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Showing papers on "Potassium nitrate published in 2017"


Journal ArticleDOI
TL;DR: The Panel concluded that currently there was insufficient evidence to withdraw this ADI and that even using the highest nitrate‐to‐nitrite conversion factor the methaemoglobin levels produced due to nitrite obtained from this conversion would not be clinically significant and would result to a theoretically estimated endogenous N‐nitroso compounds (ENOC) production at levels which would be of low concern.
Abstract: The Panel on Food Additives and Nutrient Sources added to Food (ANS) provided a scientific opinion re-evaluating the safety of sodium nitrate (E 251) and potassium nitrate (E 252) when used as food additives. The current acceptable daily intakes (ADIs) for nitrate of 3.7 mg/kg body weight (bw) per day were established by the SCF (1997) and JECFA (2002). The available data did not indicate genotoxic potential for sodium and potassium nitrate. The carcinogenicity studies in mice and rats were negative. The Panel considered the derivation of an ADI for nitrate based on the formation of methaemoglobin, following the conversion of nitrate, excreted in the saliva, to nitrite. However, there were large variations in the data on the nitrate-to-nitrite conversion in the saliva in humans. Therefore, the Panel considered that it was not possible to derive a single value of the ADI from the available data. The Panel noticed that even using the highest nitrate-to-nitrite conversion factor the methaemoglobin levels produced due to nitrite obtained from this conversion would not be clinically significant and would result to a theoretically estimated endogenous N-nitroso compounds (ENOC) production at levels which would be of low concern. Hence, and despite the uncertainty associated with the ADI established by the SCF, the Panel concluded that currently there was insufficient evidence to withdraw this ADI. The exposure to nitrate solely from its use as a food additive was estimated to be less than 5% of the overall exposure to nitrate in food based on a refined estimated exposure scenario. This exposure did not exceed the current ADI (SCF, 1997). However, if all sources of exposure to dietary nitrate are considered (food additive, natural presence and contamination), the ADI would be exceeded for all age groups at the mean and the highest exposure.

77 citations


Journal ArticleDOI
TL;DR: Evaluated levels of nitrate and nitrate/nitrite in dry fermented sausages showed that nitrite is a relevant hurdle for control Salmonella and Listeria.

46 citations


Patent
24 May 2017
TL;DR: In this paper, a soilless vegetable culture nutrient solution is prepared from sodium nitrate, urea phosphate, potassium ammonium sulfate, magnesium chloride, Fe-EDTA, boric acid, manganese chloride and zinc sulfate.
Abstract: The invention relates to the field of nutrient solutions, in particular to a soilless vegetable culture nutrient solution and a preparation method. The soilless vegetable culture nutrient solution is prepared from sodium nitrate, urea phosphate, potassium nitrate, ammonium sulfate, magnesium chloride, Fe-EDTA, boric acid, manganese chloride, zinc sulfate, copper sulfate, sodium molybdate, mixed nitrogen-fixing bacterium solution and a nostoc extracting solution. The nutrient solution is simple and convenient to prepare, comprehensive in nutrient ingredient, high in biological activity and good in homogeneity, can decompose self-toxic materials produced by vegetables, remarkably improve the resistance, yield and the quality of the vegetables.

36 citations


Journal ArticleDOI
04 Jan 2017
TL;DR: A poly(N-methylpyrrole) based ion selective electrode (ISE) has been prepared by electro-polymerization of N-methyl pyrrole using potassium nitrate as the supporting electrolyte as discussed by the authors.
Abstract: A poly(N-methylpyrrole) based ion selective electrode (ISE) has been prepared by electro-polymerization of N-methylpyrrole using potassium nitrate as the supporting electrolyte. Electrochemical and chemical variables were used to optimize the potentiometric response of the electrodes and to maximize the selectivity for nitrate over potential interferences. The selectivity, longevity and stability of the ion-imprinted polymer give this electrode advantages over traditional nitrate ISEs. The best prototype electrode exhibits a linear potential response to nitrate ion within the concentration range of 5.0 × 10−6 to 0.1 M nitrate with a near Nernstian slope of −56.3 mV per decade (R2 = 0.9998) and a strong preference for the nitrate ion over other anions. The selectivity coefficients of the electrode were evaluated by the fixed interference method. The use of N-methylpyrrole has advantages over pyrrole in terms of selectivity and pH insensitivity.

