Possibility of double croppingof early ripeing Sunflower cultivars in the Barly feilds of Miyaneh region

Subject Areas :

Rahim Alimohammadi ¹ (Faculty member of lsalamic Azad University of Miyaneh)
Koroush Siami ² (M.Sc. Student of Agronomy in Islamic Azad University of Karaj)

Received: 2005-02-05 Accepted : 2005-05-02 Published : 2005-06-21

Keywords:

Abstract :

This  study  was conducted   for investigation   of the effect of three between  plant   20, 25 and 30  cm on 60  cm  fixed   rows  and  early  ripeing    three  cultivars  Zaria,Azargol    and  Chemianca     on  different  triat including yield  and yield   components in Sunflower  after Barty  harvasting    in Miyaneh   region   during 2003. A fectorial   experiment    with randomized    complet   block design   and  3  replication     was  used.  In  this study some  of  vegitative    and   reproductive     stages,  morphologyeal     charactristics,     dry  wieght  various   organs, yield    and  yield   components    and  harvest   index  was  evaluated.    On  the  obtained    results,    there  was  no significant    difTerencc    between    plant  densities      in   phenologycal     stages,yicld     components      and   must   of evaluated   traits  except  I 00 grain weight   and grain  yield.   Also   there was no  significant    difference  between planted cultivars the must  evaluated   triats  except shrub length  and husk  to seed portion.ln    this  experiment diffrcnce   of interaction    of density    and cultivars   with   studied   trait  wasn't   significant    except   dry wight to second  sampling.The    must  dry wieght   was obtained  in the 83000   plant/ha    tretment  with Zaria and the 55000 plant/ha tretrnent   whit  Chemianca    was the least  dry wieght.   Finaly, considering    with experimented conditions   in this study the density   of 63000 plant/ha with Azargol   for double   cropping of sunflower    is suitable for Miyaneh region.

References:

1. Ahmad.Q.,  M.A.  Rana. and S. U. H. Siddiqui.  1991. Sunflower seed yield as influenced  by some agronomic and seed characters.Euphytica.56:   137-142.

2. Anderson, W. K. 1975. Maturation  of sunflower. Aust. J. Exp. Agric. Husb.15:  833-838.

3.  Graybill,  J. S., W. J. Cox. and D. J. Otis.  1991. Yield and quality of forage maize as influenced  by hybrid,

 

planting date and plant density. Agron. J. 83: 559-564.

4.  Gubbels,  G.  H.,  and  W.  Dedio.  1989. Effect  of plant  density  and  seeding  date  on  early  late  maturing sunflower hybrids.Can.  J. Plant  Sci. 69: 1251-1254.

5.  Gubbels,  G. H., and W. Dedio.1990.  Response  of early maturity  sunflower hybrids to row spacing and plant

 

density. Can. J. Plant Sci. 70: 1169-1171.

6. Majid,  H. R.  and  A. A.  Schneiter.1987.   Yield  and  quality  of  semi-dwarf  and  standard  height  sunflower hybrids grown at five plant populations.  Agron. J. 79: 681-684.

7. Zaffaroni.  E.,  and A. A. Schneiter. 1991. Sunflower production  as influenced  by plant type, plant population

and row arrangement.  Agron. J. 83: 113-118.