EFFECTS OF WATER STRESS, NITROGEN LEVELS AND APPLICATION TIMES ON YIELD AND YIELD COMPONENTS OF SUNFLOWER AT DIFFERENT GROWTH STAGES

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OMIDI ARDALI GH.; BAHRANI M.J.

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Journal: Journal of Water and Soil Science Year:2011 | Volume:15 | Issue:55 Page(s): 199-207

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Title

EFFECTS OF WATER STRESS, NITROGEN LEVELS AND APPLICATION TIMES ON YIELD AND YIELD COMPONENTS OF SUNFLOWER AT DIFFERENT GROWTH STAGES

Author(s)

OMIDI ARDALI GH. | BAHRANI M.J. | Issue Writer Certificate

Keywords

WATER STRESSQ2

1000-SEED WEIGHTQ1

SEED YIELDQ2

OIL YIELDQ2

Abstract

The optimum levels of soil moisture and nitrogen are important to obtain higher yields. To investigate the effects of WATER STRESS, nitrogen levels and application times on yield and yield components of sunflower (Helianthus annuus L.), the cultivar Euroflor at different growth stages, a two year study (2006-007) was conducted at Research Fields of College of Agriculture, Shiraz University (Badjgah) using a split factorial design with four replications. Treatments were WATER STRESS at three levels, (non-stress and stress at flowering and seed formation) as main plot and three N levels (0, 70, 140 kg ha-1) and N application times (split application at planting and stem elongation, planting and heading, and stem elongation and heading) as subplot. Number of seed per head, 1000-SEED WEIGHT, SEED YIELD, OIL YIELD and HI were measured. Results showed that the effects of WATER STRESS and N rates on yield and yield components were significant, but the effects of N application times and interaction between WATER STRESS, nitrogen rates and application times were insignificant. Overall, the crop showed more sensitivity to drought stress at flowering time, and 70 kg N ha-1 is recommended for the region.

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APA: Copy

OMIDI ARDALI, GH., & BAHRANI, M.J.. (2011). EFFECTS OF WATER STRESS, NITROGEN LEVELS AND APPLICATION TIMES ON YIELD AND YIELD COMPONENTS OF SUNFLOWER AT DIFFERENT GROWTH STAGES. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 15(55), 199-207. SID. https://sid.ir/paper/14773/en

Vancouver: Copy

OMIDI ARDALI GH., BAHRANI M.J.. EFFECTS OF WATER STRESS, NITROGEN LEVELS AND APPLICATION TIMES ON YIELD AND YIELD COMPONENTS OF SUNFLOWER AT DIFFERENT GROWTH STAGES. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2011;15(55):199-207. Available from: https://sid.ir/paper/14773/en

IEEE: Copy

GH. OMIDI ARDALI, and M.J. BAHRANI, “EFFECTS OF WATER STRESS, NITROGEN LEVELS AND APPLICATION TIMES ON YIELD AND YIELD COMPONENTS OF SUNFLOWER AT DIFFERENT GROWTH STAGES,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 15, no. 55, pp. 199–207, 2011, [Online]. Available: https://sid.ir/paper/14773/en

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