ISHS Acta Horticulturae 772: XXVII International Horticultural Congress - IHC2006: International Symposium on Enhancing Economic and Environmental Sustainability of Fruit Production in a Global Economy
STUDY ON ADAPTATION OF BLACKCURRANT TO SOIL PH |
| Authors: | Z.D. Zhang, H.G. Liu, Y.D. Li, G.H. Gong, L. Wu, X.D. Tang |
| Keywords: | sulphate, soluble salts, growth, flowering, Ribes |
| Abstract:
There are large areas of alkaline and acid soil areas in the Northeast region of China. In this experiment, the adaptation of the blackcurrant ‘Ben Lomond’ to soil pH value was studied by planting one-year-old plants into plastic barrels with 6 soil treatments: pH 10.22 (T1), pH 8.72 (T2), pH 8.19 (T3), pH 6.56 (T4, CK), pH 6.05 (T5) and pH 4.33 (T6) which were prepared either by mixing neutral garden soil (pH 6.56) with alkaline soil (pH 10.22) or mixing neutral garden soil with sulphur powder. The results indicated firstly that although blackcurrant had a wide range of adaptation to pH, it adapted better to neutral and subacid soil. It could survive and grow in the pH range from 4.33~8.72. All plants of T1 died. Plants in T2 died gradually after several months growing, despite the planting survival of 97% during the initial stage of growth. The other treatments had 100% survival. The plants in pH 4.33~8.19 were able to grow and blossom. All the total dry weights per plant of treatments T3, T5, and T6 exceeded CK by more than 25%, but the flowering numbers were lower than that of CK. Secondly, soluble salt content of CK was the lowest at 0.25% while that of acid and alkaline soil treatments had a tendency to higher soluble salt content, with the highest level at 18% (pH 10.22). High soluble salt content caused an increase in both leaf electrolyte leakage and peroxidase activity. | |
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