Abstract: Methods and apparatuses for depositing agents relatively deep within pores of bio-char. Bio-char is first produced in an airtight oven by heating biomass feedstock. The bio-char is then cooled and steam is diffused into the pores of the bio-char. The steam-laden bio-char is immersed in a liquid bath containing soluble agents that are to be deposited in the pores of the bio-char. The liquid bath cools the char to below the condensation temperature of the steam, whereupon the condensing steam generates a partial vacuum within the pores, drawing the liquid into the pores. The bio-char is then removed from the liquid bath and dried so that the liquid within the pores evaporates, leaving behind the soluble agent. Accordingly, the invention yields bio-char that has soluble agent embedded relatively deep within its pores.

Abstract: A process for the manufacture of an aqueous composition that is a combination of a fungicide and fertilizer comprising the following steps: (1) dissolving phosphorous acid in phosphoric acid to form a solution of an acid mixture; (2) reacting the acid mixture of step (1) with an aqueous potassium hydroxide solution at a temperature of about 65° C. to about 260° C. in a continuous reactor while maintaining the ratio of potassium to phosphorous in various mole ratios thereby forming a reaction mixture comprising potassium phosphates, potassium polyphosphates, potassium phosphites, and potassium polyphosphites and potassium phosphate phosphite copolymers; and, (3) cooling the reaction mixture rapidly at least 1° C. to 60° C., to below about 35° C. to about 65° C. Using a similar process a composition having fungicidal properties is prepared by reaction phosphoric acid with potassium hydroxide. The reaction mixtures prepared according to each of the above processes are also part of this invention.

Abstract: A multiple effect plant growth promoting mixture is provided that includes a first plurality of fertilizer granules, each containing a quantity of a bioavailable source of nitrogen, phosphorus, or potassium. A second plurality of granules, each containing an active agent effective in inhibiting an organism interfering with plant growth are intermixed with the fertilizer granules. The fertilizer granules are substantially devoid of the active agent adhering to the fertilizer granule and the active agent granules are substantially devoid of fertilizer. The potential for cross contamination being associated with granule breakage associated with intermixing and transport.

Abstract: A coating oil composition and methods of using the composition for dust control is provided. The coating oil comprises utilizing a by-product from the manufacture of biodiesel and/or fatty alkyl esters, wherein the by-product comprises C6-C24 saturated and unsaturated fatty acids, C6-C24 saturated and unsaturated fatty acid salts, methyl esters, ethyl esters and combinations thereof.

Abstract: The invention provides a method for the combined production of (I) a sulfur oxide containing product and (II) a fertilizer selected from a group consisting of ammonium nitrate, ammonium phosphates and a combination thereof, through an indirect neutralization of ammonia with an acid selected from the group consisting of nitric acid, phosphoric acid and a combination thereof, the method comprising: a. contacting a precipitate containing calcium sulfite with a solution of nitric acid and a solution of ammonia in two separate steps, to form the fertilizer, the sulfur oxide containing product and a precipitate containing calcium hydroxide; and b. separating at least portion of the fertilizer, the sulfur oxide and the calcium hydroxide into three separated streams.

Abstract: Kimberlite based fertilizer products are produced by treating micronized Kimberlite with alkali or first acid then alkali or by mixing the micronized kimberlite with DAP or NPK fertilizer.

Abstract: The efficiency of applied phosphorus can be improved by applying phosphorus as a coating onto plant growth (roots and shoots) or by applying phosphorus as a coating on prills or granules of other forms of fertilizers. The composition comprises (a) monoammonium phosphate, (b) struvite and (c) magnesium sulphate. The first two ingredients ensure that there is a source of rapidly available phosphorus (MAP) and a source of more slowly available phosphorus (STRUV). The third ingredient is to provide a source of sulphate which will, in the area surrounding the coated product following application thereof to the soil, act to stop ambient calcium from reacting with the phosphate thereby rendering it inactive.

Abstract: This invention provides pH buffered plant nutrient compositions, methods for fertilizing a plant growing or a seed germinating in a hydroponics system, methods for growing a plant in a hydroponics system, and methods for making a pH buffered plant nutrient composition. The compositions and methods of this invention are useful with distilled water, deionized water, filtered water, and United States municipal tap water. The compositions and methods of this invention are useful with most of the municipal water supplies in the United States. pH buffering agents useful in the practice of this invention include phosphate buffers, aquarium buffers, 2-[N-morpholino]ethanesulfonic acid, and mixtures thereof.

