Investigation Of Different Sowing And Harvesting Dates Effect On Yield And Quality Of Monogram Sugar Beet Seed
2007
Alizadeh Benab,G., Msc of Agronomy, Faculty of Agriculture, Mohaghegh-Ardabili University., | Tobeh, A., Assistant of Agriculture, Faculty of Mohaghegh-Ardabili University. | Ghassemi Golezani, K., Department of Agronomy and Plant Breeding, Faculty of Agriculture, Tabriz University. | Sadegzadeh Hemayati, S., Seed and Plant Improvement Institute, Karaj, Iran.
In order to evaluation of different sowing and harvesting dates effect on yield and quality of monogerm sugar beet seeds, an experiment was conducted in the form of split plot based on completely randomized block design with four replications in Ardabil Agriculture Reaserch Station in 2003. Four sowing dates(10 and 25 of March, 9 and 24 of April) were located in main plots and harvesting dates including 15, 30, 45 and 60 days after 50% flowering were located in sub-plots.The experiment results showed that germination percent, normal seedlings percent, seed effective filling period and seed filling rate were affected significantly(p0.05) by sowing date. In this study, all of the traits were affected significantly by the harvesting date. According to the results, seed effective filling period decreased significantly with delayed sowing and early harvesting. Saleable seed yield and shattering rate was increased above 2th harvest (30 days after flowering).There was significant positive relationship (r
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