29 citations


Journal ArticleDOI
TL;DR: In this paper, a mesoporous alumina supported potassium (MAK) catalyst was synthesized via the aqueous phase sol-gel pathway involving the one-pot simultaneous self-assembly of aluminium isopropoxide (Al(i-PrO) 3 ) and potassium nitrate (KNO 3 ).
Abstract: An experimental and kinetic study of the transesterification of canola oil with methanol for biodiesel production using a novel mesoporous alumina supported potassium (MAK) catalyst was conducted. The mesoporous alumina supported potassium (MAK) catalyst was synthesized via the aqueous phase sol-gel pathway involving the one-pot simultaneous self-assembly of aluminium isopropoxide (Al(i-PrO) 3 ) and potassium nitrate (KNO 3 ). The effect of reaction temperature (from 50 °C to 70 °C), methanol to canola oil molar ratio (M/O, 6:1–15:1) and catalyst loading (1.0 wt%–2.5 wt%, relative to the oil) on the biodiesel yield was investigated. The MAK catalyst achieved the highest of 91.9% biodiesel yield under the reaction conditions of: temperature of 70 °C, catalyst loading 2.0 wt% and M/O 12:1 in 24 h. The reaction rate increased with increasing reaction temperature, catalyst loading and M/O under the conditions tested. The kinetics of the transesterification was also determined and a literature kinetic model has been shown to well reproduce the experimental data. The activation energy was found to range from 20.9 to 23.4 kJ mol −1 . The MAK catalyzed transesterification was thought to follow an Eley–Rideal mechanism that the reaction started with methanol adsorption on the active sites of MAK, followed by surface reaction between the adsorbed methanol and triglyceride to yield methyl esters and glycerol.

25 citations


Journal ArticleDOI
TL;DR: In this article, two alkali borosilicate glass tubes, as used in pharmaceutical packaging, were subjected to chemical strengthening in four potassium nitrate salts, these mainly characterized by differing sodium and calcium content.
Abstract: Two alkali borosilicate glass tubes, as used in pharmaceutical packaging, were subjected to chemical strengthening in four potassium nitrate salts, these mainly characterized by differing sodium and calcium content. The heat treatment was at 450 °C and 465 °C for 4 h. The mechanical strength of the tubes was measured by 4-point bending tests. The compressive stress build-up at the glass surface was checked by Vickers indentations. The composition of the glass surface after ion-exchange was studied by EDS analyses. The results show that treatment increases the strength to twice the initial value, and that this is similar in the two glasses. A greater sodium content in the salt slightly decreases the exchanged layer depth and, consequently, the bending strength. Conversely, even a very low calcium content in the salt dramatically decreases the efficiency of chemical strengthening: it is shown that calcium blocks the sodium-potassium exchange, this being attributed to the thermodynamically favoured Na-Ca exchange on the glass surface with respect to the expected Na-K.

23 citations


Patent
15 Feb 2017
TL;DR: In this article, a compound organic fertilizer has outstanding slow-release performance and can effectively increase the rice yield and improve the rice quality, which is used for rice planting in rice fields.
Abstract: The invention discloses compound fertilizer having growth promotion and high slow-release properties and used for rice planting. The compound fertilizer is prepared from raw materials as follows: ammonium nitrate, monopotassium phosphate, urea, urea phosphate, calcium superphosphate, ammonium dihydrogen phosphate, potassium sulfate, magnesium sulfate, potassium nitrate, amino sodium dicarboxylate, Trichoderma, yeast powder, straw fermentation bacteria, cellulase, potassium mineral powder, rare earth, low-rank coal, silico-calcium powder, turf powder, fly ash, pine sawdust, kaolin, rice hull powder, poultry manure, maize straw, blue-green alga powder, dolomite, diatomite, calcite, humic acid, lignin, EDTA (ethylene diamine tetraacetic acid) chelate zinc, amino acid chelated molybdenum, dicyandiamide, phosphoric triamide and a modified slow-release agent. The invention further discloses a preparation method of the compound fertilizer having growth promotion and high slow-release properties and used for rice planting. The compound organic fertilizer has outstanding slow-release performance and can effectively increase the rice yield and improve the rice quality.

