Volume I, The Soil and its Improvement - The Soil and its Improvement | Soltner

. Description and properties (160 pages): The great variety of their origins, compositions, structures, physical, chemical and biological properties.. Fertility and means of improving it (287 pages) - Assessing fertility through cultural profile examination and analysis. Moisture control, and ways to combat its excesses (too much or too little water) - Lime and humus amendments, why and how? - Soil tillage, necessary or unnecessary? - Plant nutrition: its theories and applications through organic and mineral fertilizers - Fertilization in organic and conservation farming...472 pages, one illustrated page per text page - 26th edition 2014 (1st edition 1972)