The role of anti transpiration agents in improving rice yield and its components under the influence of salt stress

Abstract

A field experiment was conducted during summer season of 2017 in the field crops sciences department, College of Agricultural Engineering Sciences, University of Baghdad, Al- Jadriya, in order to study the role of anti-transpiration agents on rice under salt stress conditions. A randomized complete Block design (RCBD) with three replicates with split plot arrangement was used. Water quality treatments with four levels (Q0, Q1, Q2 and Q3) were used as main plots whilst anti- transpiration agents (Control, SA and KA) represent the sub plots. Results showed that irrigating rice with Q1 water (25% salty water fallowed by 75% river water) during the growing season, provide with higher means of number of seeds per panicle, lowest % of seed infertility to be 90.11,41.82% respectively, Which did not differ from those in Q0 irrigation treated with river water (control). Q0 treatment have superiority on other studied traits and did not differ from Q1 significantly on the characteristics of , active tillers, harvest index and yield to be 802.5,790.8 kg h-1 respectively. Spraying rice crop with salicylic acid twice in growing season improves means of number of active tillers ,number of seeds per panicle, weight of 1000 seeds, yield and harvest index to be (530.25 m2,81.58,7.95,668.2 and 4.65% respectively) while it does not affect % seed infertility. However results showed significant interactions among studied traits except for, number of seeds per panicle, % of seed infertility). SA*Q0 gave the highest interaction comparing with other means. We can conclude from the above the possibility of irrigation with Q1 water instead of Q0 (river water) because there is no significant difference among them in all of studied traits including yield, and can expand the production of additional areas using saline water Q1 without affecting the production. The superiority of superiority of applying salicylic acid as its improve resistance to salt stress in yield and qualities of rice and its components