Abstract:
This study was carried out to determine the effects of the different levels of the irrigation water salinity (500, 1000 and 2000 umhos/cm, 25 °C) and fertilization (Gi, G2 and G3), and of the interaction of these two applications on the growth and yield of the cucumber plant grown in the greenhouse as single crop. While the soil salinity at the beginning of the study was 1.6 mmhos/cm, 25 °C, at the end of the growing period it was found to be 3.56, 4.50 and 5.90 mmhos/cm, 25 °C for water applications with 500, 1000 and 2000 umhos/cm, 25 °C of the EC levels respectively. However, neither the increase of salinity in the soil, and nor the fertilizer applications could affect the yield of the cucumber significantly. It is determined that there were no significant changes in the fruit hardness, total dry matter in the fruit, N, P, and Cu content of the leaves with increasing levels of the irrigation water salinity. Nevertheless, while the K content of the leaves decreased, Ca, Mg, Na, Fe, Mn and Zn content increased considerably. The number of the fruits increased with the application of the fertilizer in increasing levels, but no differences could be found in the other factors examined In conclusion, it is understood that when the soil salinity level at the beginning of the growing season is low, 1.6 mmhos/cm, 25 °C, there could be no significant decrease in the yield, even after the applications of irrigation waters with high EC (1000 and 2000 umhos/cm, 25 CC) values. But at the end of the growing period it is impotrant to wash away the salt accumulated in the soil.
