Survival and growth success of russian olive (Elaeagnus angustifolia L.), salt cedar (Tamarix smyrnensis bunge) and white poplar (Populus alba l.) seedlings in salt-sodic central anatolia areas with gypsum and sulfur applications

An important part of the valley bases in Central Anatolia shows salt-sodic soil characteristics. In this study, it is aimed to improve the soil by washing more sodium than salty-sodic soils with gypsum and sulfur application. After chemical treatment was applied to the soil, tamarisk (Tamarix Smymensis Bunge), spindle (Elaeagnus angustifolia L.) and abele (Populus alba L.) seedlings were planted, and their survival rates and growth performances were followed. Three-year-old seedlings were planted in trial units in the autumn of 2013 at 1.5 X 1.5 m intervals. By the end of September 2015, height and diameter measurements of saplings were made. At the end of the second growth season, it was determined that 80% of the tamarisk had the highest percentage of life. Abele showed an average survival rate of 36% in all processing areas. While spindle was 50 cm in gypsum and sulfur were applied, it was able to grow only 25 cm in the control areas. The average diameter of the seedling saplings was measured as 9.3 mm in gypsum and sulfur treated areas and this value was recorded as 5 mm in the control areas. Abele achieved 42% more growth in gypsum and sulfur treated areas than in control areas. In terms of Tamarisk growth, no statistically significant difference was found between the sites. Among the tested species, spindle was found that the spindle showed the best survival rate and growth performance in all fields.