23 citations


Journal ArticleDOI
TL;DR: In this article, the United Graduate School of Agricultural Sciences at Tottori University in Tokyo, Japan, Matsue 690-1102, Japan and the University of Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan.
Abstract: 1Department of Agriculture, Faculty of Life and Environmental Science, Shimane University, Matsue 690-1102, Japan 2United Graduate School of Agricultural Sciences, Tottori University, Tottori 680-8553, Japan 3Faculty of Agriculture, Sylhet Agricultural University, Sylhet-3100, Bangladesh 4Olericulture Division, Horticulture Research Center, Bangladesh Agricultural Research Institute, Gazipur-1701, Bangladesh 5Faculty of Home Economics, Otsuma Women’s University, Chiyoda-ku, Tokyo 102-8357, Japan 6Faculty of Medicine, Shimane University, Izumo 693-8501, Japan 7Faculty of Agriculture, Tokyo University of Agriculture and Technology, Fuchu 183-8509, Japan

23 citations


Patent
Li Xu, He Ai'en, Li Wenchao, Bao Libin, Zha Mei 
31 May 2017
TL;DR: In this article, a tree is described as having a nutrient solution for growth in which every 1,000 ml of the solution contains 1, 1000 to 1,200 mg of potassium nitrate, 2,100 to 2,250 mg of urea, 1,900 to 2.050 mg of ammonium nitrate and 140 to 160 mg of magnesium sulfate.
Abstract: The invention discloses a nutrient solution for a tree. The nutrient solution is characterized in that every 1,000 ml of the nutrient solution contains 1,000 to 1,200 mg of potassium nitrate, 2,100 to 2,250 mg of urea, 1,900 to 2,050 mg of ammonium nitrate, 140 to 160 mg of magnesium sulfate, 1,200 to 1,230 mg of ammonium dihydrogen phosphate, 1,360 to 1,380 mg of calcium nitrate, 1,190 to 1,210 mg of monopotassium phosphate, 160 to 180 mg of manganese sulfate, 10 to 12 mg of zinc sulfate, 12 to 14 mg of ferric citrate, 160 to 180 mg of vitamin A, 120 to 140 mg of vitamin C, 80 to 120 mg of vitamin B6, 1 to 2 mg of boric acid, 0.3 to 0.4 mg of sodium molybdate, 0.15 to 0.31 mg of sodium iodide, 0.1 to 0.2 mg of folic acid, 1.5 to 1.7 mg of asparaginate, 1 to 2 mg of fulvic acid, 0.5 to 0.7 mg of indolebutyric acid, 0.8 to 1.2 mg of gibberellins and the balance of water. The nutrient solution for the tree has the beneficial effects that the nutrient solution does not contain a harmful substance, and can supply nutrients for growth to plants subjected to soilless culture.

20 citations


Journal ArticleDOI
TL;DR: Based on the potassium speciation in the biochar, the preparation cost, and the plant growth and rigor after the application of returning biochar to soil, 400°C and CO2 atmosphere were the most appropriate conditions for preparation of biochar.

20 citations


Journal ArticleDOI
TL;DR: In this article, two physical models with difference in depth of subsurface controlled drainage (40 and 60 cm) were constructed to assess the ability of HYDRUS-2D model to simulate the effect of sub-surface controlled drainage on nitrate loss of paddy fields.
Abstract: Agriculture is a major source of nitrogen usage and release to environment. Due to the effect of water movement on solute transport, investigating the effect of different management scenarios of irrigation and drainage could be useful for reducing nitrate loss and environmental pollution. This study is a scientific attempt to assess the ability of HYDRUS-2D model to simulate the effect of subsurface controlled drainage on nitrate loss of paddy fields. So, two physical models with difference in depth of subsurface controlled drainage (40 and 60 cm) were constructed. The tanks were filled with loam silty soil texture and then transplanted rice. 90 kg/ha potassium nitrate fertilizer was added in two stages of rice growth. Mid-season drainage was applied 26 days after transplantation. After 17 days, drains were closed again and applied flooded irrigation with 5-cm water stagnant layer above soil surface. During experiment, nitrate concentration of drain water was measured. HYDRUS-2D was calibrated with measured data in 60 cm drain depth and validated with 40 cm drain depth. HYDRUS-2D could simulate nitrate concentration with the coefficient of determination 0.95 and 0.89 in calibration and validation stages, respectively. The comparison between the volume of drain water and nitrate concentration from the drains in the depths of 40 and 60 cm indicated lower nitrate load in depth of 40 cm. The results obtained proved that the presence of hardpan layer in depth of 25 cm rather than the absence of it causes increase in 3 % of average nitrate concentration and reduce in 17 % of water discharge.

