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sbl · 03-15-2010, 08:15 AM

Scientific definition: Humus (soil humus) is all organic natural matter in soil. Humic Acid is the water soluble fraction of organic matter that can be extracted by alkaline extraction (pH > 10), but precipitates at pH < 5. Fulvic acid is the water soluble fraction of organic matter that can be extracted by alkaline extraction but remains soluble at pH < 5.

03-15-2010, 08:15 AM	#15 (permalink)
sbl sbl's Photo Gallery Location: Pensacola, FL Find me on the map! Zone: 8/9 Join Date: Jul 2009 Posts: 1,013 BananaBucks : 67,101 Feedback: 0 / 0% Said "Thanks" 177 Times Was Thanked 732 Times in 395 Posts Said "Welcome to Bananas" 154 Times	Re: a good soil for bananas Scientific definition: Humus (soil humus) is all organic natural matter in soil. Humic Acid is the water soluble fraction of organic matter that can be extracted by alkaline extraction (pH > 10), but precipitates at pH < 5. Fulvic acid is the water soluble fraction of organic matter that can be extracted by alkaline extraction but remains soluble at pH < 5.