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Physiological and Chemical Ageing of Cedar Bark Substrate and Their Effects on Tomato Yield in a Closed Hydroponics System
CEC(cation exchange capacity) nutrient concentration organic substrate three phase distribution
2009/7/8
Tomatoes were grown on substrates made of cedar bark to investigate the effects of decomposition changes in physiological and chemical properties of substrates, the concentrations of the components in...
Age of population and the development of population ageing in the regions of the Czech Republic
regions of the czech republicpagepprocess of ageing of population factor analysis
2014/3/3
The process of ageing of the population is one of the negative demographic phenomena of the developed countries’ population. The basic reasons are thedecrease of the birth-rate and a longer lifespan o...