TECHNOLOGY FOCUS - AGRICULTURE - Preferred Components: The only active ingredient is Clomazone. The oil phase contains a customary agricultural solvent of the type substituted N-alkyl lactam or N,N-dimethylalkylamide.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: (b) has a structure of formula (II), preferably diphenylmethane-4-4~-diisocyanate, optionally, with blends of their position or stereochemical isomers. The aliphatic isocyanate is m-tetramethylxylene diisocyanate. (a) is made of a mixture of different aliphatic isocyanates. (b) is made of a mixture of different aromatic isocyanates. (I) of have a content in hydroxyalkyl groups of up to 50%. (I) are used, in monomeric and/or dimeric and/or trimeric form, and not as a mixture of different compounds comprised in (I). (I) have a hydroxymethyl content of up to 40%. The fatty acid of the surfactant is stearic acid. (I) are solid at 20 degrees C.n = 0-6.Preferred Process: The process comprises an additionally step (F) of increasing the temperature up to 70-90 degrees C. The process comprises an additionally step (G) of adding at least one compound comprising co-formulants for the purposes of pH final adjustment of 3-12, viscosity modifiers, wetting agents, antifreezing agents, antimicrobials, protectors against light, and any other co-formulant for the purposes of the microencapsulated formulation to the resultant solution produced. In the process of microencapsulation, once the microcapsules are formed and the wall forming materials are substantially consumed, a water solution containing at least one of compounds comprising viscosity modifiers, clays or similar mesoporous materials, hydrocolloids, antimicrobial agents, UV protectants, wetting agents, and additional surfactants is added to obtain a functionally usable agricultural formulation.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: (I) are in the form of oligomers, where the number of moles of (I) is 2-10. The ratio of wall forming materials is aliphatic isocyanate:aromatic isocyanate of 1:3-1:1, aromatic isocyanate:(I) of 9:1-4:1, and aliphatic isocyanates:(I) of 2:1-5:1. The ratios and quality of isocyanates are monomeric aliphatic isocyanate:prepolymeric aromatic isocyanate:(I) of 3:6:1. The aromatic isocyanate is a monomeric aromatic isocyanate or a prepolymeric aromatic isocyanate. The aliphatic isocyanate is a monomeric aliphatic isocyanate or a prepolymeric aliphatic isocyanate. The polymer that constitutes the wall of the microcapsule is formed by the reaction of the components (a)-(c) as above per se, where (c) are a mixture of different (I) with different substituents in (I). (c) are a mixture of (I) in the form of oligomers up to 10 moles per molecule, where the sum of the quantity of monomers, dimers, trimers and tetramers is at least 75 wt.% of the total content of (I). (c) are a single compound represented by (I), having the variable substituents of (I) a determined value. (c) are a mixture of (I) and such mixture is composed of (I) in monomeric form and/or oligomerized form of 2-10 monomers per molecule. The aliphatic isocyanate is a monomeric aliphatic isocyanate. The oil-soluble surfactant and single emulsifier are a (meth)acrylic graft copolymer. The oil-soluble surfactant and single emulsifier are surfactants comprising ethoxylated alcohols, ethoxy and/or propoxy block copolymer, polyvinyl alcohol, polyvinyl pyrrolidone or any derivatives or graft copolymers of the surfactants. The surfactant(s) added to the water phase is a polyethylglycol ester of a polyhydroxy fatty acid with a molecular weight of 10000-25000 Daltons. The oil-soluble surfactant and single emulsifier is a polyvinyl fatty acid ester or a polyalkyl(meth)acrylate with a molecular weight of 100000-200000 Daltons. The water phase contains a complex consisting in a mixture of a lignosulfonate at 15-25 wt.%, a polyvinyl alcohol at 5-15 wt.% and water up to 100 wt.%, where the compounds is chosen in such a way that the lignosulfonates and the polyvinyl alcohol are dissolved in full in water, and the solution is heated up to 60-90 degrees C for 5-20 minutes before used in the process. The oil phase contains a block copolymer with a hydrophilic-lipophilic balance of 3-7, in a concentration of 5-25% of the wall forming materials. The oil phase contains a block copolymer of polyethylene and/or polypropylene glycol, with a hydroxylated fatty acid. The oil phase contains an antioxidant or mixture of antioxidants. ACTIVITY - None given.    MECHANISM OF ACTION - None given.    SPECIFIC COMPOUNDS - The use of N,N',N'',N'''-tetrabutoxymethyl acetylene carbamide, N,N',N'',N'''-tetramethoxymethyl acetylene carbamide (Ia), N,N',N'',N'''-tetramethoxyethyl acetylene carbamide, N,N',N'',N'''-tetraethoxyethyl acetylene carbamide, and N,N',N'',N'''-tetrapropoxymethyl acetylene carbamide is specifically claimed as (I).