Efects of sowing date and seeding rate on yield and yield components of elites lines of barley.
2005
Saberi, Mohammad Hosein | Tagalli, Hamid
In addition to genotype, plant yield depende to management and enviroment candition. Planting date and seeding rate are the most important factors effective on plant yield. Our objective was determination of sowing date and seeding rate effect in three elite lines and one variety karoon * kavir of barley. The experiment was done as split plot factorial design base on randomized completely block design with three replications . the experiment was performed during two years from 2002-2004 growing season, using three sowing date including (D1= Oct.12 , D2=Nov.1 and D3= Nov.21) were as main plots and combinations of cultivars ( M-80-4 , M-80-7, M-80-15 and karoon * kavir) and seeding rate (300 , 450 and 600 kernels /m2 )as sub plots. the results show that density levels were significantly different only about plant number /m2 at %1 level and number of spike/m2 at %5 probability level Varieties were significantly different about all of traits with the exception of number of spike/m2 and harvest index. inspite of sowing date had no significicant effect on grain yield , but D2 with 3.75 ton/ha grain yield was better that the other. Cultivar karoon * kavir than elite lines ( M-80-7) with 3.46 and 3.22 ton/ha grain yield were better than the other . There was a positive significant correlation at o.o1 level between yield and grains/ear , ears/m2. length of ear, biological yield and harvest index. According to the results sowing date from Nov.1 To.Nov. 21 and cultivar karoon * kavir than elite line M-80-7 with 300 kernels/m2 recommended for region and region with same weather condition. Key word : sowing date-seeding rate - barley.
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