Hermann Ansorge (chemist)

Hermann Ansorge (born December 27, 1927 in Adersleben near Halberstadt , † December 16, 2010 in Görlitz ) was a German agricultural chemist in the field of fertilization.

Life path

Hermann Ansorge, son of an accountant, returned home from the war in 1945 seriously wounded. After recovering, he began an agricultural apprenticeship and passed his school leaving examination in 1946. After the assistant examination, he began studying agriculture at the Martin Luther University in Halle-Wittenberg in 1948 and graduated in 1951 with a degree in agriculture . Following his original wish to study chemistry one day, he then turned to agricultural chemistry . At the Institute for Plant Nutrition and Soil Science at Halle University, he received his doctorate in 1955 under Karl Schmalfuß with the thesis "Investigations into the applicability of some organic nitrogen compounds as slow-acting nitrogen fertilizers". He then succeeded Werner Selke as head of the agricultural chemistry department in Bad Lauchstädt at the Institute for Agricultural Experiments and Investigations. As a result of the work there, his habilitation thesis on the topic of "Investigations into some problems of organic fertilization" was created.

In 1965 he moved to Leipzig-Möckern to the then Institute for Chemistry in Agriculture, later Institute for Fertilization Research, where in 1966 he was appointed scientific director of the “Fertilization Systems” department. He worked there for 26 years until he retired in 1991. After that Hermann Ansorge lived in Görlitz .

Scientific achievements

In all three stations of his professional life, Hermann Ansorge dealt with trend-setting and still current topics. His investigations in Halle / S. on the effect of urea compounds as slow-acting N-fertilizers were among the first in this field in Germany. In Bad Lauchstädt, in addition to working on chemical crop protection, he mainly and very comprehensively dealt with the various forms of fertilization , including a. manure and straw fertilization. With the "Static Fertilization Trial" set up in 1902, he also had an excellent working basis for this. He was also able to fall back on tests at six other test stations with very different site conditions as well as vessel tests. During this time, he worked on almost all current questions about fertilization, which he also published very intensively.

In Leipzig, the focus of his work was the development of an "economic-mathematical electronic computer model for optimized fertilization recommendations". This development was under his direction and all relevant institutions in the GDR were involved. So first the "Fertilization System 69" (DS 69) and then the improved systems up to the computer-aided DS 87 were created. The "Fertilization System DS 87" with its 13 sub-programs is unique worldwide. The development of the operational instruments for N fertilizer measurement, such as the “Nan process”, was coordinated by Hermann Ansorge. So was z. B. the final editing of the "Current Council on Fertilization", which appears regularly in the press.

A basis for his success was his extraordinary professional competence, which was based on a wide range of experience and a sure judgment. His very close relationships with numerous practice companies were also important here. Through the leadership of working groups, the guidance and support of numerous young scientists, as the author and co-author of around 400 scientific and popular scientific publications and through his participation in scientific committees, Hermann Ansorge was one of the leading scientists in the field of fertilization research in the GDR at the end of the 20th century become. An appointment as professor was denied to him due to his non-partisanship.

Publications (selection)

