There are many references about leaf mineral composition standards for pome fruit cultivars (including apple and pear trees). But, unfortunately there is very little information about leaf mineral composition standards (including leaf-N,-P,-K,-Ca,-Mg,-B, -Fe,-Zn,-Mn, - Cu) for quince cultivar trees. Actually, there is some valuable information about the fruit of this species, but I haven't seen any information about the leaf nutrition concentration of quince cultivar in the literature.
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www22.sede.embrapa.br/... 2)%20Guidelines%20%20for%20Integrated%
Please find here the abstract of very good work , what you desire , hope , you find it useful:
Abstract. : During 2012 and 2013 we investigated impact of quinces MA and BA.29 rootstocks on leaf macro- and micronutrients amount at 60 days after full bloom (DAFB) and deviation from optimum percentage (DOP and ΣDOP indexes) of three pear cultivars grown at Cacak region on heavy and acidic soil. Results showed that rootstocks significantly influenced leaf P, Ca and B levels, whereas impact on other leaf nutrients is minor. Quince MA increased leaf P and Ca contents, while BA.29 induced higher leaf B level. Stronger effect than rootstock on leaf nutrients had cultivar, although differences among them for leaf N, Mg and Fe were not significant. Leaf of ‘Abbé Fetel’ on BA.29 had the highest K, Ca, Cu and B amounts, whereas on MA this cultivar had the highest Mn concentration. Also, ‘Abbé Fetel’ alongside with ‘Conference’ on MA had the highest and similar leaf Ca, Cu and Zn amounts. ‘Starking Delicious’ on BA.29 had the highest leaf P content. The DOP index showed high deficiency of K and Mn on both rootstock and Ca on BA.29. Other leaf nutrients tended to have a DOP values close to the optimum level in general. According to ΣDOP index, BA.29 induced better balanced leaf nutritional values as compared to MA for all nutrients. Among cultivars, ‘Abbé Fetel’ on both rootstocks and ‘Conference’ on BA.29 showed the best balanced nutritional values, whereas ‘Starking Delicious’ exhibited a wider imbalance in nutritional values for all nutrients. Source : by Tomo Milošević and Nebojša Milošević,Acta Sci. Pol. Hortorum Cultus, 15(5) 2016, 45-55.
A PDF of another very interesting work for your reference please ..
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