Akademik Veri Yönetim Sistemi
Journal of Plant Nutrition, cilt.46, sa.2, ss.184-200, 2022 (SCI-Expanded)
© 2022 Taylor & Francis Group, LLC.The part of the tea plant evaluated nutritionally and economically are the shoots. For the shoots to be nourished, essential nutrients must be present in soil and leaves under the shoots which serve as a kind of storage organs. However, boron is deficient in soil for its high active-acid level and precipitation in the Black Sea Region in Turkey and the plant due to its immobility. A two-year fixed field experiment was designed in the Arhavi district of Artvin/ Turkey to determine the effect of soil and foliar boron application on the concentration, mobilization, accumulation, and storage of boron in the leaves under the harvest base of the tea plant. Disodium Octaborate Tetrahydrate (DOT, Na2B8O13.4H2O, 20.8 % B) was used as a boron source and, four applications were conducted: S0L0, S0L1, S1L0, S1L1 (S: Soil application, 0 kg B ha-1, and 4 kg B ha-1; L: Foliar application, 0 mg B L-1, and 400 mg B L-1). As a result of the analysis, boron accumulation was determined mainly in the old leaves, and the concentration decreased toward the young leaves. Moreover, the boron concentration in the leaves under the harvest base gradually reduced toward the end of the harvest season. However, tea plants deprived of boron positively reacted to soil and foliar boron fertilization, and the boron concentration of the leaves under the shoots increased significantly and reached above the critical deficiency limit (> 30 mg kg-1). The most successful application was S1L1, followed by S1L0 and S0L1, respectively.