Analyzing plant nutrient uptake and utilization efficiencies: comparison between crops and approaches

• DOI: 10.1007/s11104-018-3738-y
• Publication Date: 2018-07-04T21:15:11Z
• Authors: M. Weih; K. Hamnér; F. Pourazari
• Keywords: 2. Zero hunger; 0401 agriculture, forestry, and fisheries; 04 agricultural and veterinary sciences; 15. Life on land

Various indices are applied to evaluate the nutrient (mostly nitrogen, N) use efficiency of plants, but those have rarely been compared across different crops, and co-limitation growth by nutrients other than N is usually not considered. To conceptually quantitatively compare a plant-level, plant-soil-level field-level (difference) method for assessment set annual perennial crops; some plant-level exploring in wheat. Data sets from previously published studies on wheat (grain), maize (feed), potato (starch), grassland ley (feed) Salix (bio-energy) field-grown Sweden were re-analyzed. This study first comparing various popular wide range also proposes methodology N. When methods, relating crop yields amounts plant-internal correlated, while N-uptake not. Only few (difference-method) correlated with two methods.