Patent
08 Feb 2017
TL;DR: Wang et al. as discussed by the authors disclosed a Chinese herb residue fermented organic fertilizer for wheat plantation, which contains rich organic matter, inorganic matter and growth elements, and can satisfy various nutrients for growth of wheat through Chinese herb residues and by addition of functional bacteria and the soil conditioner.
Abstract: The invention discloses a Chinese herb residue fermented organic fertilizer for wheat plantation Raw materials of the fertilizer comprise livestock manure, Chinese herb residue, corn straw, peat, rice husk, zinc humate, carbamide, monoammonium phosphate, potassium dihydrogen phosphate, potassium sulfate, ammonium sulfate, ferrous sulphate, boric acid, potassium nitrate, calcium nitrate, calcium dihydrogen phosphate, monosodium glutamate, sodium alginate, phosphorus slag, limestone, magnesium chloride, borax, diatomite, urea, functional bacteria, straw fermentation inocula, cellulase, brown sugar and a soil conditioner The invention also brings forward a preparation method of the above Chinese herb residue fermented organic fertilizer for wheat plantation The prepared organic fertilizer contains rich organic matter, inorganic matter and growth elements, and can satisfy various nutrients for growth of wheat Through Chinese herb residue and by addition of functional bacteria and the soil conditioner, yield and quality of wheat can be effectively enhanced

Journal ArticleDOI
TL;DR: A correlation between the effect of potassium nitrate in larvae and mammals is shown and opens the way to the utilization of insects for studying the in vivo acute and chronic toxicity of xenobiotics.
Abstract: Potassium nitrate (E252) is widely used as a food preservative and has applications in the treatment of high blood pressure however high doses are carcinogenic. Larvae of Galleria mellonella were administered potassium nitrate to establish whether the acute effects in larvae correlated with those evident in mammals. Intra-haemocoel injection of potassium nitrate resulted in a significant increase in the density of circulating haemocytes and a small change in the relative proportions of haemocytes but haemocytes showed a reduced fungicidal ability. Potassium nitrate administration resulted in increased superoxide dismutase activity and in the abundance of a range of proteins associated with mitochondrial function (e.g. mitochondrial aldehyde dehydrogenase, putative mitochondrial Mn superoxide dismutase), metabolism (e.g. triosephosphate isomerase, glyceraldehyde 3 phosphate dehydrogenase) and nitrate metabolism (e.g. aliphatic nitrilase, glutathione S-transferase). A strong correlation exists between the toxicity of a range of food preservatives when tested in G. mellonella larvae and rats. In this work a correlation between the effect of potassium nitrate in larvae and mammals is shown and opens the way to the utilization of insects for studying the in vivo acute and chronic toxicity of xenobiotics.

Patent
17 May 2017
TL;DR: In this paper, a high-strength composite salt core material for low-melting-point alloy casting was proposed, which comprises, by mass, 70%-100% of water-soluble inorganic salt and 0%-30% of reinforcement.
Abstract: The invention belongs to the technical field of casting, and particularly relates to a high-strength composite salt core material for low-melting-point alloy casting. The high-strength composite salt core material comprises, by mass, 70%-100% of water-soluble inorganic salt and 0%-30% of a reinforcement, wherein the water-soluble inorganic salt comprises one of low-melting-point salts including potassium nitrate and sodium nitrate, and at least one of high-melting-point salts including potassium chloride, sodium chloride, potassium bromide and sodium bromide, and positive ions of the low-melting-point slats are the same as positive ions of the high-melting-point salts. The invention further discloses a preparation method of a high-strength composite salt core, and an obtained salt core product. The prepared composite salt core has extremely high bending strength, excellent hygroscopicity and small volume shrinkage, and the comprehensive performance is excellent. In addition, the preparation technique of the high-strength composite salt core is simple, raw materials are cheap, and industrial production is easy.

Journal ArticleDOI
TL;DR: In this paper, the authors measured the conductivity of heterogeneous ion exchange membranes and found that the radius of the semicircle of the impedance hodograph is inversely proportional to the diffusion coefficient of a counter ion and directly proportional to fraction of the intergel phase of the membrane.

Journal ArticleDOI
TL;DR: The K-fertilizers derived from sea bittern—a waste product of salt industry—can thus be economically used to improve crop production sustainably and lead to enhancement in growth, productivity and quality of maize which related well with higher photosynthesis, nutrient uptake and soil quality parameters.
Abstract: Aim: Many countries import potassic fertilizers due to dearth of K-mineral deposits. Therefore processes to obtain K-nutrient sources from sea bittern were developed by our Institute. The present investigation evaluated the fertilizer potential of three different sea bittern-derived (SBD) potassium forms developed viz., potassium schoenite, potassium nitrate and potassium ammonium sulphate on maize productivity in two cropping seasons. Methods: The pot and field experiments consisted of four treatments, wherein the three K forms were applied at the recommended rate of 40 kg K2O ha-1 and were compared with commercially used sulphate of potash. The effect of these fertilizers on different parameters of plant and soil were evaluated. Results: The application of SBD-potassic fertilizers led to enhancement in growth, productivity and quality of maize which related well with higher photosynthesis, nutrient uptake and soil quality parameters. On an average all the three forms of sea bittern-derived potash enhanced yield of maize over control by 22.3% and 23.8%, respectively, in pot and field trials. The best performance was under SBD-KNO3, which also recorded the highest benefit: cost ratio of 1.76. Conclusion: The K-fertilizers derived from sea-bittern—a waste product of salt industry—can thus be economically used to improve crop production sustainably.

