Nitrogen phosphates

The three most important constituents of FYM are nitrogen, phosphate and potash. Additionally, there are the bulky organic parts derived mainly from the straw and the part of the food that has resisted digestion. Granstedt (2002) showed that the majority of the N (about 90%) in farmyard manure served to maintain the soil humus store and the long term capacity to supply nutrients. 

Mixed Fertilizer. The raw materials used to produce mixed fertilizers include inorganic acids, solutions, double nutrient fertilizers, and all types of straight fertilizers. The choice of raw materials depends on the specific nitrogen-phosphate-potassium (N-P-K) formulation to be produced and on the cost of the different materials from which they can be made. 

Fertilizers are usually designated with three numbers that indicate, respectively, the nitrogen, phosphate, and potash contents. Traditionally, the P content is expressed as %P2Os (= 2.29 x %P) and the K content as %K20 (= 1.20 x %K). Thus, a 20-3-4 fertilizer contains 20% N, 3% P as P2O5, and 4% potassium as K20. About 95% of all potash produced goes into fertilizers. 

For abbreviations see Table 14.2. U, unfertilized NPK, mineral nitrogen + phosphate + potassium fertilizer. 

Prior to fermentation, the hydrolysates (obtained at CS 1.94) were sterilized using 0.22-pm Gelman membrane filters (Ann Arbor, MI). pH-adjusted and detoxified hydrolysates were supplemented with salts, vitamins, nitrogen, phosphate, and magnesium sources. The nutrients were added in concentrated stock solutions to final concentrations as described before (24), except citric acid, which was replaced with EDT A (final concentration of 0.19 g/L). In the nonsupplemented medium, the supplements were replaced with sterile water. 

Winandy, J.E. and Richards, M.J. 2003. Evaluation of a boron-nitrogen (phosphate-free) fire retardant treatment. Part I. Testing of Douglas fir plywood per ASTM standard D-5516-96. J. Testing Eval., 31(2), 133-139. 

Fig. 24.7. World nitrogen, phosphate, potash, and total NPK consumption, 1970/71-2004/05.

Natural nitrogenous phosphates such as guano, bone-dust. 

For optimum growth both the absolute and relative quantities of the nutrients must be available in certain minimum amounts. The limiting proportions are approximately carbon nitrogen phosphate as 40 1 1. In aerobic conditions, the synthesis of carbon into cellular... 

SITC 56, Fertilizers nitrogenous, phosphatic, and other chemical and mineral fertilizers... 

Phosphate chemistry in soils has been studied more intensively than that of any other element save nitrogen. Phosphate added to soils is first adsorbed quickly and is later fixed into increasingly less soluble states as time increases. Despite this great effort, quantitative predictions of phosphate concentrations in soil solutions are poor and no techniques have been devised to release the large amounts of unavailable phosphate in soils, nor to prevent fixation of fertilizer phosphate by soils. The uncertainties about soil phosphate chemistry and the difficulty of increasing phos-... 

Municipal waste could be a valuable source of nitrogen, phosphate, and water for crops. Under careless management, however, waste application can lead to trace... 

Nitrophoska . [BASF AG] Complex nitrogen/phosphate fertilizer for agric., horticultural crops. 

Add organic fertilizers Organic fertilizers such as bonemeal or rock phosphate are useful when planting new shrubs and trees, or where the soil is poor. Poultry litter, or manure, provides nitrogen, phosphates, potash, and calcium. Comfrey... 

Fig. 47.6. The creatine phosphokinase reaction. The high-energy bond is the unusual nitrogen-phosphate bond, as indicated by the blue squiggle.

Ordinary cow manure from the barnyard is likely to contain about 10 lb. of nitrogen, 5 lb. of phosphate and 10 lb. of potash per ton. The amounts may be more or less than this, depending on the feed and on the way the manure is handled. At 12, 7 and 5 cents per lb. of nitrogen, phosphate, and potash, respectively, the value of such manure is near 2.00 per ton. Poultry manure, which is much higher in nitrogen and phosphate, may be worth 5.00 a ton. Sheep manure is similar in composition to poultry manure, whereas hog manure resembles cow manure. Poultry manure may double in nutrient content if it is allowed to accumulate on the floor of the hopse until it is thoroughly dry. 

Hites RK, Day HR (1992) Unusual persistence of DDTs in some western USA soils. Bull Environ Contam Toxicol 48(2) 259-264 Hong HS, Xu L, Guo LD (1996) Geochemistry of organic carbon, nitrogen, phosphate and silicon in sediments of southern Taiwan Strait. Research Symposium on Marine Biogeochemistry, pp.31-38... 

Bacteria have a number of requirements for growth. These include sources of energy, carbon, nitrogen, phosphate, sulfate, and various trace elements. They may include vitamins in certain cases. They also require to be grown at the correct... 

Urea Nitrogen Phosphate, Potassium Nitrate, Urea, Iron EDTA,... 

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