Depth classification 9. Agriculture. 5. Species and cultivar

12-21<span style="font-size:12.0pt;line-height: 115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa"="" lang="EN-US">The essential difference between taxonomic classification in botany and the classification in agriculture is brought out. The number of agricultural species and cultivars is estimated in the idea plane. The advantage in the verbal plane of the nomenclature recommended by the International Horticultural Congress is indicated. Out of the 90 possible utility cum organ numbers of plants only 52 are shown to have agricultural plants. The number of cultivable agricultural species is estimated to be large. By a systematic analysis in the notational plane. Prescriptions are made for the economic construction of species numbers and of the economic cultivars. The advantage of Arabic notation for species number and alphabetical notation for cultivar numbers is brought out.