The stem cuttings of giant reed crop with a certain number of dormant viable buds are suitable to produce new plants (by growth of node shoots and development of adventitious roots); preliminary studies show that the uses of stem cuttings is less expensive than rhizome cuttings. However in the semi-arid Mediterranean environment the soil water content can be a limiting factor. Bearing this is mind, an experimental research was carried out in spring-summer 2009, in the Catania plain (Southern Italy) to compare sprouting rate of giant reed cuttings from basal (BS), median (MS), apical (AS) area and a mix (XS) of them, in two soil water conditions: Irrigated (100% ETm restoration from transplant to end of dry summer season, 267.5 mm); Rainfed (irrigation only at the planting date, 17.5 mm ). The results indicate that the number of sprouted nodes at the end of August were 0.7 nodes m-2 (11.53% of the buried nodes), without any difference between part of the stems while in percentage of buried nodes, significantly higher in BS portion (17.88%) than in AS portion (6.27%). The sprouted nodes were significantly higher in the well watered condition (0.95 viable nodes m-2) than in rainfed ones (0.45 viable nodes m-2); equally stem density at the end of the number of stems per square meter emission was significantly affected by soil water conditions (1.63 and 4.28 stems m-2 in rainfed and irrigated condition respectively). Moreover the research allowed to point out that the minimum water requirement for stem sprouting was 25% of the available soil water content.
|Titolo:||The agamic propagation of giant reed (Arundo donax L.) by means of stem cuttings|
|Data di pubblicazione:||2010|
|Appare nelle tipologie:||4.1 Contributo in Atti di convegno|