As soil organic matter is derived mainly from plant residues, it contains all of the essential plant nutrients. Therefore, accumulated organic matter is a storehouse of plant nutrients. The stable organic fraction (humus) adsorbs and holds nutrients in a plant-available form.hapter 1. Introduction. On the basis of organic matter content, soils are characterized as mineral or organic. Mineral soils form most of the worlds cultivated land and may contain from a trace to 30 percent organic matter.
The patient may be admitted to hospital in order that the medical team can observe the tightness of the cast and the pressure on the leg. The usual healing time for a mid-shaft Tibia and Fibula fracture treated with cast immobilisation is 12 to 16 weeks.
  The fibula is commonly known as the calf bone. It's the weight-bearing bone that extends to the ankle from the knee. It runs parallel to the tibia, which does is not w â¦ eight-bearing.hey are the lower leg bones, usually referred to as the sural which means calf of the leg. The fibula is connected by a synovial joint to your other shin bone, the tibia. The â¦ fibula is what makes your outer ankle bone. And the tibia makes your inner 'ankle' bone.