Simultaneous Effect of Deficit Irrigation and Salinity on Yield and Yield Components of Tomato under Field Conditions

• Main Authors: Masoud Mohammadi, Abdol Majid Liaghat, Hosein Molavi
• Format: Article
• Language: fas
• Published: Shahid Chamran University of Ahvaz 2011-05-01
• Series: علوم و مهندسی آبیاری
• Subjects: salinity and drought stress; tomatoes; yield
• Online Access: http://jise.scu.ac.ir/article_13276_1cccae9a6c6103b28d5484f65a8899d1.pdf

Salt and drought stress is one of the main problems of Agricultural production in many parts of<br />the world, especially in arid and semi-arid area. Therefore, this study was conducted to investigate<br />the effect of both stresses (individually and simultaneously) on yield and yield component of tomato<br />(Super Strain B) in order to program irrigation management in Karaj. The experiment was carried out<br />as Factorial on base of complete randomized design with three replicates including two factors:<br />Salinity and irrigation water. Salinity and irrigation water factors consisted of four levels (S1=0.7,<br />S2=4, S3=8 and S4=12 dS/m) and three levels (W1=100, W2=75 and W3=50 percent of water<br />requirement), respectively. The soil texture was sandy loam. The results of this study showed that the<br />yield production reduced by increasing salinity and drought stresses. The maximum yield (240.7 g)<br />was corresponded to W1S1 treatment and the minimum yield (48.58 g) was corresponded to W3S4<br />treatment. Salinity, deficit irrigation and their interaction had significant effect (p<0.01) on dry<br />weight, root length and tomato evapotranspiration, but they did not have any significant effect on the<br />number of fruits. The combined impact of salinity and deficit irrigation did not have any significant<br />effect on plant height and dry weigh.