosakonia oryzendophytica strain NRCSSDCU262 Accession no. MN192166) and DCU-22 (Bacillus paramycoides strain NRCSSDCU22 Accession no. MN192162), respectively. The Lowest value of SI was 1.5 due to isolate DCU-551. The highest soluble P (326 g ml −1) in pikovskaya's broth was recorded in bacterial isolate DCU-251(Pseudomonas aeruginosa strain NRCSSDCU251 Accession no. MN192165) and least soluble P was 152 g ml −1 recorded in isolate DCU-553.
Legume Research, Mar 31, 2022
Background: Sclerotinia sclerotiorum (Lib.) de Barry is a soil-borne plant pathogen, capable of i... more Background: Sclerotinia sclerotiorum (Lib.) de Barry is a soil-borne plant pathogen, capable of infecting more than 500 host plants worldwide. It is a major pathogen that plays a crucial role in reducing the yield of economically important crops. Sclerotinia rot also known as Stem rot or white mold, caused by Sclerotinia sclerotiorum is a serious disease of chickpea. Methods: The antagonistic potential of four bioagents i.e. Trichoderma harzianum (Th-BKN), Trichoderma viride (Tv-BKN), Pseudomonas fluorescens (Pf-BKN) and Bacillus subtilis (Bs-BKN) were isolated from chickpea rhizospheric soil. The fungal bioagents were tested for their antagonistic potential against the pathogen in vitro by modified dual culture technique on potato dextrose agar (PDA) medium. While bacterial antagonists tested for their antagonistic potential against the pathogen in vitro by paper disc inoculation technique on Nutrient Agar (NA) and Pseudomonas Agar Fluorescens (PAF) media. Each treatment was replicated four times, incubated at 23±10C, data on the antagonistic activity of different bioagents were recorded and percent inhibition was calculated for each antagonist. Result: The fungal antagonists T. harzianum (Th-BKN) resulted in maximum growth inhibition of the pathogen (70.48%) and bacterial antagonists, Pseudomonas fluorescens (Pf-BKN) (37.56%) was more effective than the Bacillus subtilis (Bs-BKN).
Journal of entomology and zoology studies, 2020
Journal of Pharmacognosy and Phytochemistry, 2020
International Journal of Chemical Studies, 2018
The investigation was carried out in an Inceptisol with Rabi season chickpea to evaluate the isol... more The investigation was carried out in an Inceptisol with Rabi season chickpea to evaluate the isolation of eco-friendly microflora for degradation of herbicide and promoting the soil health. Fifteen soil samples were collected from different plots of a long term herbicidal trail where different herbicides were applied in kharif and rabi season continuously for last five years in a rice-chickpea cropping system. From these soil samples 11 crop beneficial herbicide tolerant microbial isolates were collected. These isolates were further characterized with respect to their cultural characteristics, Dehydrogenase activity and these selected isolates were further tested for their potentiality of pendimethalin degradation. Three rhizobial and four phosphobacterial isolates were taken in a study for their herbicide degradation potential under in-vitro conditions. All isolates had shown good growth in their respective culture media containing 5000 ppm pendimethalin. Twenty treatments were tak...
International Journal of Chemical Studies, 2018
The investigation was carried out to evaluate the identification of suitable crop beneficial bio-... more The investigation was carried out to evaluate the identification of suitable crop beneficial bio-agents for rapid degradation of insecticide. Three soil samples were collected from the vegetable growing farms where different insecticides were over years for controlling of insects to reduce the losses due to insect infestation. From these soil samples 10 crop beneficial insecticide tolerant microbial isolates were collected. These isolates were further characterized with respect to their cultural characteristics and tested for their potentiality of Deltamethrin + Triazophos degradation. Three rhizobial two phosphobacterial, three Azotobactor and two Azospirillum isolates were collected. Isolates were taken in a study for their insecticide degradation potential under in-vitro conditions. All isolates had shown good growth in their respective culture media containing different concentration of Deltamethrin + Triazophos. Ten treatments were taken under this study. At 4000 ppm deltamethr...
