SURVEI HYDROCHEMICAL AIR TANAH DANGKAL DAN SIFAT KARAKTERISTIK TANAH DILAHAN PERTANIAN PALAWIJA DI MARPOYAN DAMAI

Maharatu Village, Marpoyan Damai District in Pekanbaru City has the potential for agricultural land, namely secondary crops. These agricultural activities can have an impact on groundwater pollution, this is due to the use of fertilizers on agricultural land which can seep into the underground water system. This study aims to determine water quality based on parameters of PH, COD, BOD, TDS, coli bacteria, turbidity, Fe, Mn, and Pb and to determine soil characteristics based on porosity and permeability. Water and soil samples were collected from Jalan Kartama, Maharatu Village, Marpoyan Damai District, Pekanbaru City. Water samples were taken from one source and soil samples were taken from 5 observation points representing agricultural land at a depth of 10 cm. Analysis of water quality and soil characteristics is descriptive analytic, while the relationship between porosity and permeability characteristics is analyzed by means of correlation analysis. The results showed that the water quality for all parameters was good except for the pH parameter which was 3.86 and acidic. Soil characteristics show that the largest porosity value is 38.26% and the smallest porosity value is 22.0%, while the maximum soil permeability value is 9.93 cm / hour and the minimum soil permeability is 1.22 cm/hour. Both data show that the relationship between permeability and porosity is directly proportional, the greater the permeability, the greater the porosity value.