• Studies on the applicability of some organic nitrogen compounds as slow-acting nitrogen fertilizers. In: Kühn-Arch. Volume 69, 1955, pp. 283-329.
• Investigations into the influence of different fertilization on the soils of the "static experiment" Lauchstädt. In: Z. f. agr. Experimental and investigative systems. Volume 3, 1957, pp. 499-532.
• Relationships between previous crop value and fertilization. In: Z. f. agr. Experimental and investigative systems. Volume 6, 1960, pp. 295-321.
• Continuous nitrogen fertilization of grain. In: Z. f. agr. Experimental and investigative systems. Volume 7, 1961, pp. 41-51.
• Investigations into the timing of fertilization with phosphoric acid and potash. In: Z. f. agr. Experimental and investigative systems. Volume 8, 1962, pp. 234-240.
• Studies on the distribution and nitrification of ammonia in the soil when fertilized with anhydrous ammonia. In: Albrecht-Thaer-Arch. Volume 6, 1962, pp. 327-338.
• About the influence of NPK fertilization on the yield and quality of silage maize. In: Albrecht-Thaer-Arch. Volume 7, 1963, pp. 215-230.
• Results of straw fertilization trials. In: Z. f. agr. Experimental and investigative systems. Volume 10, 1964, pp. 21-29.
• Results of molybdenum fertilization experiments on cauliflower and alfalfa. In: Albrecht-Thaer-Arch. Volume 8, 1964, pp. 235-248.
• Control of couch grass with chemical means. In: Albrecht-Thaer-Arch. Volume 9, 1965, pp. 101-112.
• with G. Kühn: Keeping cattle without straw on rubber mats. In: The Dt. Agriculture. Volume 16, 1965, pp. 39-62.
• Investigations into phosphoric acid uptake from kola apatite and "hyperphos" by lupins and oats. In: Albrecht-Thaer-Arch. Volume 10, 1966, pp. 153-166.
• with K.-H. Klemm: Investigations into the influence of different fertilization over many years on the quality of the harvested products. In: Albrecht-Thaer-Arch. Volume 10, 1966, pp. 747-756.
• Investigations into the interaction between manure and nitrogen fertilization. In: Albrecht-Thaer-Arch. Volume 11, 1967, pp. 299-308.
• with S. Markert and R. Jauert: Investigations into the inhibition of nitrification by some chemical preparations. In: Albrecht-Thaer-Arch. Volume 11, 1967, pp. 509-516.
• with H. Görlitz: Optimal need for nutrients. In: Agrochemija. Volume VIII, No. 3, 1968, pp. 69-72.
• with R. Jauert and H. Görlitz: Influence of N-Serve on nitrification, plant growth and P uptake. In: Albrecht-Thaer-Arch. Volume 12, 1968, pp. 487-497.
• with H. Görlitz, G. Specht and P. Kundler: Basics of site-specific methods of mineral fertilizer application based on field test results. In: Albrecht-Thaer-Arch. Volume 12, 1968, pp. 525-535.
• with P. Kundler, H. Görlitz, R. Jauert, H. Krüsmann, G. Specht and B. Wierich: Optimized fertilization recommendations through electronic data processing. VEB Chemiehandel Berlin 1970.
• with P. Kundler, W. Matzel, H. Görlitz, G. Specht, M. Koriath, G. Rinno, L. Hannusch, G. Turnheim, K. Ebert, R. Jauert, S. Markert, D. Büchner, W Heymann and W. Gärtig: Mineral fertilization . VEB Dt. Landwirtschaftsverlag Berlin, 1970.
• with W. Matzel: The neutralizing effect of different limestones with different grind fineness. In: Albrecht-Thaer-Arch. Volume 15, 1971, pp. 39-51.
• with R. Jauert: Use of industrial by-products as copper and manganese fertilizers. In: Arch. Acker- u. Crop production and Soilenkd. Volume 15, 1971, pp. 851-856.
• with I. Hundt, P. Neubert, Vielemeyer, Görlitz, H., Hagemann, O. and R. Jauert: Relationships between the N content in cereal plants during vegetation and the yield as the basis for establishing N limit value ranges. In: Arch. Acker- u. Crop production and Soilenkd. Volume 16, 1972, pp. 819-826.
• with S. Müller, O. Hagemann and R. Jauert: The influence of different P fertilizers on the yield, the P uptake of plants and the implementation of P fertilizers in different soils. In: Arch. Acker- u. Crop production and Soilenkd. Volume 18, 1974, pp. 721-735.
• with R. Jauert, Kretschmar and H. Görlitz: Examination of the fertilising effect of urea and calcium ammonium nitrate on the soil, form of application and weather. In: Arch. Acker- u. Crop production and Soilenkd. Volume 20, 1976, pp. 645-652.
• with S. Müller, J. Garz and H. Stumpe: Investigations into the content of inorganic nitrogen in the soil and its dependence on winter weather and soil type. In: Arch. Acker- u. Crop production and Soilenkd. Volume 20, 1976, pp. 705-712.
• with S. Müller, R. Jauert and A. Hanschmann: Influence of different preceding crops on the nitrogen supply of the soil and on the yields of the subsequent crops. In: Arch. Acker- u. Crop production and Soilenkd. Volume 21, 1977, pp. 45-52.
• with S. Müller and O. Hagemann: Studies on the use of active ingredients to improve the degree of utilization of phosphorus. In: Arch. Acker- u. Crop production and Soilenkd. Volume 21, 1977, pp. 789-798.
• with O. Hagemann, B. Witter, H. Görlitz and D. Richter: EDP ​​fertilization recommendations as an important basis for making decisions about fertilization. agra book 1978
• Improvement of the use of fertilizer in industrial plant production through the further development of fertilization projects and supplementary operational advice. In: Tag.-Ber. AdL. Volume 166, 1978, pp. 273-298.
• with H. Michael and R. Jauert: Investigations on the effect of the level of N fertilization with different sowing times and varieties on the grain yield and crude protein content in winter wheat at different locations. In: Tag.-Ber. AdL. Volume 167, 1978, pp. 251-258.
• with R. Heber, S. Müller and W. Matzel: Ammonia losses during urea fertilization. 4. Communication: The influence of the urease inhibitor phosphoric acid phenylesterdiamide on the level of NH3 losses and the fertilizing effect of urea in model and container tests. In: Arch. Acker- u. Crop production and Soilenkd. Volume 23, 1979, pp. 231-240.
• with E. Albert and R. Jauert: Effect of long-term use of concentrated complex fertilizers and high-fiber straight-line fertilizers on micronutrient depletion and micronutrient content of the soil. In: Arch. Acker- u. Crop production and Soilenkd. Volume 24, 1980, pp. 295-302.
• with F. Herbst and S. Müller: Investigations in the container test to determine criteria for the measurement of the N fertilization of cereals 1st part: Dry matter formation, N content and N uptake. In: Arch. Acker- u. Crop production and Soilenkd. Volume 27, 1983, pp. 467-476.
• with I. Reiche, H. Görlitz, O. Krause, P. Döring and W. Weidauer: Content and application of the new company fund-related EDP fertilization recommendations for nitrogen. In: Field Management. Volume 26, 1985, pp. 437-439.
• with G. Schilling, W. Borchmann, G. Markgraf and H. Peschke: Plant nutrition and fertilization, part 2 fertilization. VEB German Agricultural Publishing House. Berlin 1987.
• with collective of authors: User manual fertilization system DS 87. agra book 1988.

literature

• R. Jauert: Dr. sc. Hermann Ansorge on his 60th birthday. In: Archive Acker- u. Crop production and Soilenkd. Volume 32, 1988, pp. 139-140.
• J. Garz, M. Körschens, E. Albert: A professional life in the service of fertilization research - Dr. agr. habil. Hermann Ansorge on his 70th birthday. In: Archives of Agronomy and Soil Science. Volume 43, 1998, pp. 247-250.
• Gerber, Th.,: Personalities from agriculture, forestry, horticulture and veterinary medicine. In: Biograph. Dictionary. Vol. 1, 2004, p. 20, NORA Verlag Berlin