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STRAW

STRAW Struktur
CAS-Nr.
Englisch Name:
STRAW
Synonyma:
STRAW
CBNumber:
CB21425369
Summenformel:
Molgewicht:
0
MOL-Datei:
Mol file

STRAW Eigenschaften

Sicherheit

STRAW Chemische Eigenschaften,Einsatz,Produktion Methoden

Landwirtschaftliche Anwendung

The dry residue of fine-stemmed cereal crops after the grain is removed is called straw. It is a fibrous cellulosic component (1 to 1.5 m long), similar to that found in hardwood. It can be pulped by the alkaline process to yield speciality papers.
Straw is a major component of farmyard manure 0I.t has N, P and K in small quantities. Dry straw is almost fully organic, carbonaceous (with a carbon to nitrogen ratio of 40-80:1) and contains only small amounts of nutrients (0.4 to 0.5 % nitrogen, 0.25 to 0.4% phosphorus and 0.35 to 0.45% potassium). If straw is plowed back into the soil, it decomposes to release
nutrients and occasionally, undesirable organic acids and ethylene gas. Incorporating straw into wet soil is not advisable since it creates waterlogging and retains herbicide residues.
If straw is burnt, its organic matter and N are lost but K and P return to the soil. Straw may serve as clean, dry, bedding material, providing comfort to animals and conserving their excreta.
Straw when incorporated directly into the soil decomposes slowly. In fertile aerobic soils with sufficient (but not excess) water, however, straw can make considerable contribution to the soil organic matter, especially in areas of intensive cereal production. The other favorable conditions for effective decomposition of carbon in straw are the availability of nitrogen in the soil or plant and a pH regulated by lime. In this way, it helps to increase the water holding and nutrient retention capacities of the soil, improve soil structure and reduce insidious erosion which happens when the soil organic matter level falls below the critical point.
The management of straw incorporation is not simple and warrants that the following rules be followed. (i) Because of the bulky nature of straw, addition must be chopped into short lengths for easier incorporation and increased speed of decomposition. (ii) Because of high carbon to nitrogen ratio of straw, additional fertilizer nitrogen becomes necessary. (iii) Great care must be taken to get a good spread of straw through the topsoil. When wrongly incorporated, it will decompose anaerobically, giving an obnoxious odor, and prove toxic to roots.
Straw fiber has many commercial uses in industries dealing with paper, fuel, chemicals, single cell protein, boards and crafts.

STRAW Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


STRAW Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

Global( 0)Lieferanten
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  • STRAW
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