Authors: RATNAJIT SAHA, Muhammad Nadeem, Lakshman Galagedara, Raymond Thomas, KELLY HAWBOLDT
Published in: CSBE-SCGAB Technical Conferences » 5th CIGR and AGM Quebec City 2021 » Special Session on Biochar
Download RAW file:
Description: The aim of the study was to assess the temporal effect of biochar amendment on pH and Electrical Conductivity (EC) of podzolic soil. Soil samples were collected from the research site in Pasadena, Newfoundland, Canada. Experiment consisted of three types of soils (topsoil, E-horizon soil and mixed soil (topsoil 2: E-horizon soil 1)), two biochar types (granular (BCG) and powder (BCP)), four biochar application rates (0%, 0.5%, 1% and 2% (w/w)) and three replications for each combination were considered. Continuous seven-day measurement of pH and EC using 72 treatment combinations were done using a portable pH/EC/temperature meter (HANNA-HI9813?6 with CAL Check). General ANOVA and pairwise comparison tests were carried out using Statistix 10. pH range was found 4.3-6.3 from day 1 to day 7. The average pH of E-horizon was found to be extremely acidic (4.5) and for topsoil was acidic (5.6). Using 2% BCp amendment resulted in the maximum pH increase (5.8 - 6.3) in soil mixture. EC range was found to be varied between 0-0.26 dS m-1 from day 1 to day 7. The highest EC value was observed in topsoil and 2% BCp amendment. EC was not detectable in E-horizon soil and its biochar amendment. In all the combinations, the highest mean of EC (0.112 dSm-1) observed in day 3 from day 1 to day 7. For EC, all the combinations like soil and biochar type and rate, and time found significant (p=0.000). The findings would be helpful for precise use of biochar in agriculture.
Conference name: 5th CIGR International Conference and CSBE-SCGAB AGM 2021, Quebec City,QC, 11-14 May 2021.
Session name: SPECIAL SESSION Biochar 2
Publication type: Presentation
Language 1: en
Rights: Canadian Society for Bioengineering