`A technique of growing plants in nutrient solution”. Hydroponics literally means water-working or water-activation. It is a cultivation technique for growing plants in highly oxygenated, nutrient enriched water, rather than soil. The nutrient solution and its management are the cornerstone for a successful hydroponics system. The function of a hydroponics nutrient solution is to supply the plant roots with water, oxygen and essential mineral elements in soluble form. In soil, biological decomposition breaks down...
The method is used for the determination of the mass fraction of caffeine and theobromine in tea and tea products, coffee and coffee products, cocoa and cocoa products, and dietary supplements.
The method is used for the determination of the mass fraction of total inorganic cations (ammonium potassium, sodium, magnesium, calcium) in all types of feedstuffs, compound feeds, fodders, premixes, fodder additives, and feed raw materials (of plant, animal, and mineral origin) by capillary electrophoresis.
The method is used for the determination of the mass concentration of oxalic, formic, fumaric, succinic, malic, citric, acetic, propionic, lactic, benzoic, sorbic, butyric acids in fodder additives and butyric acid in silage and haylage by capillary electrophoresis.
The method is used for the determination of the mass fraction of ascorbic acid and its salts in food additives and fodder additives (feed additives).The present method does not allow the determination of ascorbic acid in premixes.For the determination of acetic, benzoic, butyric, citric, formic, fumaric, lactic, malic, oxalic, propionic, sorbic, and succinic acids in fodder additives and butyric acid in silage and haylage use the method М 04-74-2012 (Lumex Instruments set, order No 0300001897).
The method is used for the determination of the mass fraction of methionine hydroxy analogue (DL-2-hydroxy-4-(methylthio) butyric acid (HMTBa) and its calcium salt) in fodder additives by capillary electrophoresis.
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The method is used for the determination of the mass fraction of free choline (synthetic and natural) in feedstuffs by capillary electrophoresis. The method can be applied for all types of feedstuffs, compound feeds, fodders, premixes, fodder additives, and feed raw materials. The present method does not allow the determination of bound choline.
The method allows determination of herbicides classified as phenoxycarboxylic acids, specifically: 2,4-dichloro-- phenoxybutyric acid (2,4-DB), 2,4-dichlorophenoxypropioni c acid (2,4-DP, Dichlorprop), 2,4-dichloropheno-- xyacetic acid (2,4-D), and phenoxyacetic acid in samples of natural, potable and treated waste water by capillary electrophoresis.
The method enables fast quantitative determination in feeds, mixed fodders, and raw materials of the following amino acids: arginine, lysine, tyrosine, phenylalanine, histidine, leucine and iso-leucine (total), methionine, valine, proline, alanine, glycine, cystine, tryptophan, aspartic and glutamic acids. Since during the sample decomposition asparagine and glutamine are hydrolyzed to aspartic and glutamic acids, respectively, the content of these two acids represents the total content of both the acids and the...
Alfalfa is a crop of the legume family and its scientific name is Medicago sativa. Alfalfa is a perennial plant of erect growth and is one of the most extended forage crops within temperate climate countries.
The maize is a crop of the gamine family coming from Centro America and with thousand of years old. The approximate world production is of 790 millions of tons of grain in 158 millions of hectares. The main producers are United States, China, Brazil, having nearly the 62% of the total world production.
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The potato started in the Andes and it is one of the crops of greater importance Worldwide. The potato came to Europe in the XVI century by two different ways: one was in Spain around 1570 and the other was by the British Islands among 1588 and 1593, from where it was expanded to the rest of Europe. The annual production is of 300 million tons of the fresh tuber expanded in 19.5 millions of hectares planted. Asia and Europe are the regions with bigger production worldwide, with more than the 80% of the production....
The sugar cane is a plant which assimilates easily the solar radiation, having a efficiency near the 2% of energy conversion incidental in the biomass. This capacity increases the commercial possibilities to the profit of numerous products to extract, in most of the cases of higher value and economic importance than sugar. The cultivation of sugar cane presents itself as an opportunity of high value against other types of cultivations. Nevertheless, this crop also suffers the problems of water shortage. Taking...
The onion is cultivated all around the world and it is one of the oldest vegetables. The world production is of 67 millions tons of bulbs (FAO, 2008). The countries of higher production of the world include United States, India, China, Pakistan, Turkish, Russia, Iran, Spain and Mexico. The onion is cultivated in 175 countries in mild, tropical and subtropical climatic conditions. The onion is basically a crop of fresh season.