Effect of Seed Rate on Grain Yield and Yield Components of Rice (cv. Hashemi) in Direct Seeding Methods | ||
| به زراعی نهال و بذر | ||
| Article 3, Volume 31, Issue 1, May 2015, Pages 37-56 PDF (199.88 K) | ||
| DOI: 10.22092/sppj.2017.110565 | ||
| Authors | ||
| N. Gholami Rezvani; Masoud Esfahani* ; Sh. Kaabi Rahnama; A. Aalimi; M. Nahvi | ||
| Abstract | ||
| The effect of seed rate on grain yield and yield components of rice (cv. Hashemi) in direct seeding methods was evaluated in a split plot lay out based on randomized complete block design with three replication and three seeding methods as main plots and three seeding rates (60, 80 and 100 kgha-1) as sub plots at Rice Research Institute of Iran, Rasht in 2010 and 2011. Seeding methods consisted of drum direct seeding, hill wet seeding, broadcasting and pre-geminated seeding in puddle field. Results indicated that, the maximum plant height (131.0 cm), number of productive panicles (235 panicles m-2 ), grain yield (2753 kgha-1), Sink strength index (132.2 cm), yield formation rate (29.7 kg day-1), milling recovery (68.0%) and head rice (59.0%) were obtained in hill wet seeding method. The maximum number of productive panicles (243 panicles m-2), grain yield (2486 kgha-1), and yield formation rate (26.5 kg day-1) were obtained in in 100 kgha-1. As the results indicate, it seems that, it is possible to obtain an acceptable grain yield in Hashemi rice cultivar using direct seeding with hill wet direct seeding method in puddle field and seeding rate 100 kgha-1 in climatic continental of the experimental region. | ||
| Keywords | ||
| rice; direct seeding; yield formation rate; sink strength index; milling recovery | ||
| References | ||
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