Abstract: Process for the manufacture of sulphur-containing fertilizer compositions, comprising the steps of: a} providing a slurry of at least one phosphate-based fertilizer material selected from the group consisting of ammonium phosphates, ammonium phosphate based nitrogen-phosphorus-potassium (NPK) compounds, super phosphates and partially acidulated phosphate rocks; b) bringing said slurry into contact with at least one anionic surfactant and elemental sulphur; c) introducing the mixture obtained in step b} into a granulator unit in order to obtain granules of the fertilizer composition, wherein the at least one phosphate-based fertilizer material is present in an amount in the range of at least 50 wt. %, the elemental sulphur is present in an amount in the range of from 1 to 25 wt. % and the anionic surfactant is present in an amount in the range of from 0.001 to 3 wt. % based on the overall weight of the fertilizer composition. The present invention also provides a fertilizer composition.

Abstract: According to the present invention, there is provided a process for the manufacture of sulphur-containing fertilizer compositions, said process comprising the steps of: a) providing a slurry of at least one phosphate-based fertilizer material selected from the group consisting of ammonium phosphates, ammonium phosphate based nitrogen-phosphorus-potassium (NPK) compounds, super phosphates and partially acidulated phosphate rocks; b} bringing said slurry into contact with at least one surfactant and elemental sulphur; and c) introducing the mixture obtained in step b) into a granulator unit in order to obtain granules of the fertilizer composition, wherein the elemental sulphur is present in an amount in the range of form 1 to 25 wt. %, based on the total weight of the fertilizer composition The present invention also provides a fertilizer composition.

Abstract: Preferred aspects of the present invention provide ammonium nitrate compositions comprising ammonium nitrate and at least one stabilizing agent, and preferably a third compound. In certain preferred embodiments, the stabilizing agent, together with third compound, is present under conditions and in amounts effective to substantially reduce the detonation sensitivity of the composition and/or to otherwise improve a desired property of the composition.

Abstract: The present invention is related to a formulation based on (i) micronized natural calcite mineral (MC) of particles size from 500 nm to 5 ?m, which contains variable amounts of calcite (CaCO3), dolomite [CaMg (CO3)2], ankerite [Ca (Mg, Fe, Mn, Zn) (CO3)2], and quartz (SiO2); (ii) micronized zeolite of particles size from 500 nm to 5 ?m, of general formula (Mn+) x/n [(AlO2) x (SiO2) y].mH2O (MZ) wherein Me=Na, K, Ca, Mg, Fe, Zn, Mn, Cu; whereas ratio of silicon to aluminum, y:x is between 1:1 to >10:1; whilst m is number of crystalline water molecules which can be from 0 to >20; and of (iii) one or more additives which, with components (i) and (ii), yiled in the final form of the formulation suitable for practical use: powder; wettable powder; concentrate for suspension; or granules; and/or which enhance basic biological actions of (i).

Abstract: A water-dispersible particle for delivery of fertilizer to a plant is disclosed. After delivery wetting of the particles causes particle dispersion so as to prevent secondary pick up to the particles. Methods for making and using the water-dispersible particle are described.

Abstract: An apparatus and a method for treating a composition containing toxic materials or biosolids, wherein the apparatus has a hydraulically sealable top that can be opened to allow loading of the composition or closed to seal the apparatus. The apparatus also includes a reagent injection system for injecting a reagent into the apparatus, a mixing device for mixing the composition with the reagent, a heater system for heating the composition, or the mixture of the composition and the reagent, an internal vapor recovery system for recovering gases, vapors, and odors from the toxic materials or biosolids, or from the reagents, a reagent recovery system for recovering the reagent after it has been mixed with the composition, a discharge mechanism for discharging the treated composition, and a control panel comprising temperature and pressure measurements.

Abstract: A solid free-flowing particulate fertilizer composition is provided, as well as a method of manufacturing same. The composition has low tendency to caking, is easy for storage and manipulation, dissolves rapidly and completely in water, and can be used directly as a fertilizer or serves in the preparation of concentrated aqueous fertilizer compositions comprising otherwise scarcely soluble nutrients.