The present experiment was conducted under in vivo conditions to observe the effect of botanicals... more The present experiment was conducted under in vivo conditions to observe the effect of botanicals against Cercospora canescens. Six treatments with three replications were taken in Randomised Block Design. To manage the disease an investigation was carried out in the research laboratory of Department of Plant Pathology, SHIATS-DU, Allahabad where the efficacy of different plant extracts viz. Neem (Azadirachta indica), Dhatura (Datura stramonium) Garlic (Allium sativum) Arjun (Terminalia arjuna), Aswagandha (Withania somnifera) and Alovera (Aloe barbadensis) @ 10% against Cercospora canescens were evaluated. Azadirachta indica was found to be the most effective treatment and recorded minimum disease intensity (25.69 %), maximum no. of pod per plant, maximum weight of pod (g) and yield (q/ha) followed by Terminalia arjuna, Alovera leaf, Withania somnifera, Datura stramonium and Allium sativum. The cost of each treatment including material and labour were calculated and the revenue of ...
International Journal of Current Microbiology and Applied Sciences, 2017
Soil pollution is caused by acid rains and particles loaded with heavy metals, falling at the sam... more Soil pollution is caused by acid rains and particles loaded with heavy metals, falling at the same time with the acid rains or blown from the sterile stockpiles resulted from floating and smelting processes (Lacatusu et al., 1999). Soil contamination by heavy metals is a significant problem, which leads to changes of soil characteristics and limits productive and environmental functions.
International Journal of Current Microbiology and Applied Sciences, 2018
The present investigation was carried out in green house of Department of Agricultural Microbiolo... more The present investigation was carried out in green house of Department of Agricultural Microbiology, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh (India) during the year 2015-16. The co-inoculation of Rhizobium + PSB at 45 DAS significantly increased no. of root nodules per plant, biomass of nodules, shoot biomass accumulation and N accumulated by shoot over control plants. Plants were allowed to grow up to 45 days under sand culture, data of plant biomass revealed that the highest dry shoot weight was (0.156 gm/plant) associated with combination of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-184 (0.137 gm/plant). Similarly, highest dry wt. of nodules was observed 1.70 mg/plant due to combinations of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-118 (1.52 mg/plant), while the highest number of nodules (6.33 per plant) associated with combination of Rhz-10+PSB-142 followed by Rhz-10+PSB-118 (5.66 per plant). The shoot N accumulation study of the same sand culture experiment indicated that highest shoot N-uptake associated with combination of Rhz-10+PSB-142 (4.57 mg/plant) followed by Rhz-10+PSB-184 (3.94 mg/ plant). Hence, is concluded that combination of Rhz-10+PSB-142 is the most potent N2 fixer for kulthi cultivation in acidic soils of Chhattisgarh.
Phosphorus is an essential nutrient element required for plant growth and development. Low phosph... more Phosphorus is an essential nutrient element required for plant growth and development. Low phosphorus availability in soil is one of the major constrains for crop production. Phosphate solubilizing fungi enhance available phosphorous released from soils and contribute to fulfill the plants phosphorous requirement. This investigation aimed to isolate and identify potential phosphate solubilizing fungi from arid and semi-arid soils for environment friendly biofertilizer development. Six fungal isolates were isolated and identified as Aspergillus spp. and Penicillium spp. from arid and semi-arid soil based on phosphate solubilization index, morphological studies. Subsequently, fungal isolates having excellent phosphate solubilization efficiency were selected by their potential in broth containing insoluble Ca3(PO4). Interestingly, isolate DCU-201 (Penicillium spp.) have marked phosphate solubilization ability followed by DCU-203 (Aspergillus spp.). The maximum, solubilization index (2.6) and solubilized P (383 µg mL -1 ) were associated with DCU-201 (Penicillium spp.). In addition, there was inverse proportion between the pH and phosphate solubilizing capacities. These excellent properties of isolates suggested that they have a great potential for agricultural utilization as environmentally sound biofertilizer. In this study, phosphate solubilization by filamentous fungi is reported for the first-time in and semi-arid region of India.
