Inhibition of Growth in Tomato by Air Polluted with Nitrogen Oxides

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Abstract
Air polluted with parts 10−8concentrations of NO and NO2 significantly reduced the rate of growth of tomato seedlings. These two pollutants are known to occur in glasshouse atmos-Dhcres enriched with CO2 from propane or kerosene burners. The inhibition of growth would be sufficient to reduce, or even nullity, the benefits of CO2enrichments under conditions of low light intensity in winter.