Journal ArticleDOI
TL;DR: The detrimental effects of salt on the seed germination, seedling growth, mitotic activity and chromosomal aberrations was dramatically alleviated in varying degrees by KNO3 application.
Abstract: In this work, the effects of potassium nitrate (KNO3) on the seed germination, seedling growth (radicle length, radicle number and fresh weight), mitotic activity and chromosomal aberrations of Allium cepa L. germinated under both normal conditions and salt stress were studied. The final germination percentages, radicle lengths, radical numbers and fresh weights of onion seeds germinated in the medium with KNO3 alone were statistically the same as ones of the control seeds germinated in distilled water medium. In addition, the mitotic index in root tip meristems of A. cepa seeds germinated in the medium with KNO3 alone demonstrated a decrease according to ones of the control seeds germinated in distilled water medium, while their frequency of chromosomal aberrations showed an increase according to the control. On the other hand, salt stress considerably inhibited the seed germination and seedling growth of A. cepa. Furthermore, it markedly decreased the mitotic index in root tip meristems of the seeds and increased the number of chromosomal aberrations. The detrimental effects of salt on the seed germination, seedling growth, mitotic activity and chromosomal aberrations was dramatically alleviated in varying degrees by KNO3 application.

Patent
26 Apr 2017
TL;DR: In this article, an organic and inorganic compound fertilizer special for promoting growth and improving disease resistance of lotus roots is presented, which is prepared from fermented chicken manure, wheat straw, mushroom residue, plant ash, wormcast, urea, ammonium zinc phosphate, ammonion polyphosphate, potassium nitrate, trace elements, compound bacteria, humic acid, chitosan, alginic acid.
Abstract: The present invention discloses to an organic and inorganic compound fertilizer special for promoting growth and improving disease resistance of lotus roots. The compound fertilizer is prepared from fermented chicken manure, wheat straw, mushroom residue, plant ash, wormcast, urea, ammonium zinc phosphate, ammonium polyphosphate, potassium nitrate, trace elements, compound bacteria, humic acid, chitosan, alginic acid, 3, 4-dimethylpyrazole phosphate, sodium tetraphenylborate, ammonium citrate, potassium thiosulfate, polyaspartic acid, dicyandiamide, sodium nitrophenolate, yttrium nitrate, nanocarbon, rotenone and sucrase. The compound fertilizer is reasonable in formula, balanced in nutrition, capable of promoting the growth of the lotus roots and improving disease resistance of the lotus roots at the same time, and high in fertilizer utilization rate.


Patent
15 Sep 2017
TL;DR: In this article, the preparation and application of a polyaspartic acid liquid fertilizer is described, which is applicable to green and safe production of crops, is applied to root irrigation, micro irrigation, drop irrigation, flashing fertilization or leaf fertilization in fruit enlarging periods of fruits and solanaceous vegetables and is capable of promoting absorption of nutrients by crops, increasing the sweetness and contents of soluble solids and vitamin C of vegetables and fruits, and improving quality and appearance of agricultural products.
Abstract: The invention discloses preparation and application of a polyaspartic acid liquid fertilizer. The polyaspartic acid liquid fertilizer consists of the following raw materials: 50-200ml/L of polyaspartic acid, 10-100g/L of monopotassium phosphate, 100-300g/L of potassium nitrate, 10-100g/L of potassium sulfate, 50-200g/L of biochemical potassium fulvic acid, 10-50g/L of chitosan, 0.1-0.5g/L of boron, 0.01-0.05g/L of copper, 0.1-0.5g/L of iron, 0.1-0.5g/L of manganese, 0.1-0.5g/L of zinc, 0.05-0.1g/L of calcium and the balance of a root protection bacterial solution. The polyaspartic acid liquid fertilizer is free of any plant growth regulating agents or toxic or harmful substances, is applicable to green and safe production of crops, is applied to root irrigation, micro irrigation, drop irrigation, flashing fertilization or leaf fertilization in fruit enlarging periods of fruits and solanaceous vegetables and is capable of promoting absorption of nutrients by crops, increasing the sweetness and the contents of soluble solids and vitamin C of vegetables and fruits, and improving quality and appearance of agricultural products. Moreover, nutrient elements can be activated, chemical fertilizer loss is reduced, the utilization rate of chemical fertilizers is increased by 30% or greater, and the yield of crops is increased by 40% or greater at least.

