Specialists can be promoted to corporal, the lowest rank of non-commissioned officer, or NCO. An NCO is an enlisted man with the responsibility to lead other soldiers. Corporals lead teams of a few soldiers within a squad. Each squad of as many as 10 soldiers is led by one or more sergeants or a staff sergeant. In squads with a staff sergeant, the staff sergeant commands any other sergeants in the squad.
Organic soil is soil that contains more than 30 percent of decayed organic material from dead leaves, stems and animals, and this material gives the soil a rich color and fibrous texture. Organic soil also receives and retains moisture, which makes it highly supportive for plant growth.
organic phosphorus in the form of residues manures or from the soil organic matter can contribute greatly to the phosphorus in the soil solution for crop growth in some soils organic phosphorus can contribute 50 percent of the available phosphorusrganic phosphorus in the form of residues manures or from the soil organic matter can contribute greatly to the phosphorus in the soil solution for crop growth in some soils organic phosphorus can contribute 50 percent of the available phosphorus