Higher stock plant nitrogen and phosphorus levels favor rooting on mini cuttings of tea tree

Abstract

The impact of N and P nutrition of stock plants of tea trees (Melaleuca alternifolia) on rooting and survival of cuttings was investigated in order to optimize adventitious rooting and growth of scion cuttings used for clonal propagation. High rates of 300 kg N ha–1 and 100 kg P ha–1 led to higher rooting, shoot elongation, and survival of the cuttings than low rates of 25 kg N ha–1 and 5 kg P ha–1, and are thus recommended for tea tree clonal propagation.

Influence of shadowing in Sequoia sempervirens (D. Don) Endl. mini-stumps and mini-cuttings

“…However, although the results do not show significance regarding the amount of mini-cuttings according to the treatments, during the evaluation it was possible to observe visual differences in qualitative variables such as the degree of lignification of the sprouts. The sprouts from T2 and T3 presented a lower degree of lignification and according to Lowe et al (2021) this may favor rooting. Lima et al (2011), studying the rooting capacity of Maytenus muelleri Schwacke cuttings, reported that the use of less lignified material results from pruning, can promote rooting rates above 50%.…”