Patent
18 Jan 2017
TL;DR: In this article, a bio-compound fertilizer for preventing pseudomonas solanacearum and a preparation method thereof is described, which can meet the requirements of tobacco in the growth and development process for nutrients, adjust the synergistic effect between all nutrient elements, strengthen physiological functions of tobacco plants, increase the organism stress resistant activity of tobacco, activate the soil granular structure, balance soil microorganism strains, restrain reproduction of soil harmful bacteria and insects, durably coordinate nutrient supply, and remarkably improve the bacterial disease resistant capacity of tobacco.
Abstract: The invention discloses a bio-compound fertilizer for preventing pseudomonas solanacearum and a preparation method thereof. The bio-compound fertilizer comprises decomposed manure, ammonium nitrate phosphate, monoammonium phosphate, potassium nitrate, potassium sulphate, potassium chloride, boric fertilizer, chelated zinc, chelated iron, chelated copper, chelated manganese, manganese molybdenum, gamma-polyglutamic acid, allicin and other auxiliaries. The bio-compound fertilizer can meet the requirements of tobacco in the growth and development process for nutrients, adjust the synergistic effect between all nutrient elements, strengthen physiological functions of tobacco plants, increase the organism stress resistant activity of tobacco, activate the soil granular structure, balance soil microorganism strains, restrain reproduction of soil harmful bacteria and insects, durably coordinate nutrient supply, improve the bacterial disease resistant capacity of tobacco, remarkably improve the tobacco quality and ensure the yield level.

Patent
22 Sep 2017
TL;DR: The water-retaining slow-release fertilizer special for Chinese cabbages is described in this paper, which is suitable for Chinese Cabbages and can improve the quality of the Chinese cabbage.
Abstract: The invention discloses water-retaining slow-release fertilizer special for Chinese cabbages. The water-retaining slow-release fertilizer is prepared from rapeseed dregs, carbonized straw, peat, duck dung, pleurotus ostreatus residues , urea, diammonium phosphate, calcium superphosphate, potassium sulfate, potassium chloride, potassium nitrate, polyurethane, magnesium hydroxide, quicklime, trace elements, a water-retaining slow-release agent, bacillus subtilis, bacillus licheniformis, yttrium nitrate, rotenone, nano-tea polyphenols, nano-hydroquinone and citric acid. The water-retaining slow-release fertilizer special for the Chinese cabbages is reasonable in formula and good in water-retaining and slow-release effects, the growth of the Chinese cabbages can be promoted, and the quality of the Chinese cabbages is improved.

Patent
04 Jan 2017
TL;DR: In this paper, a hot melting method and a preparation method for solid water-soluble fertilizer is proposed. But the method is not suitable for the use of high-purity industrial-grade products.
Abstract: The invention applies in the technical field of agriculture and particularly relates to solid water-soluble fertilizer prepared by a hot melting method and a preparation method thereof. The solid water-soluble fertilizer comprises, by weight, 25-34.6% of urea, 6.5-25% of monoammonium phosphate, 20-30% of potassium sulfate, 16-30% of potassium nitrate, 0-10% of potassium humate, 0-10% of calcium chloride, 0-10% of magnesium sulfate, 0-5% of ferrous sulfate, 0-5% of zinc sulfate, 0-2% of copper sulfate, 0-5% of boric acid and 0-5% of ammonium molybdate. Type of nutritional elements in the solid water-soluble fertilizer prepared by the method is complete, and the solid water-soluble fertilizer can be blended according to nutrient needs of different crops and is scientific and reasonable in matching; raw materials are all high-purity industrial-grade products, so that the solid water-soluble fertilizer contains few impurities and is environment-friendly; the solid water-soluble fertilizer produced by utilizing the method is exquisite in appearance, uniform in granularity, high in dispersion speed in water, extremely easy to wet, high in dissolution speed, low in water content and free of caking and bloating during long-time storage.

