Agamic propagation of giant reed (Arundo donax L.) in semi-arid Mediterranean environment

This review describes giant reed propagation methods taking into account propagation organs and transplanting times. Field results of researches carried out in semi-arid Mediterranean environment are presented and discussed with the aim to help producers to make decisions on the most suitable establishment method and season of transplant. Temperature and soil water availability are limiting factors constraining optimal establishment of giant reed in Mediterranean semiarid environment. Days with maximum temperatures of 17°C (T max) and minimum temperatures over 7.5°C (T min) coupled with good soil water availability were found as suitable for stems sprouting. Rhizomes optimal transplanting time resulted in spring, while horizontal stem cuttings in autumn. Vertical stem cutting showed worst results in stem density and biomass yield in every transplanting time. Rhizomes of big size showed greater biomass dry matter yield both at the first year and in the subsequent years after establishment. Stem cuttings biomass yield level off in the subsequent years after establishment. The irrigation supplied during the establishment showed a beneficial effect in all transplanting times and propagation methods. © V. Copani et al., 2013.