Abstract: The invention describes a new method for treating sludge, which can result in the production of high nitrogen organically-augmented inorganic fertilizer that incorporates municipal sludges or biosolids or organic sludges that can compete with traditional fertilizers such as ammonium phosphate, ammonium sulfate and urea on the commodity fertilizer marketplace. The method takes advantage of the thixotropic property of dewatered biosolids or organic sludge to create a pumpable paste-like material from the biosolids or organic sludge that is then treated with an oxidizer to reduce odorant effects and an acid. This mix is then interacted with concentrated sulfuric and or phosphoric acids and an ammonia source or alternatively a hot or molten melt or salt of ammonium sulfate/phosphate to form a fertilizer mix. The present invention controls the heat, atmospheric pressure and retention time of the fertilizer mix in the reaction vessel.

Abstract: The present invention relates to the use of ulvans, in particular extracted from green algae of the genus Ulva or Enteromorpha, or of ulvan-derived oligosaccharides, as elicitors of mechanisms for nitrogen absorption and protein synthesis. It also relates to a fertilizing product containing ulvans and to the use thereof in a plant treatment method.

Abstract: This invention provides pH buffered plant nutrient compositions, methods for fertilizing a plant growing or a seed germinating in a hydroponics system, methods for growing a plant in a hydroponics system, and methods for making a pH buffered plant nutrient composition. The compositions and methods of this invention are useful with distilled water, deionized water, filtered water, and United States municipal tap water. The compositions and methods of this invention are useful with most of the municipal water supplies in the United States. pH buffering agents useful in the practice of this invention include phosphate buffers, aquarium buffers, 2-[N-morpholino]ethanesulfonic acid, and mixtures thereof.

Abstract: The invention relates to systems and methods for making fertilizer compositions out of potassium phosphate brine solutions recovered from meat processing operations. In an embodiment, the invention includes a method for making a fertilizer composition including filtering a meat-processing waste solution, and measuring the concentration of a salt in the meat-processing waste solution. In an embodiment, the invention includes a method for disposing of a meat-processing brine solution including filtering the meat-processing brine solution, and measuring the concentration of a salt in the meat-processing brine solution.

Abstract: This invention relates to insecticidal fertilizer mixtures containing (a) an agonist or antagonist of ion channels in the insect nervous system; (b) a fertilizer; (c) optionally, an adherent; and (d) optionally, one or more auxiliaries and/or carrier materials.

Abstract: This invention provides pH buffered plant nutrient compositions, methods for fertilizing a plant growing or a seed germinating in a hydroponics system, methods for growing a plant in a hydroponics system, and methods for making a pH buffered plant nutrient composition. The compositions and methods of this invention are useful with distilled water, deionized water, filtered water, and United States municipal tap water. The compositions and methods of this invention are useful with most of the municipal water supplies in the United States. pH buffering agents useful in the practice of this invention include phosphate buffers, aquarium buffers, 2-[N-morpholino]ethanesulfonic acid, and mixtures thereof.

Abstract: A water-dispersible particle is provided that includes a sulfate or phosphate of potash in an amount ranging from 5% to 99.9% by weight of the total dry weight of the particle. A binder component is present in an amount from 1% to 95% by weight. The sulfate or phosphate of potash and the binder component on that contact with water causes particle dispersion into more than 100 pieces. A process for making a water-dispersible particle includes mechanical aggregation of a sulfate or phosphate of potash into a pellet. A binder component is present in the particle in an amount ranging from 1% to 95% by weight. The sulfate or phosphate of potash and the binder component are present in a form such that contact with water causes particle dispersion into more than 100 pieces. The pellet is then dried and ready to be applied.

Abstract: A controlled release fertilizer composition and methods to produce the controlled release fertilizer composition are described. The controlled release fertilizer composition comprises a water soluble fertilizer core that is coated with a polymeric layer, intermediate layer, and a sulfur layer. If desired, the sulfur layer can be coated with an outer water-insoluble layer.

Abstract: Improved, solid water-soluble fertilizer (WSF) compositions are presented which comprise at least one acid (optionally nutritive) and at least one basic fertilizer component. In one or more embodiments of the present invention, the WSF compositions demonstrate improved solubility of one or more nutrients or additives in solution, do not require additional dissolution aids or anti-caking agents, demonstrate fast dissolution times, produce precipitate free solutions, are readily compounded without intermediate wetting or drying steps, do not generate gas, and demonstrate improved stability under typical usage conditions. Finally, the WSF compositions may be used in improved processes for the creation of stock solutions, optionally with cold water, and/or delivery of nutrients to plants.