Patent
26 Apr 2017
TL;DR: The compound organic fertilizer has excellent slow-release property and can effectively improve the yield and quality of crops as mentioned in this paper. But, it is not suitable for rice planting as it is unsuitable for rice harvesting.
Abstract: The invention discloses compound organic fertilizer used for rice planting and having the high slow release property. The compound organic fertilizer is prepared from raw materials as follows: ammonium nitrate, monopotassium phosphate, urea, urea phosphate, calcium superphosphate, ammonium dihydrogen phosphate, potassium sulfate, magnesium sulfate, potassium nitrate, amino sodium dicarboxylate, trichoderma, yeast powder, a straw fermentation agent, cellulase, potassium mineral powder, mica powder, chitin, talc, turf powder, fly ash, conch powder, furfural residues, rice hull powder, poultry manure, corn straw, rapeseed cakes, dolomite, diatomite, calcite, humic acid, lignin, sodium bentonite, EDTA chelate, amino acid chelate, dicyandiamide, phosphoryl triamide, a slow release agent and a soil conditioning agent. The invention further provides a preparation method of the s compound organic fertilizer used for rice planting and having the high slow release property. The compound organic fertilizer has excellent slow release property and can effectively the yield and quality of crops.

Patent
11 Jan 2017
TL;DR: In this paper, a preparation method of foliar fertilizer for vegetables and fruits is presented, which includes: taking straw, tobacco leaves and mushroom dregs, airing, crushing, adding the dry particles into a sodium bicarbonate solution, heating, cooling, filtering, and adding the wet particles into water, regulating pH to 5.0-6.0, adding cellulase and protease to perform enzymolysis, filtering enzymatic hydrolysate to obtain feed liquid, performing vacuum concentration on the obtained feed liquid and adding sodium alginate, gelatin
Abstract: The invention provides a preparation method of foliar fertilizer for vegetables and fruits. The preparation method includes: taking straw, tobacco leaves and mushroom dregs, airing, crushing, adding the dry particles into a sodium bicarbonate solution, heating, cooling, filtering, adding the wet particles into water, regulating pH to 5.0-6.0, adding cellulase and protease to perform enzymolysis, filtering enzymatic hydrolysate to obtain feed liquid, performing vacuum concentration on the obtained feed liquid, adding sodium alginate, gelatin and hydroxyethyl starch into the concentrated solution, dispersing, standing for 2-5 hours, adding calcium nitrate tetrahydrate, potassium nitrate, diammonium hydrogen phosphate, magnesium sulfate heptahydrate, manganese sulfate, nicotinamide, amino acid, boric acid, lecithin, humic acid and alkyl glucoside, and stirring to obtain the foliar fertilizer. The preparation method has the advantage that the foliar fertilizer prepared by the method can improve leaf photosynthesis, promote the nutritional growth of grapes, lower the content of soluble acid, evidently increase sugar-acid ratio, improve the coloring of red grapes and improve the flavor and quality of the grapes.

Patent
15 Aug 2017
TL;DR: The tomato soilless culture method is green and environmental protection, can reasonably utilize planting space in a planting process, and the matrix and nutrient solution are rich in nutrition; the tomato grown by the method is nontoxic and pollution free, and suitable for mass production and promotion as discussed by the authors.
Abstract: The invention relates to a tomato soilless culture method, and belongs to the soilless culture technical field; the method comprises the following steps: matrix preparation, water soluble fertilizer preparation, greenhouse equipment configuration, wobble plate soil loading, spot planting and earthing, watering germination, colonization preparation, colonization, colonization management and harvesting; the matrix comprises coco coir, straw powder, turf, vermiculite, mushroom slag, wood chip, expanded perlite and iron sheet dendrobium; the water soluble fertilizer comprises a first nutrient solution and a second nutrient solution; the first nutrient solution comprises calcium nitrate, potassium nitrate, ammonium nitrate, potassium dihydrogen phosphate, potassium sulfate, magnesium sulfate, EDDHA-PE-6, manganese sulfate, copper sulphate, ammonium molybdate, borax, zinc sulfate and water; the second nutrient solution refers to trace element nutrient solution; the tomato soilless culture method is green and environmental protection, can reasonably utilize planting space in a planting process, and the matrix and nutrient solution are rich in nutrition; the tomato grown by the method is nontoxic and pollution-free, and suitable for mass production and promotion.

