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Verma, S. C.
- Impact of Land Uses and Seasons on Physico-Chemical Characteristics of Surface Water in Solan District of Himachal Pradesh
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1 Department of Seed Science and Technology, Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H. P., IN
1 Department of Seed Science and Technology, Dr. Yashwant Singh Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H. P., IN
Source
Nature Environment and Pollution Technology, Vol 15, No 2 (2016), Pagination: 667-672Abstract
It has been widely accepted that there is a close relationship between the land use type and water quality. Streamwater is affected by several processes in the watershed, including anthropogenic activities that result in changes in the quality of water and its functioning. In year 2012, investigations on impact of land uses on physico-chemical properties of surface water was carried out during different seasons (rainy, winter and summer) in adjoining to Kandaghat block situated between latitude 30°57'994'' N and longitude 77°06'470'' E and 1458 metre above mean sea level in Solan District of Himachal Pradesh. The estimated water quality parameters were pH, electrical conductivity (EC), temperature, calcium (Ca), magnesium (Mg), nitrate (NO3 -), chloride (Cl-), chemical oxygen demand (COD) and biochemical oxygen demand (BOD) from 39 sampling sites under different land uses (agriculture, forest and urban). The experimental data were statistically analysed through Factorial Randomized Design and significance of each treatment was calculated. The maximum pH (7.69), EC (266.39 μS/cm), Ca (66.08 mg/L), temperature (19.25°C), BOD (1.45 mg/L) and COD (18.33 mg/L) of surface water were recorded under urban land use, whereas Mg (12.90 mg/L), Cl- (3.05 mg/L) and NO3 - (4.19 mg/L) were maximum under agricultural land use. Maximum pH (7.79), temperature (22.58°C), BOD (1.71 mg/L), COD (17.41 mg/L), Ca (64.61mg/L), Mg (13.87 mg/L) and Cl- (3.39 mg/L) were recorded during summer season, whereas EC (264.75 μS/cm) and NO3 - (3.91 mg/L) were maximum during rainy season. The water quality index (WQI) for selected land uses ranged between 1.0782 to 1.0919, whereas season wise water quality index (WQI) ranged from 1.0757 to 1.0956, which shows excellent water quality; small variations in water quality indices were seasonal and linked to land use practices.Keywords
Water Quality, Surface Waters, Impact of Land Uses, Solan District.Full Text
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- Study of the Groundwater Quality Contaminated with Sugar Mill Effluent
Abstract Views :140 |
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Authors
Affiliations
1 Department of Botany, M.L.K.P.G. College, Balrampur-271 201, U.P., IN
1 Department of Botany, M.L.K.P.G. College, Balrampur-271 201, U.P., IN
Source
Nature Environment and Pollution Technology, Vol 7, No 2 (2008), Pagination: 249-252Abstract
A study was made in the industrial areas of Balrampur where the effluents from a sugar mill were polluting groundwaters. Physico-chemical and microbial analysis was conducted in groundwater samples. It was indicated that EC, TDS, total hardness, BOD, COD, calcium, potassium, bicarbonate, chloride and nitrate levels were on the higher side of permissible limit of WHO standards. Balrampur is regarded as a major industrial city knowing well for its sugar mill that is the largest sugar mill of Asia by the production point of view. Groundwater resources were found polluted by different inorganic and organic pollutants, which were discharged from sugar mill. Polluted groundwater may result in various health problems.Full Text
- Effect of Cadmium on Biology of Tobacco Caterpillar Spodoptera litura Fabricius (Lepidoptera:Noctuidae)
Abstract Views :95 |
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Authors
Affiliations
1 Department of Environmental Science, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H.P., IN
2 Department of Seed Science and Technology. Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H.P., IN
3 Department of Entomology. Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H.P., IN
1 Department of Environmental Science, Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H.P., IN
2 Department of Seed Science and Technology. Dr. Y. S. Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H.P., IN
3 Department of Entomology. Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan-173 230, H.P., IN
Source
Nature Environment and Pollution Technology, Vol 16, No 3 (2017), Pagination: 883-888Abstract
The present study was conducted to investigate the impact of cadmium on biology of Spodoptera litura F. and its accumulation in three consecutive generations. The influence of Cd on fecudinty, fertility, incubation period, larval period, adult longevity and total development period was studied at seven different concentrations viz., 1, 5,10,15, 20, 30 and 40 mg/kg apart from control. Pure culture of S. litura from field collected adult was maintained under laboratory conditions on castor leaves. Fecundity and fertility was low in the highest dose of 40 mg/kg which decreased with generations. Incubation period prolonged with increasing cadmium concentration and generations. The variable doses of cadmium had significant influence on total larval period of the insect. Longest mean larval period of 23.39 days was recorded at 40 mg Cd/kg which differed statistically from its lower concentration. The duration of pupal period decreased with increasing Cd doses as well with generations. Thus, increased cadmium concentrations resulted in prolongation of total developmental period of the insect. Irrespective of generations, total developmental period was 33.97 days in the highest concentration (T7) as compared to control (28.61 days). The accumulation of cadmium in the sixth instar larvae of S. litura increased with increase in dose of heavy metals in artificial diet and with increase in generations. The accumulation of cadmium in agroecosystem might influence the growth and development of S. litura through host plants to some extent.Keywords
Heavy Metals, Cadmium, Spodoptera litura, Tobacco Caterpillar.Full Text