Abstract: An ammonia and fertilizer production process is based on partial oxidation of fossil fuel, which co-produces polycarbonsuboxide. The four step process is low-cost and low-carbon-dioxide emission. It comprises the steps of reacting fossil fuel with oxygen in air and steam in an electric discharge plasma to produce a gas exit stream of polycarbonsuboxide, hydrogen with associated nitrogen (110); cooling the gas stream to condense and separate the polycarbonsuboxide as a solid polymer (120); compressing the gas stream to pressures for synthesis of ammonia (140); and, converting the gas stream to ammonia by employing a catalytic converter (150). Optional steps involve gas cleanup, which include removal of contaminants from the gas stream and adding hydrogen or nitrogen to the gas stream to adjust the ratio of hydrogen to nitrogen to three to one, respectively, prior to converting the gas stream to ammonia (130).

Abstract: Blends of fertilizer granules and highly absorbent cellulosic granules carrying one or more pesticidal or other active ingredients that resist the formation of actives dust or segregation of the granules and that ensure even and efficient application of both the fertilizer and the active ingredients.

Abstract: The invention provides a method for the combined production of (I) a sulfur oxide containing product and (II) a fertilizer selected from a group consisting of ammonium nitrate, ammonium phosphates and a combination thereof, through an indirect neutralization of ammonia with an acid selected from the group consisting of nitric acid, phosphoric acid and a combination thereof, the method comprising: a. contacting a precipitate containing calcium sulfite with a solution of nitric acid and a solution of ammonia in two separate steps, to form the fertilizer, the sulfur oxide containing product and a precipitate containing calcium hydroxide; and b. separating at least portion of the fertilizer, the sulfur oxide and the calcium hydroxide into three separated streams.

Abstract: A method for removing and recovering phosphorus from a spent adsorbent medium to result in a regenerated medium and a phosphorus-containing solution useful as a fertilizer.

Abstract: A solid free-flowing particulate fertilizer composition is provided, as well as a method of manufacturing same. The composition has low tendency to caking, is easy for storage and manipulation, dissolves rapidly and completely in water, and can be used directly as a fertilizer or serves in the preparation of concentrated aqueous fertilizer compositions comprising otherwise scarcely soluble nutrients.

Abstract: According to a method of producing a phosphate fertilizer, a first portion of the phosphate is produced in a pipe cross reactor, and a second portion of the phosphate is produced in a pre-neutralizer. Both the first and second portions of the phosphate are supplied to a granulator. Ammonia is added to the granulator to react with the first and second portions of the phosphate. To produce the first portion of the phosphate, a micronutrient is added to phosphoric acid to produce an enriched acid, and the enriched acid and ammonia are added to the pipe cross reactor where they are allowed to react to produce ammonium phosphate.

Abstract: A water-dispersible particle for delivery of fertilizer to a plant is disclosed. After delivery wetting of the particles causes particle dispersion so as to prevent secondary pick up to the particles. Methods for making and using the water-dispersible particle are described.

Abstract: The invention relates to a process for the manufacture of sulphur-containing fertilizers comprising the steps of: (a) mixing ammonia, phosphoric acid and water in a reactor unit to obtain an ammonium phosphate mixture; (b) introducing the mixture obtained in step (a) into a granulator unit to obtain granules, wherein a liquid phase comprising elemental sulphur is brought into contact with ammonia, phosphoric acid and water in the reactor unit in step (a) or is introduced in the granulator unit in step (b). The invention further relates to sulphur-containing ammonium phosphate fertilizers, to the use of these sulphur-containing fertilizers to promote the growth of agricultural products and to the agricultural products thus-obtained.

Abstract: The primary object of the invention is to provide a method of producing novel phosphate and potash (PK) containing compound fertilizers in the form of powders showing good handle-ability by which method the phosphate components contained in an incinerated ash residue of chicken droppings is improved in solubility and thus rendered effective or available and, at the same time, the free CaO-derived alkali is neutralized, as well as such novel phosphate and potash(PK) containing compound fertilizers.

Abstract: A method for making controlled-release ammonium phosphate fertilizer has the following acts of: cracking, pulverizing, blending, aging, drying, and adding release-controlling materials into an ammonium phosphate slurry during preparing processes or adding release-controlling materials in achieved ammonium phosphate powder. Selectively, sulfuric acid is added into the mixture of the release-controlling materials and the ammonium phosphate slurry or ammonium phosphate powder to acidify the mixture. In this method, the release-controlling material combines with the ammonium phosphate by chemical bonding to control the release of nitrogen and phosphorus nutrients to enhance the use efficiency and elongate fertilization effect of the controlled-release ammonium phosphate fertilizer.

