Nitrogen use efficiency of maize and spring barley under potassium fertilization in long-term field experiment

A. Rutkowska, D. Pikuła and W. Stępień
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A. Rutkowska: Department of Plant Nutrition and Fertilization, Institute of Soil Science and Plant Cultivation, State Research Institute in Puławy, Puławy, Poland
D. Pikuła: Department of Plant Nutrition and Fertilization, Institute of Soil Science and Plant Cultivation, State Research Institute in Puławy, Puławy, Poland
W. Stępień: Department of Soil Environment Sciences, Faculty of Agriculture and Biology, Warsaw University of Life Science, Warsaw, Poland

Plant, Soil and Environment, 2014, vol. 60, issue 12, 550-554

Abstract: In the paper, the results of the long-term field experiment on soil depletion from potassium on yields and selected indices of nitrogen use efficiency of maize and spring barley were presented. The factors of the experiment were potassium fertilization (K plus and K minus treatment) and increasing nitrogen rates. Maize responded for soil exhausting from K in yield reduction over all the range of nitrogen rates applied in the experiment, and spring barley only through the highest rates. The greater values of nitrogen use efficiency indices were proven for barley as compared with maize. Potassium fertilization slightly increased agronomic efficiency and physiological efficiency of barley.

Keywords: Zea mays L.; Hordeum vulgare L.; potassium and nitrogen interaction; NUE indices (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:60:y:2014:i:12:id:434-2014-pse

DOI: 10.17221/434/2014-PSE

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