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The effect of total solar. radiation on nutrient concentration (mean values for 11 chrysanthemum cultivars) is. summarized in Figs 2â9. The increase of radiation (in MJ m-2) caused decreased. concentration of nitrogen, phosphorus, potassium, calcium, magnesium, cuprum and. boron in chrysanthemum leaves.
Any small volume in the atmosphere is affected not only by the local absorption of solar energy, but also by the absorption of radiation from all other surrounding regions, energy brought in by convection (air currents), and energy gained by conduction (at the surface, if the ground is hotter).