Abstract: A foliar fertilizer specifically for iron deficient plants which contains a complex of various ingredients such as citric acid admixed/reacted with ferrous sulfate previously converted at-least predominantly to ferric sulfate by oxidation at about 90 degrees or more centigrade or a neutralizing amount of ammonium ion, to a pH ranging from about pH 6 to about pH 7, the ferrous sulfate being typically produced by reaction of iron metal with sulfuric acid, excluding the presence of any phosphate salt, neutralized with NH.sub.4 OH, then admixed with urea and/or ammonium nitrate, the total mixture critically having a nitrogen-to-iron ratio of not less than (i.e., at least) 3/1, preferably within a range of about 4/1 to about 5/1, in aqueous solution, and the method including using the above-noted fertilizer complex as a source, diluting with water such that the source as a percentage ranges from about 5% to about 40%, followed by foliar spraying onto plant foliage, up to an application of about 5 lbs.

Abstract: In a preferred embodiment, a high-yield method producing novel water soluble triazone compositions having a typical analysis as follows, percentages being based on the total weight of the reaction product: urea at about 17.5%; MMU at about 3.4%; MDU at about 1.0%; HMT at about 4%; water soluble triazone at about 48%; produced by a novel method in which ammonia/HCHO mole ratio is about 0.3, and in which percentage ammonia added and reacted during the initial reaction is about 4.5% by weight of total reactants, initial cooking is for about 45 minutes, followed by final cooking for about 10 minutes, both initial and final cooking are at about 90 degrees Centigrade, at a nitrogen content of about 28%, at an initial cooking-pH maintained immediately after ammonia addition, at about pH 9, and at a lower pH during the final cooking resulting from termination of adding further potassium hydroxide, the optimum mole ratio during the process, of reactants urea, formaldehyde and ammonia, for example, being about 0.9:1:0.

Abstract: In a preferred embodiment, a high-yield method producing novel water insoluble triazone compositions with a typical analysis, prior to separation of the insoluble triazone crystals, has components in amounts as follow, percentages being based on the total weight of the reaction product; unreacted urea at about 10%, total percentage of nitrogen from urea at about 4.7, with maximum total nitrogen at about 30 percent, with the yield of triazone at about 75 percent, produced by a novel method in which urea or substituted urea and pH adjusted to and maintained at about pH 9.0 by addition preferably of potassium hydroxide 45% aqueous solution, while mixing thoroughly and heating for about one hour at a temperature of about 85 degrees Centigrade, however keeping below the boiling point of the aldehyde, utilizing water or other solvent such as alcohol or other equivalent to maintain fluid conditions.

Abstract: In a preferred embodiment, a triazone mixture contains triazone present in an amount of at-least about 30% calculated on a dry weight basis of 100% solids, methylenediurea in an amount less than about 2%, monomethylolurea in an amount less than about 3%, and total methylenediurea and monomethylolurea taken-together being less than about 5%, and hexamethylenetetramine in an amount less than about 1%, in water solution, of which on a dry weight basis the ratio of traizone to methylenediurea is at-least about 6 and the ratio of triazone to urea is greater than about 1, of which typically about 80% of the triazone present is of the emperical formula C.sub.3 H.sub.7 N.sub.3 O in cyclic form, and a majority of remaining triazone present is of the emperical formula C.sub.5 H.sub.10 N.sub.4 O.sub.

Abstract: In a preferred embodiment, a triazone mixture contains triazone present in an amount of at-least about 30% calculated on a dry weight basis of 100% solids, methylene diurea in an amount less than about 2%, monomethylolurea in an amount less than about 3%, and total methylene diurea and monomethylolurea taken-together being less than about 3%, and hexamethylenetetramine in an amount less than about 0.5%, in water solution, of which on a dry weight basis the ratio of triazone to methylene diurea is at-least about 13 and the ratio of triazone to urea is greater than about 0.5, of which typically about 80% of the triazone present is of the emperical formula C.sub.3 M.sub.7 N.sub.3 O in cyclic form, and a majority of remaining triazone present is of the emperical formula C.sub.5 M.sub.10 N.sub.4 O.sub.

Abstract: Storage-stable fertilizer compositions exhibiting exceptionally low salt-out temperatures comprising aqueous solutions of magnesium nitrate, ammonium nitrate and urea, present in particular proportions, are provided.