The Dilution Effect in Plant Nutrition Studies
1981; Elsevier BV; Linguagem: Inglês
10.1016/s0065-2113(08)60887-1
ISSN2213-6789
Autores Tópico(s)Plant Physiology and Cultivation Studies
ResumoThis chapter discusses the dilution effect in plant nutrition studies. “Environmental conditions” include changes in the soil environment because of the addition of inorganic and organic materials, and water to soil, as well as temperature and light, the application of living organisms such as rhizobia and mycorrhizal fungi, and the inclusion of toxic materials such as heavy metals. A summary is presented of the physical, chemical, and biological reasons that accounts for the observed changes in the rate of nutrient uptake, and the rate of dry matter accumulation as functions of time. The chapter proposes that data on total uptake and total dry matter yield be considered wherever possible, and that consideration of these factors be coupled with consideration of concentrations. In instances where total nutrient uptake is difficult to calculate, it is suggested that this be estimated by the product of concentration and yield. The effect of a chemical or environmental treatment on the concentration of a nutrient in the plant will be considered in two categories—noninteractive and interactive. Of these two, the interactive effects have been most carefully studied in soil-plant nutrition work.
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