Geoderma, 2018
In this study, experiments were designed to isolate, characterize and evaluate an array of bacter... more In this study, experiments were designed to isolate, characterize and evaluate an array of bacteria isolates for their Zn solubilization potential. Out of the six promising Zn solubilizing bacteria (ZnSB), ZnSB2 (B. megaterium, KY687496) was found to be the most potential strain owing to its enhanced Zn solubilization in vitro. In the quantitative study, the net Zn solubilized by ZnSB2 was significantly higher than those solubilized by the other ZnSB at all days of sampling. Similar effects of ZnSB2 was observed in the soil per se, wherein the rate of release of available Zn by ZnSB2 was markedly higher at all days of incubation (25.6%-40.7% of added Zn), with a peak on the 8th day. Such enhanced rates of Zn release by ZnSB2 were attributed to marked decrease in pH owing to enhanced gluconic acid production. In fact, gluconic acid production by ZnSB2 was 1884.7 ± 413.4 μg mL −1 , which was 35.3-69.7% greater than the other shortlisted ZnSB isolates. Further evaluation of ZnSB2 was done in the green house using turmeric as the test crop. ZnSB2 was applied either alone or in combination with chemical Zn (75% and 100% of recommended Zn). The results revealed that soil available Zn level in the treatment with 75% Zn + ZnSB2 (12.69 ± 2.96 mg kg −1) was on par with the level in the treatment with 100% Zn (12.74 ± 2.63 mg kg −1) at 120 days after planting, while at harvest the treatment with 75% Zn + ZnSB2 maintained 65.0% higher available Zn levels than 100% Zn. The positive effect of ZnSB2 was also manifested on rhizome yield, which was at par in the treatments with ZnSB2 + 75% Zn (154.2 g ± 36.0 pot −1) and 100% Zn (177.2 ± 36.7 g pot −1). Besides, the Zn concentration in the rhizome was significantly higher (P < 0.05) in the treatment with ZnSB2 + 75% Zn (40.5 ± 3.5 mg kg −1), which was at par with 100% Zn, but was greater by 98.5% compared to control. The study indicated that ZnSB2 strain was a potential candidate for enhanced Zn dissolution in soil, which would allow reduced inorganic Zn application rates. Nonetheless, in vitro interaction studies (dual culture) suggested that this strain was seriously lacking in disease suppressing traits. But its compatibility with several plant growth promoting rhizobacteria enhanced the possibility of co-inoculation or applying ZnSB2 in a consortium mode especially in condition wherein both soil Zn solubilization and disease suppression becomes imperative.
The present investigation was carried out in green house of Department of Agricultural Microbiolo... more The present investigation was carried out in green house of Department of Agricultural Microbiology, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh (India) during the year 2015-16. The co-inoculation of Rhizobium + PSB at 45 DAS significantly increased no. of root nodules per plant, biomass of nodules, shoot biomass accumulation and N accumulated by shoot over control plants. Plants were allowed to grow up to 45 days under sand culture, data of plant biomass revealed that the highest dry shoot weight was (0.156 gm/plant) associated with combination of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-184 (0.137 gm/plant). Similarly, highest dry wt. of nodules was observed 1.70 mg/plant due to combinations of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-118 (1.52 mg/plant), while the highest number of nodules (6.33 per plant) associated with combination of Rhz-10+PSB-142 followed by Rhz-10+PSB-118 (5.66 per plant). The shoot N accumulation study of the same sand culture experiment indicated that highest shoot N-uptake associated with combination of Rhz-10+PSB-142 (4.57 mg/plant) followed by Rhz-10+PSB-184 (3.94 mg/ plant). Hence, is concluded that combination of Rhz-10+PSB-142 is the most potent N2 fixer for kulthi cultivation in acidic soils of Chhattisgarh.
Journal of Pharmacognosy and Phytochemistry, 2020
Phosphorus is an essential nutrient element required for plant growth and development. Low phosph... more Phosphorus is an essential nutrient element required for plant growth and development. Low phosphorus availability in soil is one of the major constrains for crop production. Phosphate solubilizing fungi enhance available phosphorous released from soils and contribute to fulfill the plants phosphorous requirement. This investigation aimed to isolate and identify potential phosphate solubilizing fungi from arid and semi-arid soils for environment friendly biofertilizer development. Six fungal isolates were isolated and identified as Aspergillus spp. and Penicillium spp. from arid and semi-arid soil based on phosphate solubilization index, morphological studies. Subsequently, fungal isolates having excellent phosphate solubilization efficiency were selected by their potential in broth containing insoluble Ca3(PO4). Interestingly, isolate DCU-201 (Penicillium spp.) have marked phosphate solubilization ability followed by DCU-203 (Aspergillus spp.). The maximum, solubilization index (2.6) and solubilized P (383 µg mL-1) were associated with DCU-201 (Penicillium spp.). In addition, there was inverse proportion between the pH and phosphate solubilizing capacities. These excellent properties of isolates suggested that they have a great potential for agricultural utilization as environmentally sound biofertilizer. In this study, phosphate solubilization by filamentous fungi is reported for the first-time in and semi-arid region of India.
