Gestion de la maintenance industrielle ESA-OFPPT-PDF
The container in addition to used in the creation of plants to date, is the polyethylene bag and to a lesser extent the clod.
Although it has a number of drawbacks, the sachet has made it possible to carry out thousands of hectares of reforestation.
If certain precautions are taken; these disadvantages can be minimized; and this specialist to replace it with a rigid-walled container which seems to be the most suitable for producing quality plants.
The watering is intended to maintain lastingness, in the standard prospected space the root system, the quality of water necessary for the plant.
Paradoxically, watering is one of the focuses that must be relentlessly controlled. There is often a heterogeneity in the dissemination of water at the level of the breeding grounds, with overly irrigated areas and other deficits. The use of sprinklers (sprinkler) does not provide nursery managers with changeless control
Thus the daily water supply is carried out in several times so as not to exceed the water retention capacity of the culture substrate and not to cause the permeation of the nutrients.
Watering should be done outside the hottest hours of the day to avoid leaf burns.
Watering frequencies should be high during the sowing period, the seeds should always have enough moisture to trigger the germination process. Often the desiccation of the seeds, standard insufficient watering during this period can lead to low rates of emergence, which are often due, wrongly moreover, to the quality seeds (germinative capacity).
From May, for softwoods, and from September for hardwoods, watering can be reduced gradually for:
- limit the aerial growth of plants;
- allow the seedling of the plants (lignification of the stem and twigs)
- favor the accumulation of carbohydrate reserves in the roots (better repeat rate with manor).
Bioclimates: ideal semi-arid in warm and temperate winter; overflows into the subhumid floor and into the arid coast.
Soils: species indifferent to the nature of the soil; is absent from hydromorphic media.
Biology: rejects strain.
Use: red wood with grain blade, used for cabinetmaking and marquetry. Creation of sandaraque gum.
3.Ceratonia siliqua L.
Carob tree, Kharroub.
Family: Legumes, Césaalpinioïdées
Botanical depiction: evergreen tree up to 15 m tall. Gray bark cracking in irregular grid pattern with age. Very small, pubescent light gray buds. Compound paripinnate leaves comprising 4 to 10 broadly oval leaflets, with full margins, often indented at the top, green glabrous above, in addition to clear, sometimes brownish, below. Species in addition to often monoecious. the flowers are grouped in axillary clusters, null corolla, 5 tiny sepals, very noticeable nectariferous disc. Male flower 5 stamens, female flowers a short, curved pistil. Flowering: August-October. Organic product; pod elongated and flattened, pulpy, 12-20cm long, containing 12-16 brown, shiny seeds. Fruit: July-August of the year following flowering.
Bioclimates: superior arid to superior semi-arid, hot to temperate variety.
Soils: often superficial, red soils, encrusting.
Use: the gusses (carobs) have a great fodder value (1 kg = 1U.F) and are used in the manufacture of feed.