Soil Fertility Control for Carnations
A soil is not 'fertile nor will it remain fertile long without a -good structure. Soils are made up of particles of minerals and organic matter. These particles hang together to form aggregates or "crumbs." Between and around the aggregates are pores through which air and water pass. A soil that has good physical tilth will be well aggregated and porous. It will feel spongy and loose to the touch. How good the structure is will be answered by how long the soil will remain porous under greenhouse watering and cropping practices.
Source: • Colorado State Flower Growers Association Bulletin #8
Keywords: Soil fertility