International journal of chemical studies, Sep 1, 2020
The present investigation was carried out during the year 2017-18 and 2018-19 in Laboratory of Mi... more The present investigation was carried out during the year 2017-18 and 2018-19 in Laboratory of Microbiology, Devision of crop production, ICAR-National Research Centre for Seed spices Ajmer, Rajasthan (India). The maximum P solubilization zone was 19 mm followed by 17 mm recorded in isolate DCU-251 which was characterized as Pseudomonas aeruginosa (Accession no. MN192165) and DCU-262 (Kosakonia oryzendophytica strain NRCSSDCU262 Accession no. MN192166), respectively. The least solubilization zone was 11 mm due to isolate DCU-551. Phosphate solubilization index ranged 1.6-3.1. Highest SI was 3.1 followed by 2.9 and 2.8 associated with isolate DCU-251(Pseudomonas aeruginosa strain NRCSSDCU251 Accession no. MN192165), DCU-262 (Kosakonia oryzendophytica strain NRCSSDCU262 Accession no. MN192166) and DCU-22 (Bacillus paramycoides strain NRCSSDCU22 Accession no. MN192162), respectively. The Lowest value of SI was 1.5 due to isolate DCU-551. The highest soluble P (326 g ml −1) in pikovskaya's broth was recorded in bacterial isolate DCU-251(Pseudomonas aeruginosa strain NRCSSDCU251 Accession no. MN192165) and least soluble P was 152 g ml −1 recorded in isolate DCU-553.
Legume Research, Mar 31, 2022
Background: Sclerotinia sclerotiorum (Lib.) de Barry is a soil-borne plant pathogen, capable of i... more Background: Sclerotinia sclerotiorum (Lib.) de Barry is a soil-borne plant pathogen, capable of infecting more than 500 host plants worldwide. It is a major pathogen that plays a crucial role in reducing the yield of economically important crops. Sclerotinia rot also known as Stem rot or white mold, caused by Sclerotinia sclerotiorum is a serious disease of chickpea. Methods: The antagonistic potential of four bioagents i.e. Trichoderma harzianum (Th-BKN), Trichoderma viride (Tv-BKN), Pseudomonas fluorescens (Pf-BKN) and Bacillus subtilis (Bs-BKN) were isolated from chickpea rhizospheric soil. The fungal bioagents were tested for their antagonistic potential against the pathogen in vitro by modified dual culture technique on potato dextrose agar (PDA) medium. While bacterial antagonists tested for their antagonistic potential against the pathogen in vitro by paper disc inoculation technique on Nutrient Agar (NA) and Pseudomonas Agar Fluorescens (PAF) media. Each treatment was replicated four times, incubated at 23±10C, data on the antagonistic activity of different bioagents were recorded and percent inhibition was calculated for each antagonist. Result: The fungal antagonists T. harzianum (Th-BKN) resulted in maximum growth inhibition of the pathogen (70.48%) and bacterial antagonists, Pseudomonas fluorescens (Pf-BKN) (37.56%) was more effective than the Bacillus subtilis (Bs-BKN).
Journal of entomology and zoology studies, 2020
Journal of Pharmacognosy and Phytochemistry, 2020
International Journal of Chemical Studies, 2018
The investigation was carried out in an Inceptisol with Rabi season chickpea to evaluate the isol... more The investigation was carried out in an Inceptisol with Rabi season chickpea to evaluate the isolation of eco-friendly microflora for degradation of herbicide and promoting the soil health. Fifteen soil samples were collected from different plots of a long term herbicidal trail where different herbicides were applied in kharif and rabi season continuously for last five years in a rice-chickpea cropping system. From these soil samples 11 crop beneficial herbicide tolerant microbial isolates were collected. These isolates were further characterized with respect to their cultural characteristics, Dehydrogenase activity and these selected isolates were further tested for their potentiality of pendimethalin degradation. Three rhizobial and four phosphobacterial isolates were taken in a study for their herbicide degradation potential under in-vitro conditions. All isolates had shown good growth in their respective culture media containing 5000 ppm pendimethalin. Twenty treatments were tak...
International Journal of Chemical Studies, 2018
The investigation was carried out to evaluate the identification of suitable crop beneficial bio-... more The investigation was carried out to evaluate the identification of suitable crop beneficial bio-agents for rapid degradation of insecticide. Three soil samples were collected from the vegetable growing farms where different insecticides were over years for controlling of insects to reduce the losses due to insect infestation. From these soil samples 10 crop beneficial insecticide tolerant microbial isolates were collected. These isolates were further characterized with respect to their cultural characteristics and tested for their potentiality of Deltamethrin + Triazophos degradation. Three rhizobial two phosphobacterial, three Azotobactor and two Azospirillum isolates were collected. Isolates were taken in a study for their insecticide degradation potential under in-vitro conditions. All isolates had shown good growth in their respective culture media containing different concentration of Deltamethrin + Triazophos. Ten treatments were taken under this study. At 4000 ppm deltamethr...
