Nitrogen Form Affects Growth, Mineral Nutrient Content, and Root Anatomy of Cotoneaster and Rudbeckia

摘要: Additional index words. root growth, Cotoneaster dammeri 'Skogholm', Rudbeckia fulgida 'Goldsturm', ammonium, nitrate, container-grown Abstract. Five ratios of NH4 + : NO3 - (100:0, 75:25, 50:50, 25:75, and 0:100) were evaluated for impact on growth Schneid. 'Skogholm' (cotoneaster), a woody ornamental shrub, Ait. 'Goldsturm' (rudbeckia), an herbaceous perennial. Nitrate alone decreased dry weight leaf area cotoneaster rudbeckia compared with mixtures alone. Additionally, suppressed accumulation cationic nutrients N in cotoneaster, while mixes enhanced roots shoots solutions containing either or The steles contained more secondary xylem larger tracheary elements mix 25 75 than