The study planting date effects on yield and components yield of varieties sunflower area in Rudab Bam

Subject Areas : New Finding in Agriculture

S. Haerei Nejhad ¹ , H. Madani ² , S. Sadeghzadeh ³

1 - M. Sc in Agronomy, Jiroft Branch, Islamic Azad University, Jiroft, Iran
2 - Department of Agronomy and Plant Breeding, Arak Branch, Islamic Azad University, Arak, Iran
3 - Sugar Beet Seed Research Institute, Karaj, Iran

Received: 2015-11-28 Accepted : 2015-11-28 Published : 2012-02-20

Keywords: Planting date variety, yield Yield components, Sun flower,

Abstract :

       In order study the best planting date in the yeield and yield components of four varieties of sun flower, in the roodobthat is one of the suburbs belonging to bam in a personal and private farm in the agricultural year 87- 88. The experiment was performed using split plot arranged complete randomized block design with two dactors of planting date including    (T1 = 87/12/15) (T2 =87/12/28) (T3 =88/1/15) and uriaty (azargole, record, zarya and mehr). That was repeated for three times. The distance of rows was concider as 50  centimeters and the distance of bushes was 25 centimeters for all plot and ouso the density of bush in hektar was considered as the amount of 80000 in a fixed way. The measured traits contained of the yield of seed, the weight of thousand seed. The height of plant, the number of seed in plate, head diameter, the number of leaf in plant, the diameter and thicleness of main stem, the yield and function of seed in a single bush, and the yield of seed in the unit of surface. The result and effect of planting date on all the measured traits except the head diameter got significant so that the yield of seed in the first planting date.With the omount of 4444 kilogram/ hektar got the most yield and function of seed and the third planting date because of confronting with high temprature and as a result the hollownessof seed with the weight of 4132 kilogram/ hektar got the least yield of seed.The effect of variety on all trouts wich are being studied except the weight of thousand seed and the number of lead in plant in the level of possibility I persent got significant.The variety of the hybrid in azargol with the yield of seed in the amount of 4610 kilogram/hektar had the best yield and function. The reciprocal effects between planting date and variety with the exceotion of weight of thousand seed was a significant statistics on all traits in the level of possibility. So that the careness combination of the third planting date and the variety of azargol had the best seed yield.The seed yield and function showed a positive correlation with the height of plant, the number of seed per head, head diameter, the main stem thickness and diameter, yield and function in a single bush, yield and function in m2 and on the other hand it showed a negative correlation with the weight of thousand seed.

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