Study on chemical and biological properties of paddy soils in Nagari Taram, Harau District, Lima Puluh Kota Regency

• Published in: IOP conference series. Earth and environmental science 2021-05, Vol.741 (1), p.12023
• Main Authors: Emalinda, O, Juniarti, J, Darfis, I, Ramayani, Y, Putri, D D
• Format: Article
• Language: English
• Subjects: Biological properties; Chemical properties; Data analysis; Data processing; incepticol; Microorganisms; Organic carbon; paddy soil; pH effects; Polls & surveys; Populations; Respiration; Rice fields; Silica; Silicon dioxide; slope; Soil chemistry; Soil microorganisms; Soil properties; Soils; Total organic carbon
• ISSN: 1755-1307; 1755-1315
• DOI: 10.1088/1755-1315/741/1/012023

Intensive cultivation of paddy soil without giving rest to the soil for years will affect the chemical properties and the presence of microorganisms in the soil. This study aims to examine some of the chemical properties of paddy soil such as pH, CEC, Total organic carbon, exchangeable bases, Total N, Available P, silica content and calculating the population and respiration of microorganisms at various slopes. This research is located in Nagari Taram, Harau District, Limapuluh Kota Regency. The study used a survey method in four stages, namely preparation, pre-survey, main survey and sampling, laboratory analysis and data processing. Samples were taken on rice fields that have been cultivated for approximately 100 years at a depth of 0-20 cm at 5 slopes those are 0-3%, 3-8%, 8-15%, 15-25% and 25-45%. Based on the results of the data analysis it is known that differences in slope affect the chemical and biological properties of the soil. The higher the slope, the decreased several soil chemical properties such as pH, C-organic, P-available, total N, CEC and silica. Soil microorganism populations varied for each slope. The highest bacterial and fungal populations were found on land with a slope of 0-3%, while the highest respiration of soil microorganisms occurred on lands with a slope of 3-8% that is 13.8 mg / kg / day.