RT Journal Article SR Electronic T1 How Tree Appraisal Relates to the Insurance Industry and The Legal Profession JF Arboriculture & Urban Forestry (AUF) JO JOA FD International Society of Arboriculture SP 87 OP 88 DO 10.48044/jauf.1978.020 VO 4 IS 4 A1 Micha, Frederick R. YR 1978 UL http://auf.isa-arbor.com/content/4/4/87.abstract AB Baumgardt, J.P. 1977. Suitable soils: texture and fertility. Grounds Maintenance 12(6): 32-33, 36-39.Soil texture and soil fertility are distinctly different aspects of soil science. Yet, in practice they often are confused. There’s a difference between substances that alter soil texture and substances that primarily supply nutrients to plants and it pays to know when to use each. Both are necessary to good horticulture. The texture of soil depends on the organic and inorganic ingredients present and their relative proportions. Inorganic components of soil are sands, silts, and clays. Interspersed between these purely mineral substances are particles of organic matter. Soil texture can be modified by changing the percentages of inorganic constituents. When we speak of the fertility of soil we refer to the presence of chemicals needed by plants for vigorous growth. What we supply are minerals required to make plant protoplasm and minerals that make the energy-fixing cycles in the plant operative.