The Investigation of adaptability and growth of two paulownia species in Gilan province

The Paulownia is a surprising tree among the fast growing tree species. It can produce wood material more than popular trees. Therefore it is suitable for wood culture programs. The species of Paulownia genus have high potential for wood production in growth normal condition. Special attention to plant fast growing tree species with short rotation harvest is very important in low capitation forest countries, therefore the compatibility of two Paulownia species in north of Iran.was studied In this study the seeds of P. fortunei and P. tomentosa were applied and then they were planted in Safrabasteh and Lashtnesha research stations. From each species 49 seedlings(one-year-old) were planted with 5*5 meters spacing. In the end of growth season we were measured some of growth parameters such as survival percent, diameter of breast height (dbh) and height. The results showed that in the first growth year dbh, height and survival percent were more than the third growth year. Unfortunately, because of hydromorphic soil, high level underground water table and sensitivity of Paulownia species to water logged phenomenon, this investigation was not successful. The survival percentage in the first and third of growth season for two species was 47.7%, 46.3% and 11%, 24% respectively.