Abstract
Sources of fertilizer are one of the major factors influencing baby spinach leaf texture, sweetness, bitterness and after-taste. However, the effects of fertilizer sources on baby spinach growth performance and consumer preferences are not known. A survey was carried out at the Seke Teachers’ College (SKC) community, Zimbabwe to determine the consumer preferences on the baby spinach grown on the organic fertilizer (cattle, poultry and goat manures) as well as on control inorganic fertilizers (7% N, 14% P, 7% K). The study used 32 females and 30 males as panellists for sensory evaluations. Organoleptic tests were performed for the baby spinach leaves using a panel of 62 testers. An interval line scale (16 cm long) was used to measure the liking for sweetness, colour, bitterness and after-taste. A 9-point hedonic scale was used to decide the overall preferences. Organoleptic tests showed significant differences (P<0.05) in appearance and taste between the inorganic and organic fertilizers used. The baby spinach leaves grown on organic fertilizers was preferred more compared to that grown on inorganic fertilizer (control). Therefore, it is recommended to use organic fertilizers in baby spinach production in order to satisfy consumer preferences.
Highlights
Spinacia oleracea L. is a leafy vegetable which is rich in core nutrients and phytochemicals (Mehta & Belemkar, 2014)
The source of fertilizer has a major influence on the baby spinach leaf taste
The quantities and state of nutrient elements such as N, P, K, Ca, Mg contained in a fertilizer affects the leaf quality consumers taste preferences of the baby spinach (Wang et al, 2008)
Summary
Spinacia oleracea L. (baby spinach) is a leafy vegetable which is rich in core nutrients and phytochemicals (Mehta & Belemkar, 2014). The S. oleracea is high in vitamin C, as well as other minor elements such as magnesium (Mg), zinc (Zn), iron (Fe) and selenium (Se) (Parwada et al, 2020) The production practices, such as fertilization, deficit irrigation, and postharvest storage conditions and duration (Mudau et al, 2006), have an impact on the bioactive compounds as well as on the taste of leaf vegetables (Turkmen et al, 2005). The quantities and state of nutrient elements such as N, P, K, Ca, Mg contained in a fertilizer affects the leaf quality consumers taste preferences of the baby spinach (Wang et al, 2008)
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