JWSS - Journal of Water and Soil Science

Limited water resource in arid and semi-arid areas is one of the most important problems in the agricultural sector. Therefore, the use of non-conventional water resources becomes more important. For this reason, a study was conducted on barley to evaluate the effect of irrigation with sugar plant wastewater as a factorial randomized complete block design field experiment. Treatments include water well I1, wastewater I2, combined water and wastewater I3 (the ratio of seven to one, according to local practice) in two levels of without water stress S1 and  %75 water stress S2 and treatment I1S1 was considered as control. The results showed changes in surface tension of %1 had a statistically significant effect on plant height, grain yield and root length. As well changes of irrigation water in the level of %1 had a statistically significant effect on plant height, grain protein yield and root length. Maximum grain yield was obtained in treatment I1S1 with the weight of 4034 kg per hectare and lowest grain yield was obtained in treatment I2S2 with the weight of 1564 kg per hectare. The lowest and highest percentages of protein content were observed in treatment I1S1 for 12.37% and treatment I2S2 for 13.47%, respectively. The plant height showed the highest amount in control treatment, i.e. 82.87 Cm.

Due to the availability of limited water resources in the country, it is necessary to use unconventional water. On the other hand, application of minerals such as Zeolite (Zo) is necessary to simulate plant growth and reduce the harmful effects of wastewater. The present study was conducted to investigate the effect of irrigation by wastewater with Zo on cotton (Gossypium herbaceum) based on a randomized complete block design with factorial arrangement in Torbat Heydarieh, 2014. For this purpose, irrigation water treatment at 2 levels (I1: irrigation with normal water and I2: irrigation with effluent) and Zeolite (Zo) treatment at 2 levels (Z₀: No Zo application and Z₁: application of K⁺ Zeolite at 4% weight) were considered with three replications. The results showed that the irrigation water type had a significant effect on the seed index, yield, cotton weight, number of leaves per plant and the lint percentage. The rate of Zeolite (Zo) did not show any significant effect on any traits, such as Kiel percentage, seed index, cotton weight, number of leaves per plant and cotton yield. The interaction between the irrigation water and the amount of Zo had a significant effect only on the number of leaves per plant. The results also showed that the highest lint percentage, cotton weight and number of leaves per plant in the irrigation by the effluent with No Zo application (I₂Z₀) treatment with the values of 64.3 and 11.23 gr and 36.3 numbers and the lowest values for the seed index, yield and number of leaves per plant in irrigation by normal water with No Zo application (I₁Z₀) were obtained with the values of 0.52 and 78 gr and 24.8.