Lupin takes up less potassium but uses the potassium more effectively toproduce shoots than canola and wheat

摘要: We compared the potassium (K) response of canola (Brassica napus L. cv. Karoo), spring wheat (Triticum aestivum Camm), narrow-leaf lupin (8 cultivars Lupinus angustifolius L.), and yellow (2 luteus L.) in a glasshouse experiment. The following measures were used: yield without added K; K required for 75% maximum yield; to achieve concentration shoots 20 g/kg; content 50 mg K/pot dried (K multiplied by yield); and, cultivars, efficiency ratio (yield nil-K treatment divided largest amount applied). Both used soil applied more effectively than produce (measured from 42-day old seedlings). For all amounts applied, including nil treatment, concentrations higher 2 species. Consequently, species less effective at taking up K, but using taken shoots. most recent cultivar angustifolius, Kalya, was older Merrit shoots, therefore future need be screened their ability use K. indicated Kalya 2141 inefficient had similar medium values: Myallie, Tanjil, Tallerack, Quilinock, Belara Merrit. As measured 42 day seedlings, diagnostic critical 90% about (g K/kg) 40 wheat, 37 for canola, 16 14 luteus.