1. A method of enhancing plant growth, which includes at least the step of coating the seeds of said plant with a coating of a composition comprising at least a cationic guar. A method according to claim 1, comprising at least the following step: a) coating a plant seed with a coating of a composition comprising at least a cationic guar； and b) applying seeds to the soil or applying to the soil. 3. The method of claim 1, comprising at least the following step: a) the untreated or non-coated seeds are introduced into a depression in the soil； and b) a coating composition comprising at least a cationic guar is introduced into a recess to surround or partially surround the seeds. The method according to any one of paragraphs. 1-3, in which the seeds are selected from the group comprising seeds: corn, wheat, sorghum, soy, tomato, cauliflower, radish, cabbage, canola, lettuce, ryegrass, herb, rice, cotton and sunflower. 5. The method of claim 1, wherein the cationic guar is prepared using a cationic esterifying reagent. The method of claim 1, wherein the cationic guars are prepared using quaternary ammonium salts as the cationic esterifying reagent. The method of claim 6, wherein the quaternary ammonium salts are selected from the group consisting of 3-chloro-2-hydroxypropyltrimethylammonium chloride, 2,3-epoxypropyltrimethylammonium chloride and diallyldimethylammonium chloride. The method of claim 1, wherein the cationic guars are selected from the group consisting of: cationic hydroxyalkyl guars, such as cationic hydroxyethyl guar (NOT guar), cationic hydroxypropyl guar (HP guar), cationic hydroxybutyl guar (HB guar), and cationic carboxyalkyl guars, including cationic carboxymethyl guar (SM guar), cationic1. Способ усиления роста растения, который включает по меньшей мере стадию нанесения на семена указанного растения покрытия из композиции, содержащей по меньшей мере катионный гуар.2. Способ по п. 1, включающий по меньшей мере следующую стадию:a) нанесение на семена
