“…It is important to investigate many quality characteristics in a variety of leafy crops from a mix-use system point of view. There are some reports on the qualities of baby-leaf crops: some examples refer to the ascorbic acid concentrations in mizuna (Martínez-Sánchez et al, 2008), watercress (Martínez-Sánchez et al, 2008;Pignata et al, 2016), leaf lettuce (Kroggel et al, 2011;Samuolienė et al, 2012), rucola (Hall et al, 2015;Martínez-Sánchez et al, 2008;Nordmark et al, 2014), spinach (Morgen et al, 2012), corn salad (Nordmark et al, 2014), and komatsuna (Kroggel et al, 2011); the nitrate concentrations in green leaf lettuce (Aires et al, 2013), red leaf lettuce (Aires et al, 2013), watercress (Aires et al, 2013), rucola (Aires et al, 2013;Nicola et al, 2015), chard (Aires et al, 2013), corn salad (Aires et al, 2013;Fontana et al, 2004), garden cress (Nicola et al, 2015), spinach (Nicola et al, 2015), and bladder campion (Nicola et al, 2015); and the shelf lives of spinach (Conversa et al, 2014;Medina et al, 2012) and rucola (Nicola et al, 2003). However, fewer than 5 crops were checked in terms of quality measurements, even though yield research was carried out by using 10 to 20 crops (Borrelli et al, 2013;Fujime, 2005).…”