Show colloids Coll in soils have much todo to do with plants now that such words as legumes humus and bacteria have become familiar to farmers and their rotation relation to the soil fertility Is id understood tile thu term colloid la Is about to clai claim m the attention of soil builders soil col bolds consist mainly of banle matter and partially decomposed mineral gub stances existing in a very finely divided state these colloids coll tire are important por tant scientists are finding out because they have hae touch to do with plant growth the extent of bacterial action zion in the soil its water holding capacity and the solubility of the plant foods depend very jar largely ely upon the nature of the colloids coll present |