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The effect of phosphorus and nitrogen deficiency on growth of seedlings of spring barley in dependence on irradiance: Growth analysis

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Biologia Plantarum

Abstract

Seedlings of spring barley,Hordeum vulgare L. cv. Mirena, were grown in a controlled environment chamber at high (HI: 122 Wm−2) and low (LI: 28 Wm−2) irradiance in the complete Richter’s nutrient solution (R) or in solution lacking either phosphorus (R -P) or nitrogen (R -N). The experiment was terminated 15 days after sowing when plants (R-N) at HI ceased to grow. At that time the dry mass of one plant was 449.8 mg, 145.7 mg and 116.8mg at HI and 203.4 mg, 110.1 mg and 91.0 at LI for R, (R-P) and (R-N), respectively. Deficiency of P and especially N reduced the size of loaf area more under HI than under LI conditions. Specific dry mass of leaves was the highest in R-N plants. The values of relative growth rate and assimilation rate are presented. Interaction of the effects of deficiency of mineral nutrients and irradiance during cultivation should be analyzed in further experiments for determination of optimum conditions for utilization of mineral nutrients.

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Náte, L., Apel, P. The effect of phosphorus and nitrogen deficiency on growth of seedlings of spring barley in dependence on irradiance: Growth analysis. Biol Plant 25, 425–432 (1983). https://doi.org/10.1007/BF02903140

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  • DOI: https://doi.org/10.1007/BF02903140

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