The present experiment was conducted under in vivo conditions to observe the effect of botanicals... more The present experiment was conducted under in vivo conditions to observe the effect of botanicals against Cercospora canescens. Six treatments with three replications were taken in Randomised Block Design. To manage the disease an investigation was carried out in the research laboratory of Department of Plant Pathology, SHIATS-DU, Allahabad where the efficacy of different plant extracts viz. Neem (Azadirachta indica), Dhatura (Datura stramonium) Garlic (Allium sativum) Arjun (Terminalia arjuna), Aswagandha (Withania somnifera) and Alovera (Aloe barbadensis) @ 10% against Cercospora canescens were evaluated. Azadirachta indica was found to be the most effective treatment and recorded minimum disease intensity (25.69 %), maximum no. of pod per plant, maximum weight of pod (g) and yield (q/ha) followed by Terminalia arjuna, Alovera leaf, Withania somnifera, Datura stramonium and Allium sativum. The cost of each treatment including material and labour were calculated and the revenue of ...
International Journal of Current Microbiology and Applied Sciences, 2017
Soil pollution is caused by acid rains and particles loaded with heavy metals, falling at the sam... more Soil pollution is caused by acid rains and particles loaded with heavy metals, falling at the same time with the acid rains or blown from the sterile stockpiles resulted from floating and smelting processes (Lacatusu et al., 1999). Soil contamination by heavy metals is a significant problem, which leads to changes of soil characteristics and limits productive and environmental functions.
International Journal of Current Microbiology and Applied Sciences, 2018
The present investigation was carried out in green house of Department of Agricultural Microbiolo... more The present investigation was carried out in green house of Department of Agricultural Microbiology, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh (India) during the year 2015-16. The co-inoculation of Rhizobium + PSB at 45 DAS significantly increased no. of root nodules per plant, biomass of nodules, shoot biomass accumulation and N accumulated by shoot over control plants. Plants were allowed to grow up to 45 days under sand culture, data of plant biomass revealed that the highest dry shoot weight was (0.156 gm/plant) associated with combination of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-184 (0.137 gm/plant). Similarly, highest dry wt. of nodules was observed 1.70 mg/plant due to combinations of Rhz-10+PSB-142 followed by isolate Rhz-10+PSB-118 (1.52 mg/plant), while the highest number of nodules (6.33 per plant) associated with combination of Rhz-10+PSB-142 followed by Rhz-10+PSB-118 (5.66 per plant). The shoot N accumulation study of the same sand culture experiment indicated that highest shoot N-uptake associated with combination of Rhz-10+PSB-142 (4.57 mg/plant) followed by Rhz-10+PSB-184 (3.94 mg/ plant). Hence, is concluded that combination of Rhz-10+PSB-142 is the most potent N2 fixer for kulthi cultivation in acidic soils of Chhattisgarh.
Phosphorus is an essential nutrient element required for plant growth and development. Low phosph... more Phosphorus is an essential nutrient element required for plant growth and development. Low phosphorus availability in soil is one of the major constrains for crop production. Phosphate solubilizing fungi enhance available phosphorous released from soils and contribute to fulfill the plants phosphorous requirement. This investigation aimed to isolate and identify potential phosphate solubilizing fungi from arid and semi-arid soils for environment friendly biofertilizer development. Six fungal isolates were isolated and identified as Aspergillus spp. and Penicillium spp. from arid and semi-arid soil based on phosphate solubilization index, morphological studies. Subsequently, fungal isolates having excellent phosphate solubilization efficiency were selected by their potential in broth containing insoluble Ca3(PO4). Interestingly, isolate DCU-201 (Penicillium spp.) have marked phosphate solubilization ability followed by DCU-203 (Aspergillus spp.). The maximum, solubilization index (2.6) and solubilized P (383 µg mL -1 ) were associated with DCU-201 (Penicillium spp.). In addition, there was inverse proportion between the pH and phosphate solubilizing capacities. These excellent properties of isolates suggested that they have a great potential for agricultural utilization as environmentally sound biofertilizer. In this study, phosphate solubilization by filamentous fungi is reported for the first-time in and semi-arid region of India.