as the amount of organic matter in soil increases , the soil will be better for the growth of plants
wood is not organic_plant_matter. wood is organic_plant_matter. potting_soil is not soil_product. plant_material is organic_matter. growth is not organic_process. potting_soil is soil_product. cellular_growth_factor is organic_matter. plant_product is organic_matter. plant_material is not organic_matter. cellular_growth_factor is not organic_matter.