Abstract: Method for the uniform, fully enclosing surface coating of individual particles of pourable materials having nearly uniform particle size with either a smooth, rough or scabrous serrated surface, in a fluidizing fountain with heat air under use of an inorganic and or organic coating material in the form of a suspension or solution. A predetermined quantity of the material is to be coated within a steep funnel-like upwards enlarged container, having a shorter less steep funnel-like lower segment located at the bottom of the upwardly enlarged container through injection of a heat air stream at controlled velocity in ascending vertical direction, forming a fluidized fountain of limited height and diameter incident to the middle axis, thereby forming a core zone; with injection from below and in the same direction as the heat air through one or several injection nozzles, located at the lower end of the container of the suspension or solution facing in an upward direction.

Abstract: Apparatus for the uniform and complete surface coating of individual kernels of pourable materials including a container of either a circular or polygonal configuration whose upper portion constitutes a body of increasing diameter having thereto attached at the bottom part a funnel-like body with an opening towards the top portion. The apparatus is equipped at the upper and lower end with a screen whose change in diameter from the lower screen closure to the top of the lower funnel forms an angle of 20.degree. to 50.degree. perpendicular to the axis and wherein the diameter ratio of the upper part, measured from the low end to the top screen closure may be in a ratio of 1:1.5 to 1:4.5, and whose upper and lower screen closure consists of exchangeable screens of maximum free area with a mesh size smaller than the smallest particle of the material to be coated.

Abstract: A process for the gas and liquid-permeable encrusting, pilling and granulating of seed material with the utilization of a three-layer mineral as a laminar coating material which is expandable under the effect of a liquid; the three-layer mineral being constituted of vermiculite or hydrous mica to form the basic material and providing a fine-grained reversibly expandable coating material when applied onto the seed, and which rapidly absorbs and gives off polar liquids such as water. The basic material consists of particles in the form of extremely thin, uniformly even platelets which comprise over 50% of the basic material.

Abstract: Pilled, granulated, encrusted seed material is provided by a process in which the seeds to be processed are divided into two or more fractions according to size, configuration, specific gravity, and the like. Each seed fraction is thereafter separately coated for optimum physiological properties and the fractions are admixed and dried.

Abstract: A method of preparing a laminar seed carrier in which a support comprising an unsized or lightly sized paper web of tangled short, smooth individual fibres is provided with one or more patches of an adhesive substance, seeds are applied to the patch or patches of adhesive substance, an upper paper web comprising a porous web having a lower weight than the support paper web is placed over the seeds and bonded to the support paper web and is treated with one or more powdered water-storing substances to incorporate the powdered water-storing substances within the pores of the upper paper web.