Abstract
In order to study the effects of fall planting dates on yield and yield components of six cumin (Cuminum cyminum L.) ecotypes an experiment was arranged in a randomized complete block design as a split-plot with three replications during 2007-08 growing season at the Agricultural Research Station of Ferdowsi University of Mashhad. Three planting dates (18 Oct. (first), 8 Nov. (second) and 29 Dec. (third)) and six cumin ecotypes (Torbat heydarieh, Khaf, Sabzevar, Ghaen, Ghoochan and RZ19) were allocated to main and sub plots, respectively. Results showed that the effects of planting dates, ecotypes and interaction effects of planting dates and cumin ecotypes were significant for yield components (winter survival percentage, number of umbel per plant, number of seeds per umbel and 1000-seed weight) and seed yield and biological yield. There was a reduction on yield components (number of umbel per plant, number of seeds per umbel and 1000-seed weight), seed yield and biological yield due to delay planting date from 18 Oct. to 29 Dec. The highest winter survival percentage was achieved on the third planting date. The highest and lowest amount for all of the traits, were achieved in Ghaen and RZ19 ecotypes, respectively. According to the useful results and for the deployment of cumin fall planting in other locations of province, continuation of this study to recommended.
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