International Journals
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Item ASSESSMENT OF MACRO NUTRIENTS (N,P AND K) OF MONOCULTURE ,POLYCULTURE AND TERMITORIA SOILS IN POLLACHI , UDAMALPET TALUKS IN COIMBATORE AND TIRUPUR DISTRICTS ,TAMIL NADU , INDIA(Research Journal Of Chemistry And Environment, 2018) S, Kalaichelvi; N, EzhiliThe objective of this research was to calculate the variation in pH and macro nutrients (N, P and K) of monoculture and polyculture soils compared with the termitoria soil from Pollachi and Udamalpet in Coimbatore and Tirupur Districts, Tamil Nadu, India during March 2013 to February 2014. The soil pH, N, P and K level are observed and compared in different soil samples. When compared to monoculture and polyculture soil, the termitoria soil pH, N, P and K favour agriculture and retain the plant nutrients. Through this study, we observed that termitoria soil pH and macronutrients are generally more than the monoculture and polyculture soils. Polyculture soil contains more nutrients when compared with monoculture soil. The study showed highly positive correlation between termitoria soil, monoculture and polyculture soils. The result highlights the value of termites and their beneficial role in soil and agriculture.Item ESTIMATION OF MICRONUTRIENTS AND HEAVY METALS OF MONOCULTURE, POLYCULTURE AND TERMITORIA SOILS (IN POLLACHI AND UDUMALPET TALUKS)(Int J Pharm Bio Sci, 2018) S, Kalaichelvi; N, EzhiliThe aim of this research is to calculate the variation in micronutrients Manganese (Mn), Zinc (Zn), heavy metals Copper (Cu) and Iron (Fe) of monoculture and polyculture soils compared with the termitoria soil from Pollachi and Udumalpet in Coimbatore and Tirupur Districts, Tamil Nadu, India from March 2013 to February 2014. The level of Manganese and Zinc were determined based on the reaction of ions with an acidified molybdate reagent to yield a phophomolybdate complex. The concentrations of Cobalt and Iron were determined using Flame photometer, based on the method described in APHA. When compared to monoculture and polyculture soils, the termitoria soil increased the level of micronutrients was found, favours agriculture and retains the plant nutrients in the soil. In the same way the heavy metal concentration (Copper and Iron) level was also estimated. The result of heavy metals showed positive correlation with agriculture. Polyculture soil contains more nutrients when compared with monoculture soil. The study showed highly positive correlation between termitoria soil, monoculture and polyculture soils. The result highlights the value of termites and their beneficial role on soil and agriculture. The termitorium present in the monoculture and Polyculture land indirectly helps the agricultural soil to get improved with increased level of micronutrients and heavy metals through the chance of mixing mound soil by the wind, rain ect. It is right time for us to brand the terminology “termites are farmer’s friend”.Item PHOSPHORUS SUPPLEMENTATION ALLEVIATION OF THE CADMIUM-INDUCED TOXICITY BY MODULATING OXIDATIVE STRESS MECHANISMS IN VETIVER GRASS [CHRYSOPOGON ZIZANIOIDES (L.) ROBERTY](J. Environ. Eng, 2016) R, Manikandan; N, Ezhili; P, VenkatachalamThe present study describes the potential role of additional phosphorus (P) on alleviating cadmium (Cd)–induced toxicity in vetiver plants. The plant growth was significantly affected at 50 mg L−1 Cd treatment compared to the control, while it increased by 13% with addition of P in the medium when compared with Cd treatment. Accumulation of Cd content in plants showed positive correlation with Cd and Cd+P combination exposure, whereas it was slightly decreased at higher doses of Cd+P combination treatments in roots compared to the shoot exposed to Cd. A decreased level of photosynthetic pigments was noticed with increasing the Cd concentrations, but it was slightly enhanced with Cd and P combination treatments over Cd treatment. Both hydrogen peroxide (H2O2) and malondialhyde (MDA) contents were found to be increased with increasing Cd dose. The antioxidative enzymes such as superoxide dismutase (SOD), catalase (CAT), and peroxidase (POX) activities were found to be increased at lower doses of CdItem ASSESSMENT OF PHYSICOCHEMICAL CHARACTERISTICS AND THE LEVEL OF NUTRIENT CONTENTS AS WELL AS HEAVY METAL IONS IN WATERS OF THREE LAKES AT COIMBATORE, TAMIL NADU, INDIA(J. Mater. Environ. Sci, 2016) R, Manikandan; N, Ezhili; N, Muthulakshmiandal; Favas, Paulo J C; P, VenkatachalamLake water quality degradation and heavy metals pollution have been serious environmental threats for last decades, especially in those fresh water lakes situated in the vicinity of the cities and human habitations. The present study aimed to investigate the physicochemical parameters, level of nutrient contents and heavy metals to determine the water quality of Ukkadam, Kuruchi and Singanallur Lakes. All the physicochemical parameters except dissolved oxygen, sulphate, silicate and nitrate values were found above the prescribed limit as recommended by WHO (2011) and BIS (2003) drinking water quality. The concentrations of Ca, Cr, Cu, Fe, Ni and Pb in waters of the selected three lakes ranged from 0.014 – 0.038, 0.145 – 0.063, 0.025 – 0.552, 0.100 – 3.460, 0.028 – 0.117 and 0.463 – 2.172 mg/L respectively. The concentrations of heavy metals except Cu were found to be higher than the permeable dose. This investigation revealed that the water in these lakes is partially contaminated with high level of heavy metals. It is recommended that proper implementation of new wetland waste management system and constant monitoring is urgently required to maintain good water quality in these lakes for future generationItem STUDIES ON PHYTOPLANKTON POPULATION AND SPECIES DIVERSITY IN THREE WETLANDS OF COIMBATORE, TAMIL NADU, INDIA(International Journal Of Current Research, 2014-08) R, Ilangovan; R, Manikandan; N, Ezhili; K, SubramaniamThe present study concerns monthly variations of phytoplankton species composition, population density, species diversity during September 2012 to March 2013 in Ukkadam, Kuruchi and Singanallur Lakes Coimbatore, Tamil Nadu, India. The total of 20 (Ukkadam Lake), 34 (Kuruchi Lake) and 26 genera (Siganallur Lake) were identified under phytoplankton diversity in studied three lakes. Present study revealed maximum species composition of Chlorophyceae (15 species), Bacillariophyceae (12 species) and Euglenophyceae (6 species) were recorded at Kuruchi Lake. When compared genera wise, Euglenophyceae group were rarely found in both Ukkadam Lake and Singanallur Lake during the study period, it was indicated that these lakes were polluted by organic components. The present baseline information of the phytoplankton distribution and abundance would form a useful tool for further ecological assessment and monitoring of these lakes of Coimbatore.Item ZOOPLANKTON DIVERSITY AND SEASONAL VARIATION OF THREE LAKES IN COIMBATORE, TAMIL NADU, INDIA(Journal of Academia and Industrial Research, 2016-08) R, Manikandan; S, Selvakumar; S, Kalaichelvi; N, EzhiliThe present study was carried out to examine the diversity and density of zooplankton in Ukkadam Lake, Kuruchi Lake and Singanallur Lake in Coimbatore city, Tamil Nadu for the period of September 2012 to August 2013. The samples for Zooplankton analysis were collected early in the morning by plankton net of silk bolting cloth size of 25 µ and preserved in 4% formalin and glycerine for zooplankton analysis. During the present study period, a total 30 of genera of zooplankton composed of 8 genera of protozoa, 9 genera of Rotifer, in which 7 genera belonged to Cladocera and 6 to Copepoda were recorded in all the three lakes. Dominance of Rotifers indicated the eutrophic status of these studied lakes. Species diversity index for zooplankton population varied from 1.74 to 3.63. The zooplanktonic fauna of this lake were abundant during summer season while minimum numbers were recorded during rainy season. The present study findings clearly indicate intensified eutrophication of studied lakes.Item POTENTIAL ECOLOGICAL ASSESSMENT OF SEDIMENT QUALITY AND HEAVY METALS CONTAMINATION IN KURUCHI LAKE, TAMIL NADU, INDIA(J.Mater. Environ. Sci, 2014) R, Manikandan; S, Kalaichelvi; N, EzhiliKuruchi Lake is an important freshwater body of Coimbatore City, Tamil Nadu, India. This lake receives municipal wastes and industrial effluents which contain heavy metals. Therefore, the present study was aimed to investigate the status of physicochemical properties and heavy metal levels in surface sediments of Kuruchi Lake. The result of physicochemical parameters such as pH, Electro Conductivity (EC), chloride, calcium, magnesium, phosphate, sulphate, sodium, potassium, total nitrogen, iron, total alkalinity and total organic carbon concentrations were found to be higher in sediment sample of station 4. The heavy metals concentration showed variations with Cd 4-14 mg/kg, Cr 2295-3198 mg/kg, Cu 872-1199 mg/kg, Ni 964-1520 mg/kg, Mn 4996-5820 mg/kg and Pb 999-1489 mg/kg, respectively. The highest concentrations of Cr, Pb, Ni and Cu were found to be higher in station 4, when compared to other study stations. Cd and Mn levels were found within the normal range. The cluster analysis was used for determining the similarity of heavy metals concentrations in different study stations. This study reveals that sediments of Kuruchi Lake were partially polluted with heavy metals. This study provides the baseline data for future sediment quality assessment of this lake and regular monitoring of sediment quality in this lake is highly recommended.Item DIVERSITY AND SEASONAL VARIATION OF ZOOPLANKTON IN UKKADAM LAKE, COIMBATORE, TAMIL NADU, INDIA(International Journal of Current Research, 2013-08) N, Ezhili; R, Manikandan; R, IllangovanZooplanktons are good indicators for changes of water quality, because they are strongly affected by environmental conditions and respond quickly for the changes in environmental quality. The present study was carried out to examine the diversity and density of zooplankton in Ukkadam lake, Coimbatore, Tamil Nadu, India, for the period of one year from May 2003 to April 2004. During the present study period, a total of 36 genera of zooplank 6 to Copepoda maximum during summer (March, April and M for zooplankton population varied from 1.74 to 3.63. Maximum numbers of zooplankton were recorded in the months of March and October. result was clearly indicating intensified eutrophication of lake