Effects of application nitrogen and fertilizer manure on physiological characteristics of Calendula (Calendula officinalis L.) under water deficit stress

The effects of water deficit stress and fertilizer manure and nitrogen were studied on yield and physiological characteristics of Calendula (Calendula officinalis L.). An experiment was conducted at Research Field of Islamic Azad University of Takestan branch in 2010. Field experiment was carried out by a split plot design based on completely randomized block design with 4 replications. treatments were three levels of stress as irrigation after 40، 80 and 120 mm water evaporation from evaporation pan، and consumption of 90 kg/ha nitrogen، 75% N and 10 ton/ha fertilizer manure، 50% N and 20 ton/ha fertilizer manure، 25% N and 30 ton/ha fertilizer manure، 40 ton/ha fertilizer manure. The results indicated that water deficit stress had significant effect on diameter flower، plant height، biologic yield، flower yield and productivity effort. The highest biologic yield to 7416 kg/ha and productivity effort to 26. 44 percent when irrigation after 40 mm evaporation from pan class A. Application fertilizer manure and nitrogen had significant effect on biologic yield، flower yield and productivity effort. The highest biologic yield، flower yield and productivity effort application 40 ton/ha fertilizer manure. Irrigation and application fertilizer manure and nitrogen interactions effect were significant in flower yield. The highest flower yield when irrigation after 40 mm evaporation from pan class A and application 40 ton/ha fertilizer manure. It seems، applging of Nitrogen fertilization had not significant effect on physiological characteristics on Calendula in water deficit stress.