Response of linseed (Linum usitatissimum L.) to bio-fertilizer, chemical nitrogen and phosphorus under drought stress conditions
Subject Areas : Journal of Plant Ecophysiology
seyed anis sadeghian dehkordy
1
(student/shahrekord university)
ali tadayyon
2
(Professor/shahrekord university)
Keywords: Grain yield, Harvest index, Number of capsule, oil percent,
Abstract :
In order to evaluate the effects of drought stress, bio-fertilizers and chemical fertilizer (N+P) treatments on some quantitative and qualitative traits of linseed, a field experiment was conducted as split-plot in randomized complete block design with three replications at the Research Station of faculty of Agriculture, Shahrekord University in 2013-2014. Four levels of drought stress of no stress (with potential 0.03 mega pascal), mild (with potential 0.35 mega pascal), medium (with potential 0.65 mega pascal) and severe stress (with potential 0.95 mega pascal) as main factor and five fertilizer treatments of control (no ferlilizer), chemical fertilizer (N+P), biofertilizer of Azotobarvar 1, Barvar 2 and combination of Azotobarvar 1+ Barvar 2 as sub factor were used. All traits were significantly affected under drought stress and fertilizer treatments. Interaction between drought stress and fertilizer treatments significantly affected only in harvest index and oil content while the number of seeds per capsule, grain yield, and 1000 seeds weight was not significant. Maximum number of capsule per plant, grain yield and 1000 seeds weight obtained under no drought stress conditions. Among fertilizer treatments, the greatest effect observed in the treatment of chemical fertilizer (N+P) and bio-fertilizer Azotobarvar 1+Barvar 2 respectively. Regarding to the results obtained in this experiment, based on the positive effect of biological fertilizers Azotobarvar 1 and Barvar 2 on the measured traits and because of the environmental effects of fertilizers Using biological fertilizers In comparison with chemical fertilizers is preferred.
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