M.L. Van Beusichem – författare

The Eighth International Colloquium for the Optimization of Plant Nutrition was held in Lisbon, Portugal, 1992, and was attended by 280 scientists from 34 countries. The programme allowed the participants ample opportunity for discussions, and exchange of results and ideas. The present volume includes 103 refereed contributions that clearly reflect the main themes of the Colloquium. The published papers are related to the following problem areas: plant analytical procedures and associated concepts; diagnosis of nutrient status of plants in relation to fertilizer application; physiological and biochemical effects of stress (nutrient deficiencies/toxicities, salinity/alkalinity); assessment of nutrient requirements by crops and improvement of nutrient use efficiency based on dynamic models; optimization of crop nutrition in integrated agriculture in terms of maximum productivity and profitability, technical feasibility, and reduction of environmental pollution. Since 1964, International Colloquia have been organized every four years under the aegis of what is now known as the International Association for the Optimization of Plant Nutrition (IAOPN).The aim of these meetings has been to assess the continuing and increasing role of plant nutrition in developments in horticulture, agriculture, and forestry. Major progress has been made in use of artificial growth media, diagnosis of plant nutrient requirements and disorders of crops, the ongoing quest to improve both yield and quality of crops through efficient use of fertilizers, and the introduction of methods and materials in crop nutrition that spare the environment.

The Eighth International Colloquium for the Optimization of Plant Nutrition was held in Lisbon, Portugal, 1992, and was attended by 280 scientists from 34 countries. The meeting was of high scientific standard; the programme allowed the participants ample opportunity for discussions, and exchange of results and ideas. The present volume includes 103 refereed contributions that clearly reflect the main themes of the Colloquium. The published papers are related to the following problem areas: plant analytical procedures and associated concepts; diagnosis of nutrient status of plants in relation to fertilizer application; physiological and biochemical effects of stress (nutrient deficiencies/toxicities, salinity/alkalinity, etc.); assessment of nutrient requirements by crops and improvement of nutrient use efficiency based on dynamic models; optimization of crop nutrition in integrated agriculture in terms of maximum productivity and profitability, technical feasibility, and reduction of environmental pollution.Since 1964, International Colloquia have been organized every four years under the aegis of what is now known as the International Association for the Optimization of Plant Nutrition (IAOPN). The aim of these meetings has been to assess the continuing and increasing role of plant nutrition in developments in horticulture, agriculture, and forestry. Major progress has been made in use of artificial growth media, diagnosis of plant nutrient requirements and disorders of crops, the ongoing quest to improve both yield and quality of crops through efficient use of fertilizers, and the introduction of methods and materials in crop nutrition that spare the environment.

Exactly 35 years after the first Colloquium was held, the Eleventh International Plant Nutrition Colloquium took place from 30 July to 4 August 1989 in Wageningen, The Netherlands. Although impressive progress has been made during the past decades in our understanding of the mechanisms of uptake, distribution and assimilation of nutrients in relation to crop yield and quality, there are still significant gaps in our insight into many fundamental aspects of plant mineral nutrition and related metabolic processes. In spite of improved knowledge of nutrient requirements of crops and improved fertilizer application strategies, the world population remains to be burdened with an enormous shortage of plant products for food, timber, fuel, shelter, and other purposes. The main challenge facing the plant nutrition research community is to at least alleviate the increasing world-wide need for applying scientific knowledge to practical problems in agriculture, horticulture, and forestry. It is therefore felt by many scientists that the Plant Nutrition Colloquia, which are intended to bring together scientists and to integrate knowledge and approaches acquired in plant physiology, biochemis­ try, soil science, agronomy and related disciplines, have indeed made a significant contribution to the advancement of our knowledge and understanding in this vital and interdisciplinary field of agrobiology. About 260 scientists from 40 nations attended the Colloquium in Wageningen.

Exactly 35 years after the first Colloquium was held, the Eleventh International Plant Nutrition Colloquium took place from 30 July to 4 August 1989 in Wageningen, The Netherlands. Although impressive progress has been made during the past decades in our understanding of the mechanisms of uptake, distribution and assimilation of nutrients in relation to crop yield and quality, there are still significant gaps in our insight into many fundamental aspects of plant mineral nutrition and related metabolic processes. In spite of improved knowledge of nutrient requirements of crops and improved fertilizer application strategies, the world population remains to be burdened with an enormous shortage of plant products for food, timber, fuel, shelter, and other purposes. The main challenge facing the plant nutrition research community is to at least alleviate the increasing world-wide need for applying scientific knowledge to practical problems in agriculture, horticulture, and forestry. It is therefore felt by many scientists that the Plant Nutrition Colloquia, which are intended to bring together scientists and to integrate knowledge and approaches acquired in plant physiology, biochemis­ try, soil science, agronomy and related disciplines, have indeed made a significant contribution to the advancement of our knowledge and understanding in this vital and interdisciplinary field of agrobiology. About 260 scientists from 40 nations attended the Colloquium in Wageningen.