questions: asking about use of humic acid. humic acid improve the water holding capacity, root stucture, reduce the soil erosion and improve the nutrient uptake through root. dose- 2-4 ml/liter of water. 
 answers:  humic acid improve the water holding capacity, root stucture, reduce the soil erosion and improve the nutrient uptake through root. dose- 2-4 ml/liter of water.