Using Licorice Compost (Glycyrizha glabra) to educe the Water Stress Effect in Greenhouse Cucumber

Nowadays in order to produce healthy foods، application of compost and other organic fertilizers has received more attention as a suitable alternative for utilization of chemical fertilizers. It’s due to the fact that excess use of chemical fertilizers can cause threats to human health and lead to salinity or pollution of agriculture soils. Due to low organic-matter content in most soils in arid and semi-arid regions of Iran، application of organic-wastes’ like compost can increase water-holding capacity of the soil. In order to evaluate the effect of licorice compost application on decreasing of water stress in greenhouse cucumber (cv. Negin)، an investigation was conducted in a research greenhouse of Fasa in 2012. The experiment was factorial in a randomized completely block design with four replications. Treatments were composted root residue of licorice in four levels (0، 10، 20 and 40 percent of pot soil) and three irrigation regimes (50، 75 and 100% of field capacity moisture). Results showed that increasing in the amount of waste Licorice significantly increased shoot dry and fresh weight of cucumber. By reduction in moisture content of the soil and the amount of licorice residue، number of flower and fruit، plant height and internode length were reduced significantly. But 100% of field capacity moisture and 40 percent of licorice residue increased fruit weight and yield per plant significantly. The result of this study showed that water stress in cucumber can be controlled using licorice residue.