Biological and chemical determination of available potassium in soil.
D001230:Aspergillus / Q000378:metabolism; D004534:Egypt; D008722:Methods; D011188:Potassium / Q000032:analysis* / Q000378:metabolism; D012987:Soil / Q000032:analysis*; D012988:Soil Microbiology
D012987:Soil; D011188:Potassium