calcium cyanamide fertilizer

Mehrzweckanlagen bei AlzChem: Breite Expertise sichert kritische Rohstoffe für Medikamente. Chronic exposure to calcium cyanamide can cause long-lasting rhinitis, or nasal inflammation, and perforation of the nasal septum. Calcium ammonium nitrate (CAN) contains 27% nitrogen in the form of ammonium nitrate. This hygiene effect ensures healthier horses. Applications. Calcium cyanamide is much more than an ordinary nitrogen fertilizer. Calcium cyanamide is the only fertilizer whereby the calcium cyanamide in the soil passes through the so-called cyanamide phase (max. In all cases of accidental exposure to calcium cyanamide, call the Poison Control Center. In addition, soil acidification is prevented. At the same time the cyanamide phase also has a certain counteractive effect on freshly germinated weeds and rosette plants such as dandelions. Weed seeds located at deeper levels, or weeds propagating by rhizoms, are not adequately sensitive. This hygiene effect ensures healthier pastures: No other fertilizer can achieve this effect! Calcium cyanamide therefore delivers an evenly sustained effect over many weeks. DCD is a certified nitrification inhibitor and ensures that the nitrogen is only converted gradually over several weeks from the stable, non-displaceable ammonium form into nitrate. One exception is fertilizers with stabilized ammonium nitrogen (ENTEC, Alzon) and calcium cyanamide. Calcium cyanamide is the only fertilizer whereby the calcium cyanamide in the soil passes through the so-called cyanamide phase (max. Calcium cyanamide is the inorganic compound with the formula CaCN 2. Acute (short-term) inhalation exposure may cause gastritis,rhinitis, pharyngitis, laryngitis, and tracheobronchitis. What Is Fertilizer System and Its Components. 10 days), during which phase the calcium cyanamide in the soil works to counteract the eggs and larvae of pasture parasites. At the same time the cyanamide phase also has a certain … This is the reason for the recognized long-lasting and uniform nitrogen effect of calcium cyanamide. This enables the plant to take in greater proportions of ammonium. This is because the cyanamide promotes the development of some latent existing soil organisms because they are able to use it as a nitrogen source. This is because a small part of the cyanamide in the soil is initially converted into dicyandiamide (DCD). However, it can also be relatively quickly leached out of the root horizon of the soil. An English major, she continues to study information systems management at American Public University. It is prepared starting from a reaction of calcium carbide with gaseous nitrogen at about 900-1000 ° C, in special electric arc furnaces. We must always take into account that it is a toxic product : it must not be used in the organic vegetable garden and anyone who decides to use it must use precautions. Leeann Teagno has been writing professionally since 2006. The fertilizer calcium cyanamide helps plants to reach high yields, thus maximizing profits for farmers. Using it during cultivation would risk damaging the plants. The ammonium is retained in the soil by the clay minerals and is not at risk of leaching. 10 days), during which phase the calcium cyanamide in the soil works to counteract the eggs and larvae of pasture parasites. This is also why ammonium has a more restrained effect than nitrate nitrogen. Calcium Cyanamide is a chemical compound used in industrial agricultural fertilizers. This exothermic reaction then proceeds spontaneously once it has been triggered. It is the calcium salt of the cyanamide (CN2− 2) anion. Within only 5 to 7 days after calcium cyanamide has been spread the cyanamide will have converted fully into urea and other non-toxic nitrogen compounds. Remains of the fertilizer granules which you can still see lying on the soil are the lime and carbon portion of the fertilizer. As soon as calcium cyanamide comes into contact with soil moisture, the calcium cyanamide dissolves from the fertilizer grain and decomposes immediately into calcium hydroxide and cyanamide. This results in temporary concentrations in the top few centimeters of the soil which shallow-rooted plants and certain harmful organisms cannot tolerate. Ammonium is distributed in the soil by diffusion processes. if nitrogen is not given as nitrate when used as a fertilizer but rather in the form of urea (= ureic nitrogen or amide nitrogen) it must