Abstract: The invention is directed to a process for enhancing the plant nutrient value of relatively low analysis organic waste material (e.g. sewage sludge) involves treating the waste material with an acid and base in a pipe-cross reactor or tubular to form a melt; spraying the melt onto a recycling bed of fines in a granulator and flashing off the water contained in the melt as steam; rolling the melt onto recycled fine particles in a granulator to form granulated particles; and drying these granulated particles to form an enhanced plant nutrient value composition (e.g. a fertilizer or soil conditioner having a greater NPK value than the original relatively low analysis organic waste material). The process further includes drawing off the fumes from the granulator, passing them through a dryer with the granulated particles, and subsequently oxidizing the fumes to eliminate volatile organic compounds and/or gaseous hydrocarbon pollutants be converting such into carbon dioxide and water vapor.

Abstract: A corrosion inhibitor for use with Urea Ammonium Nitrate solutions is disclosed, comprising a blend of molybdate and one or more of the inorganic phosphates (including phosphates, polyphosphates, and pyrophosphates) and organic phosphates or phosphonates. Inorganic phosphates include, but are not limited to, SHMP (Sodium Hexametaphosphate) and TKPP (Tetra-Potassium Pyrophosphate). There are numerous other inorganic phosphates that will also serve as suitable secondary inhibitors. Organic phosphates or phosphonates include, but are not limited to, HEDP (1-Hydroxyethylidine-1,1-diphosphonic acid; also known as ethanol diphosphonate, acetodiphosphonic acid, or etidronic acid), ATMP or AMP (aminotri(methylenephosphonic acid)), PBTC (Phosphonobutane tricarboxylic acid), DETPMP (Diethylenetriaminepenta(methylene phosphonic acid)), and HPA (hydroxyphosphono acetic acid). There are numerous other organic phosphates and phosphonates that will also serve as suitable secondary inhibitors.

Abstract: Mechanically strong, water-disintegrable agglomerates made from a particulate calcium source, a water-soluble binder and optionally containing a primary plant nutrient source and/or micronutrient source and a process for forming such agglomerates are disclosed. The agglomerates may be used as a soil liming agent and for introducing nutrient values into cultivated soil. Also disclosed is a method for introducing nutrient values into cultivated soil so as to inhibit leaching of the nutrient values from the soil and improve utilization of the nutrient values by plants grown in the soil.

Abstract: The subject invention provides methods for producing homogenous organic base fertilizer for plant nutrition and soil fertility. Also provided by the subject invention are value added fertilizer products for plant nutrition and soil fertility and concentrated liquid formulations/nutrient supplements that provide the value added nutrients to fertilizer products. Methods according to the invention involve the application of concentrated liquid(s) and/or dry formulation(s) comprising a mixture of one or more plant nutrient(s), one or more additional organic compound(s), one or more penetrate(s), and one or more optional supplement(s) into one or more organic base material(s). These organic base materials include, and are not limited to, biosolids, activated sludge, municipal compost, animal manures (e.g., horse, cow, chicken, pig, and sheep), and composted organic byproducts.

Abstract: The use of dilute aqueous water-soluble fertilizer compositions are disclosed to enhance the rewetting of water, uniformity and nutrient retention characteristics of initially untreated plant culture media and soil.

Abstract: A high concentration, stable, neutral liquid fertilizer solution containing ammonium phosphite with a preferred composition of 9.8-34-0 for use as a fertilizer and a method for production and use of such a compound is disclosed.

Abstract: A method for manufacturing a solid product containing nitrogen and phosphor, particular a solid ammonium phosphate and/or urea ammonium phosphate product, in which method the solution containing urea and phosphoric acid is heated. Water then evaporates from the solution and the urea in the solution decomposes into ammonia and carbon dioxide. The carbon dioxide exits the reactor together with water vapor; the generated ammonia neutralizes the phosphoric acid. A suspension containing ammonium phosphate and/or urea ammonium phosphate is obtained, which is solidified, dried, crushed, ground and/or granulated. The end product as such can be used as a fertilizer or it can be used as part of a mixed fertilizer.

