Fertilizer manganese

Ma.nga.nese. Commonly used manganese fertilizer materials are manganous and manganic sulfates, chlorides, carbonates, oxides, frits, and chelates. Soil appHcation rates range from about 2 to 150 kg/hm of Mn. 

Agricultural Use. Citric acid and its ammonium salts are used to form soluble chelates of iron, copper, magnesium, manganese, and zinc micronutrients in Hquid fertilizers (97—103). Citric acid and citrate salts are used in animal feeds to form soluble, easily digestible chelates of essential metal nutrients, enhance feed flavor to increase food uptake, control gastric pH and improve feed efficiency. 

Basalt, granite, manganese nodules, shale, flint clay, iron formation materials, phosphate rock, fertilizers Calcareous loam soil, loess, polluted farmland soil, sand soil... 

Gennart J-P, Buchet J-P, Roels H, et al. 1992b. Fertility of male workers exposed to cadmium, lead or manganese. Am J Epidemiol 135 1208-1219. 

Sajwan K.S., Lindsay W.L. Effect of redox, zinc fertilization and incubation time on DTPA-extractable zinc, iron and manganese. Commun Soil Sci PlantAnal 1988 19 1-11. 

Swarup A., Anand S. Transformation and availability of iron and manganese in submerged sodic soils in relation to yield and nutrition of rice. Fertilizer News 1989 34 21-23. 

Schall192) recommended that the atomic absorption determination of magnesium, calcium, manganese, iron, and copper in fertilizers should be adopted as official, first action. 

Manganese chloride (MnClj) is used in the pharmaceutical industry as a dietary supplement and is added to fertilizers. 

Manganese(ll) oxide occurs naturally as manganosite [1313-12-8]. The mineral is found very rarely in nature. Manganese(ll) oxide is used in the fertilizer industry as a source of manganese in fertilizers in feedstuff formulations and as an intermediate in the production of several manganese compounds. 

The CO gas is easily removed, while the calcium phosphate and manganese oxide go into the molten slag, which has value in fertilizer manufacture because of the phosphate content (Section 9.6). Figure 17.9 shows that Mn, Si, and C will react preferentially with 02 before oxidation of the molten iron solvent begins, but S02 and P2Os have less negative AG°f... 

Manganese nutriture of the chick has been a fertile area of investigation for over 50 years. Wilgus and associates (1) in 1936 reported that Mn would prevent perosis in chicks. Numerous research publications have since expanded the knowledge of Mn homeostasis in the chick. The chick is unique with regard to Mn. It has a higher Mn requirement than it s mammalian counterpart, and the Mn absorption efficiency in chicks is thought to be less than in mammals (2). 

Metal contamination of soils is primarily due to the application of sewage sludge, manure, phosphate fertilizers, atmospheric deposition, and traffic emissions. The most common heavy metal ions found in soils are Zn, Cu, Ni, Pb, Cr, and Cd. As mentioned earlier (see Section 6.3.1.4), sequential extraction techniques can differentiate among the metal forms in a soil, typically the acid soluble fraction (e.g., carbonates), the reducible fraction (e.g., iron/manganese oxides), and the ox-idizable fraction (i.e., metals in low oxidation states). 

The methods of the recovery of molybdenum, copper and manganese from industrial wastes for agriculture and the fertilizer industry are described. These methods are characterized by low labour requirements, simple technology, and are waste-free, thus considerably decreasing the pollution hazard to the environment. 

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