first be converted to ammonium nitrate in order to be absorbed by the roots. Calcium cyanamide is listed in Annex I to Regulation (EC) No 2003/2003 as an EC fertiliser and hence benefits from … What is important is the carbamide nitrogen as contained in urea, or the ammonium and the nitrate nitrogen as contained in calcium ammonium nitrate. Its percentage composition consists of: The product looks like a dark gray powder, due to the impurities of coal and lime. Soluble calcium in water 60%, derived from cyanamide. These losses can be kept manageable in extent through various measures, such as working in the fertilizer when tilling the soil, or spreading the fertilizer before precipitation. ), accumulates temporarily in the blood, leading to dizziness, nausea and hot flashes. The chemical is applied directly to the soil, where it breaks down into ingredients that are beneficial to plan growth. The ammonium that results is subsequently converted into NO2 by the bacterial strain Nitrosomonas, which in turn is converted into nitrate NO3 by the Nitrobacter strain. The chemical irritates the eyes, skin and respiratory tract. Calcium cyanamide has many potential health effects. When applied to the soil surface it leads to topsoil-liming,  resulting in improved soil structure, less silting and incrustation, and improved soil respiration. The calcium content of lime nitrogen is over 50% and is, moreover, extremely reactive. Cyanamide taken into the body is completely degraded in the body within 24 hours, and the degradation products excreted in the urine. Certain plants can form cyanamide, for example the hairy vetch and the Robinia-trees. But with calcium cyanamide the further conversion to nitrate is then greatly delayed because the fertilizer inhibits nitrate-forming bacteria in the soil. Environmental Protection Agency: Calcium Cyanamide, Centers for Disease Control: Calcium Cyanamide. Because of the special way it works increased attention is required when using it. Acute exposure to the chemical can lead to an upset stomach, bronchitis, laryngitis; flushing in the face, upper body and arms, low blood pressure and fast heart rate. A part of it binds to the clay and humus in the soil. Calcium cyanamide contains nitrogen (19.8%) almost exclusively in the form of a calcium cyanamide bond. Calcium cyanamide's primary function is that of a fertilizer in industrial agriculture settings. Calcium cyanamide 156-62-7 Hazard Summary Calcium cyanamide is used as a fertilizer, pesticide, and in the manufacture of other chemicals. Under natural conditions most of the ammonium is converted by soil bacteria into nitrate (nitrification), and in doing so becomes effective. During this process amide nitrogen is first converted from the enzyme urease, which is found in all types of soil, into ammonium. Ammonium moves more heavily in the soil than nitrate. As new microbiological studies show, the soil microflora is only temporarily impaired by using  calcium cyanamide:  even at extremely high application rates the microbial populations exceed their initial levels after only few days. Nitrogen fertilizer with beneficial side effects: Calcium cyanamide has one particular feature that distinguishes it from other nitrogen fertilizers. This hygiene effect ensures healthier pastures: No other fertilizer can achieve this effect! That means that half of the nitrogen (13.5% N) is already present as nitrate, the other half as ammonium, which is likewise fully converted in the soil into nitrate within 1-2 weeks. But with calcium cyanamide the further conversion to nitrate is then greatly delayed because the fertilizer inhibits nitrate-forming bacteria in the soil. It is irritating to the eyes, skin, and respiratory tract in humans. Therefore in the soil calcium cyanamide is classed as a calcium multiplier. Adequate ventilation is extremely important when handling or applying the chemical. Therefore the calcium cyanamide fertilizer will also, to a certain extent, affect germinating weeds, soil-borne pathogenic fungi, slugs and wireworms. By contrast, calcium cyanamide contains nitrogen (19.8%) almost exclusively in the form of a calcium cyanamide bond, and the nitrogen is chemically bonded to the lime. Calciocyanamide is sold in granules or powder. 10 days), during which phase the calcium cyanamide in the soil works to counteract the eggs and larvae of pasture parasites.

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