Abstract

ASSESSING THE PHYSIO-CHEMICAL PARAMETERS OF RAIN WATER HARVESTED PONDS IN YESWANTHAPURA VILLAGE, MALLUR, KOLAR DISTRICT, KARNATAKA, INDIA.

Author(s): Hari Prasad HK*, Jayashree DR, Lakshmi Kanth RN, A Nagarathna, Malini MR, Debanjana Roy, Mahesh M

A sound planning to ensure the available water quality for the best use in an irrigated agriculture is dependent on adequate water supply of useable nutrients. The objective of the current study delineates for better understanding of the effect of physical, chemical and biological parameter from rain water harvested ponds in Yeswanthapura village, Malur taluk, Kolar district, Karnataka, India. Water samples were collected from 11 different black polyethylene sheet catchment areas. Standard electronic sensors like Hanna pH and TDS meters, Lutron D.O meter and fem water analysis kits were used to analyze the selected physical and chemical parameters of water. The analyzed results were subjected to WHO and BIS standard permissible limits. The water color was clear in S5, S6, S8 and S9, while S4 had slightly fishy odor. The physical parameters like pH ranged from 6.5-9.5, while, turbidity and TDS was 0.46 ± 0.05 (NTU) to 8 ± 0 (NTU) and 28.02 ± 0.072mg/L to 891.32 ± 0.39mg/L respectively. The chemical parameters Calcium, Magnesium, Sodium, Chloride, Potassium, Nitrate and Phosphate were within the maximum desirable limits with few exceptions. DO values were under standard acceptable edge. The status of physical and chemical parameters showed that these water indices were not toxic. The study recommends that screening of rain water harvested ponds helps in conservation and maximum utilization of the ponds for agriculture and horticulture making the groundwater invisible to visible in the farms, increasing the socioeconomic needs with an effective ecosystem especially, in rural dry semiarid areas.