Proceedings ArticleDOI
03 Apr 2017
TL;DR: In this paper, the authors present a table of contents and a list of FIGURE FIGURES, ACKNOWLEDGEMENTS, and NOMENCLATURE.
Abstract: ......................................................................................................................ii DEDICATION ..................................................................................................................iv ACKNOWLEDGEMENTS ...............................................................................................v NOMENCLATURE ......................................................................................................... vi TABLE OF CONTENTS ................................................................................................ vii LIST OF FIGURES .......................................................................................................... ix LIST OF TABLES ......................................................................................................... xii

Patent
22 Mar 2017
TL;DR: In this paper, a method for using biogas slurry to prepare a liquid manure containing humic acid is presented, which can not only achieve full amount of use of the bio-gas slurry, and can also promote an additional value of the biogAS slurry; meanwhile, the prepared liquid manure product is good in quality, and is high in content of the humic acids, content of nitrogen phosphorous and content of potassium.
Abstract: The invention discloses a method for using biogas slurry to prepare a liquid manure containing humic acid. The preparing method of the liquid manure containing the humic acid comprises the steps of uniformly mixing potassium nitrate, potassium fulvic acid, ferrous sulfate, borax, diethyl aminoethyl hexanoate and naphthaleneacetic acid sodium salt in proportion to obtain a base fertilizer containing the humic acid and major elements, uniformly mixing the base fertilizer, the biogas slurry, a chelating agent and a stabilizer in proportion, continuously heating and stirring the mixture to obtain a black viscous liquid manure, cooling the liquid manure and uniformly mixing the liquid manure with diammonium hydrogen phosphate, ammonium nitrate phosphate, and amino acid to obtain the liquid manure containing the humic acid. The liquid manure containing humic acid developed from the method can not only achieve full amount of use of the biogas slurry, and can also promote an additional value of the biogas slurry; meanwhile, the prepared liquid manure product is good in quality, and is high in content of the humic acid, content of nitrogen phosphorous and content of potassium; in addition, the liquid manure containing humic acid developed from the method has the advantages that the processing technology is simple in procedures and efficient.

Journal ArticleDOI
TL;DR: 10% strontium chloride and 5% potassium nitrate combined with 2% fluoride downplayed morphological changes to the enamel, without interfering with the effectiveness of the bleaching process.
Abstract: Background Dental whitening has been increasingly sought out to improve dental aesthetics, but may cause chemical and morphological changes in dental enamel surfaces. Objective This study evaluated in vitro the effect of 10% strontium chloride and 5% potassium nitrate with fluoride on bovine enamel, through tristimulus colorimetry, Knoop microhardness (KHN), and roughness after bleaching with 35% hydrogen peroxide (HP). Methods The specimens were divided into three groups (n=15): GControl received bleaching treatment with 35% HP; GNitrate received bleaching with 35% HP followed by the application of 5% potassium nitrate with 2% sodium fluoride; and GStrontium received bleaching with 35% HP followed by the application of 10% strontium chloride on the enamel. Next, five specimens of each experimental group were subjected to KHN and tristimulus colorimetry tests, and 10 specimens were subjected to surface roughness (SR) tests. The values obtained for the different groups were compared through analysis of variance (ANOVA) followed by a post-hoc Tukey-Kramer test in addition to Student's T-test for paired data. Results In the intergroup comparison, KHN final differed statistically (p 0.05). Conclusion 10% strontium chloride and 5% potassium nitrate combined with 2% fluoride downplayed morphological changes to the enamel, without interfering with the effectiveness of the bleaching process.

Patent
08 Sep 2017
TL;DR: In this article, a slow-release fertilizer for potatoes is proposed, which contains the following raw materials in parts by weight: fermented cow dung, charcoal, biogas residues, polypeptide urea, ammonium nitrate, calcium superphosphate, calcium magnesium phosphate, modified attapulgite, lime powder, vermiculite powder, citric acid, tartaric acid, sodium humate, brassinolide, xylitol residues, sesame shells and artemisia vulgaris powder.
Abstract: The invention discloses a slow-release fertilizer for potatoes. The slow-release fertilizer for potatoes contains the following raw materials in parts by weight: fermented cow dung, charcoal, biogas residues, polypeptide urea, ammonium nitrate, calcium superphosphate, calcium magnesium phosphate, potassium sulfate, potassium nitrate, modified attapulgite, lime powder, vermiculite powder, citric acid, tartaric acid, sodium humate, gibberellins, brassinolide, xylitol residues, sesame shells and artemisia vulgaris powder. The slow-release fertilizer for potatoes disclosed by the invention is applied as a base fertilizer which is durable in fertilizer efficiency, free of topdressing, reasonable in formula and high in utilization ratio. After application, soil can be fertilized, the physical and chemical properties of the soil can be effectively improved, the soil is hard to harden, the output and quality of potatoes are improved, and sustained development of agriculture of China is promoted.