Evaluating the impacts of different levels of conjunctive irrigation with saline and non-saline water on morphological attributes of sorghum (Sorghum bicolor (L.)Moench)
Subject Areas : Journal of Plant Ecophysiology
saeed ghaedi
1
(دانشجو)
payman Afrasiab
2
(عضو هیئت علمی دانشگاه زابل)
Keywords: Saline and non-saline water conjunction, Sorghum yield, Management of Saline Water,
Abstract :
Due to the limited freshwater, farmers have to use exotic water, such as saline water. The aim of the present study is to propose an effective way of how to use saline water for irrigation of forage sorghum in order to save more freshwater in Sistan region To do this, an experiment was performed as a randomized complete block design with six treatments and three replications in experiment field of Zabol University within 2013 spring. Treatments included: control treatment (100 % freshwater), treated with two-thirds of salty, one-half of salty, one-third of salty, 90% salty and 100% salty water. The investigated cropping indices were dry weight of stem, leaf and aerial organs of plant, plant height and leaf area index. The results indicated that one-third treatment was not significantly (p<.05) different from control in terms of the dry weight of leaf and leaf area index and had the smallest difference with control in other plant attributes. In this treatment, the dry weight of leaf, stem and areal organs were increased about 141.9, 147.7 and 156.4%, respectively in comparison to the completely salty treatment. Also, one-half and two-thirds treatments showed an acceptable performance. It seems that this kind of saline and fresh water conjunction, in any way, has a high efficiency in reducing salt stress on plant.