Nutrient Supplying Potential of Different Spent Mushroom Substrate Preparations as Soil Amendment in a Potting Media

2017 5th International Conference on Environment Pollution and Prevention

生态环境科学

Ultra, V.U.^1 ; Ong Sotto, J.M.E.^2 ; Punzalan, M.R.^2

Department of Earth and Environmental Sciences, Faculty of Science, Botswana International University of Science and Technology, Palapye, Botswana^1

College of Agriculture, Fisheries and Natural Resources, University of Eastern Philippines, Catarman, Northern Samar, Philippines^2

关键词: Available nutrients;    Growing media;    High yield;    N fertilizers;    Potting media;    Spent mushroom substrates;    Test plants;    Treatment combinations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/120/1/012010/pdf
DOI  :  10.1088/1755-1315/120/1/012010

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

A three consecutive cropping experiment was conducted to evaluate the nutrient supplying potential of different preparations of the spent mushroom substrate as an amendment of growing media for potted plants using pechay as test plant. There are 12 treatment combinations consisted 4 types of growing media containing soil alone and mixtures of soil with fresh SMS (FSMS), weathered SMS (WSMS) and carbonized SMS (CSMS) in combination with 0%, 50% or 100% recommended rate (RR) of nitrogen fertilizer. Succeeding two trials were conducted on the same pots and treatment assignments. The high yield of pechay during the first and second crop was observed on WSMS and CSMS treatments FSMS media produced high yields only during the 3rd crop. Yield was increased by N fertilizer in WSMS and CSMS treatments but not in FSMS. The growth differences is attributed to differences in available nutrients and C/N ratio between treatments. WSMS and CSMS increased the available N while FSMS immobilized N and other nutrients indicting that weathered SMS and carbonized SMS are more suitable as a component of potting media or as soil amendments without detrimental effect on immobilization and availability of nutrients.