Özet:

Salt stress is one of the most important factors limiting the growth and yield of the plants, especially the ones cultivated in the arid and semi-arid areas. The purpose of this study was to determine the effects of irrigation waters containing various salt concentrations on the seed germination, growth, yield and yield components in beans. Eight different concentrations (EC: 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5 and 4.0 dS m-1) of salinized waters were used for the irrigation applications. The results of the research showed that the various salt concentrations statistically significantly negatively affected the germination rate, growth and yield parameters of the bean seeds. The highest germination rate was obtained from the salt applications with 0.5, 1.0, and 2.0 dS m-1; however, the salinity levels above 2.5 dS m-1 substantially decreased the germination rate. As the salt concentrations increased, the dwarfing effect appeared in the plants and this effect was observed more by increasing the salinity level to 2.5 dS m-1. The number of pods per plant, the number of seeds per pod, the 100-seed weight, and the seed yield substantially decreased at the salinity levels above 3.0 dS m-1, 2.5 dS m-1, 2.0 dS m-1, and 2.0 dS m-1, respectively. The data obtained; showed that low salt concentrations will not affect germination, growth and yield parameters negatively, irrigation water salt concentration limit should be 2.0 dS m-1 and increases above the level may put bean cultivation at risk.

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