produce a desired effect on a desirable or an undesirable organism particles are administered by a method which delivers the nitrogen containing ingredient to the vicinity of a desirable organism whose health is to be encouraged further the particles are administered by a method which delivers the active ingredient to an area where it will be available to a targeted desirable or undesirable organism for example where a particle contains a controlled release nitrogen source such as methylene urea oligomers and an active ingredient such as a plant hormone the particles are delivered to a desirable plant target such as a golf course lawn by broadcast scattering via rotary spreader the particles are then dispersed by water which is user applied or natural such as rain dew or atmospheric humidity alternatively the particles are placed in a limited target area such as near a particular desired plant in a garden or in a crop row in another embodiment the particles are placed under the soil surface a target desirable organism illustratively includes cultivated plants such as lawn grass crops flowers shrubs trees and bushes target undesirable organisms illustratively include pest insects at any stage of development bacteria molds algaes weeds worms and rodents dispersible methylene urea using a pan agglomeration disk a binder such as calcium lignosulfanate corn starch and corn syrup is applied to a mixture of methylene urea fines material less than 250 microns the agglomeration disk is operated and adjusted to generate the desired size.