تأثير الأصل وعنصري البورون والزنك في المواصفات الكيميائية لثمار يوسفي البحر الأبيض المتوسط (اليوسفي البلدي) (Citrus deliciosa Tenore)

Abstract

This study was conducted during the year 2023 on Mediterranean tangerine trees (Mandarin tangerine), grown at the syano Research Station of the General Authority for Scientific Agricultural Research (Lattakia Research Center), with the aim of studying the effect of the rootstock, and foliar spraying with boron and zinc in the chemical specifications of the studied species, The study included three rootstock, Troyer Citrang, Citrumelo 4475 and trifoliate orange (Poncirus Trifoliata. (L). and spraying with the Boron element at a concentration of 200 ppm, and zinc element at a concentration of 100 ppm, singly and mixed. The results showed that the rootstock has a significant effect on the chemical specifications of Mandarin tangerine fruits, as the rootstock gave Troyer Citrang to the best chemical specifications (TSS%, TS%, TA%, V.C and chlorophyll content in leaves), outperforming the rootstock Citrumelo 4475 and trifoliate orange (L). With the two elements of boron and zinc mixed, it was the best transaction in comparison with Control and singly spraying.