Effect of biological fertilizer application on quantitative and qualitative traits of spring safflower under deficit irrigation
Subject Areas : Journal of Plant EcophysiologyM. AghaAlikhani 1 , A. Roozbahani 2
1 - گروه زراعت و اصلاح نباتات، واحد رودهن، دانشگاه آزاداسلامی، رودهن، ایران
2 - گروه زراعت و اصلاح نباتات، واحد رودهن، دانشگاه آزاداسلامی، رودهن، ایران
Keywords: Irrigation regime, Oil seed plant, nitragin, seaweed extract, yield and oil percentage,
Abstract :
In order to study the effect of biological fertilizer application on quantitative and qualitative traits of Goldasht spring safflower cultivar (Carthamus tinctorius L.) under low irrigation, an experiment as split plot in randomized complete blocks design with three replications was conducted in 2012 at the Agricultural Research Station of Islamic Azad University of Roudehen branch . Main plots were irrigation regime treatment consisted of four levels (optimum irrigation, low irrigation at flowering, low irrigation at seed formation, low irrigation at two stages of flowering and seed formation and biological fertilizer treatment as subplot consists of four levels: no biological fertilizer application, application of nitragin, application of seaweed extract and application both of seaweed extract and nitragin, respectively. The results showed that the effect of irrigation regime and biological fertilizer treatments on all traits were significant. The highest grain yield and yield component losses was observed in low irrigation at two stages of flowering and seed formation and the highest ones was observed in control. Also, between biological fertilizer levels, nitragin with seaweed extract produced the highest yield and yield component and application of nitragin was better than seaweed extract and the lowest treats rates were found in control treatment. In general, in this area and similar areas biological fertilizer can be used in order to reduce the side effects of low irrigation,
