مطالعه امکان کشت دوم ارقام زودرس آفتابگردان در زمین های زیر کشت جو در منطقه میانه
محورهای موضوعی : بوم شناسی گیاهان زراعیرحیم علیمحمدی 1 , کوروش صیامی 2
1 - عضو هیات علمی دانشگاه آزاد اسلامی واحد میانه
2 - دانشجوی کارشناسی ارشد زراعت دانشگاه آزاد اسلامی واحد کرج
کلید واژه:
چکیده مقاله :
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.
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.
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