Effect of foliar application of salicylic acid and selenium on yield and yield components of dry land wheat

Document Type : Research Paper

Authors

1 Assist. Prof., Dept. of Agronomy, Saveh Branch, Islamic Azad University, Saveh, Iran

2 Graduated M. Sc., Dept. of Agronomy, Saveh Branch, Islamic Azad University, Saveh, Iran

Abstract

To investigate the effects of foliar application of salicylic acid and selenium on agronomic characteristics and grain protein content of dry land wheat, Sardari variety, a experiment factorial was conducted in randomized complete block design with three replications. Experimental factors were foliar application of 1 mM salicylic acid at of booting, flowering and dough developmental stages along with control (spraying with water), and foliar application of 18 g/ha selenium at stem elongation, heading (spike emergence) and milk developmental stages along with control (spraying with water). The results showed that both salicylic acid and selenium improved the studied traits, so that foliar application of salicylic acid at flowering stage had the highest biological yield (9202 kg/ha) and grain protein (11.3%), and foliar application of selenium at heading and stem elongation stages had the highest biological yield, spike length, grain protein content and number of tillers. Also, combined application of salicylic acid and selenium compared to their separate application had better results on plant height, yield and yield components of wheat, so that the highest grain yield, number of spikes and number of grains per spike were observed in foliar application of salicylic acid-selenium at flowering-stem elongation and booting-stem elongation stages. Therefore, the results of this study showed that foliar application of salicylic acid at booting and flowering stages along with foliar application of selenium at stem elongation and heading stages were the best treatments in this experiment and it is recommended to improve the yield and yield components of dry land wheat.

Keywords


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