Abstract: Magnesium ammonium phosphate (struvite), suitable for use as a slow-release fertilizer for example, is produced by mixing animal manure with a pre-specified amount of a magnesium-rich compound. A pre-specified amount of an enzyme, such as an urease or uricase, is added to the resultant mixture. The temperature and pH of this mixture are maintained within a pre-specified range to facilitate precipitation of the magnesium ammonium phosphate. Optionally, the enzyme-supplemented mixture may be inoculated with a pre-specified amount of bacteria, such as Bacillus sphaericus, Bacillus globisporus, or Bacillus fusiformis, or a species of Bacillus identified as Bacillus sp. SB1. This bacteria-supplemented mixture is then allowed to incubate for about 14 days to form struvite.

Abstract: The present invention relates to a method for the preparation of a complex NPK fertilizer in the form of granules or prills, and to a method for its preparation and to the related use of the fertilizer thereby obtained. In particular the present invention relates to a fertilizer containing as fertilizing elements Nitrogen N, Phosphor P, Potassium K, meso elements like Calcium Ca, Magnesium Mg, Sulphur S, and micro elements like Iron Fe, Manganese Mn, Zinc Zn, Copper Cu, Boron B and Molybdenum Mo.

Abstract: A process for converting composted organic materials produced by optimized composting procedures into plant growing media for agronomic and other uses. The raw organic matter is first processed into compost by optimized standard methods. If desired, the raw organic matter can be of “organic” sources to provide plant growing media certifiable for use for organically grown food crops. The finished compost is screened to remove coarse particles above about 1 cm diameter, which are recycled back to the composting process. The composted material below approximately 1 cm diameter is further screened to separate out the particles below about 1 cm diameter and above 1 mm. This material is further separated into two size ranges: particles between 1 mm and up to 4 mm diameter (medium), and particles between 4 mm and 1 cm diameter (coarse).

Abstract: A high concentration, stable, neutral liquid fertilizer solution containing ammonium phosphite with a preferred composition of 9.8-34-0 for use as a fertilizer and a method for production and use of such a compound is disclosed.

Abstract: A method of forming a methylol urea prepolymer and a particle coated in with the prepolymer. The method involves providing a source of methylol urea and a source of aldehyde and reacting the urea and the aldehyde in the presence of an excess of urea to form the methylol urea prepolymer. The coated particle is preferably a controlled-release fertilizer particle. The particle is a substrate coated with a substantially uniform coating comprising a total nitrogen content ranging from about 39N to about 42N. The coating includes a low molecular weight methylene urea compounds.

Abstract: The use of inorganic or organic polyacids for the treatment of inorganic fertilizers, in particular the use of the polyacids as a mixture with at least one nitrification inhibitor for the treatment of inorganic fertilizers; the use of selected pyrazole derivatives as nitrification inhibitor in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations, as well as the corresponding treated inorganic fertilizers per se; and novel pyrazole derivatives which can be used as nitrification inhibitors in inorganic fertilizers and also as stabilizers of liquid manure or liquid fertilizer formulations are described.

Abstract: Shelf-stable soil enrichment solutions contain beneficial soil and plant microbial spores or colonies, e.g. Bacillus bacteria and/or Trichoderma fungal species, that remain at least about 90% viable for at least 12, preferably 18, months at room temperature. Preferred solutions are colloidal in nature and typically contain humic acid or other organic macromolecules, and exhibit a low salt index.

Abstract: Solid surfactant-impregnated, water-soluble fertilizer compositions are disclosed together with aqueous concentrates made therefrom. The use of dilute aqueous compositions made from said concentrates to enhance the rewetting of water uniformity and nutrient retention characteristics of initially untreated plant culture media is also disclosed. The fertilizer composition solids are friable and are composed of from 65 to 99 weight percent water-soluble fertilizer; and from 1 to 35 weight percent of a surfactant system comprising water-soluble nonionic surfactant and alkyl polyglycoside in a weight ratio of from less than 2:1 to 1:5. When these solid compositions are dissolved in water to form concentrates having from 20 to 50 weight percent fertilizer, the concentrates are both single phased and extremely stable.

Abstract: A method of forming a methylol prepolymer and a particle coated in with the prepolymer. The method involves providing a source of methylol urea and a source of aldehyde and reacting the urea and the aldehyde in the presence of an excess of urea to form the methylol urea prepolymer. The coated particle is preferably a controlled-release fertilizer particle. The particle is a substrate coated with a substantially uniform coating compromising a total nitrogen content ranging from about 39N to about 42N. The coating includes a low molecular weight methylene urea compounds.