A study on the length of slip and rooting promotion method influenced by cutting of Pterostyrax hispida
2009
Takahashi, Y.(Tokyo Univ. of Agriculture, Atsugi, Kanagawa (Japan)) | Nishio, K. | Sugawara, I. | Uehara, I. | Sato, A.
Serious forest floor vegetation damage by deer grazing has been extensive in the Okutama region in Tokyo. Such damage has also caused forest soil erosion. One of the solutions for the problem, planting the particular tree species for which deer has less appetite, can be effective. Pterostyrax hispida is one of the species which have regenerated and grown vigorously in Okutama region, so we believe it is one of the suitable species for planting. We attempted rooted cutting method of Pterostyrax hispida. On the cutting examination, two years-old sprouts from rootstock of natural young trees were used for scions of cutting, and then were embedded into Kanuma soil of planters. In addition, we tested IBA (Oxyberon) treatment and scion length. After cutting, most of scions formed callus and root from 2 to 3 weeks and 3 to 4 weeks, respectively. The results showed that IBA accelerated rooting and making callus. 30 cm length scions made more roots than 15 cm ones. Therefore, we recommend the use of the scion of 30 cm for propagation. We also compared between powder and liquid IBA, but there were few differences between the treatment methods. However, we would recommend the powder type because of easier and more efficient treatments. From these results, we reached the conclusion that rooted cutting is a safe and efficient method for the propagation of Pterostyrax hispida.
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