Summary
A sand culture experiment was conducted under glasshouse conditions to study the effect of gibberellic acid (GA3), indol-3yl-acetic acid (IAA) and 2,4-dichlorophenoxy acetic acid (2,4-D) on root cation exchange capacity (CEC) of two genetically different tea clones. Results showed that application of GA3 and IAA progressively increased root CEC in both clones when their concentration was raised from 0 to 100 mgl−1. 2,4-D at its lower concentration (<25 mg l−1) produced the same effect, while at higher concentration (100 mg l−1) there was a decrease in root CEC. The root CEC was correlated negatively with brown: white root ratio and positively with top growth of clonal tea plants.
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Chamuah, G.S., Dey, S.K. The effect of growth regulators on root cation exchange capacity of young clonal tea plants. Plant Soil 79, 441–444 (1984). https://doi.org/10.1007/BF02184335
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DOI: https://doi.org/10.1007/BF02184335