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Nitrogen and Silicon Application Facts on Rice Growth Parameters at Alborz Mountain Range

Rice is the main staple food of around half of the world’s population. This experiment was carried out in split plot in basis of randomized complete block design with three replications at the north of Iran in 2012. Main plot was nitrogen rates including (0, 50, 100 and 150 kg/ha) applied as urea and sub plot was silicon rates (0, 300 and 600 kg/ha) applied as calcium silicate. Results showed that minimum number of panicle per m2, number of blank spikelet per panicle, grain yield and harvest index were obtained in control treatment. The maximum number of panicle per m2, number of spikelet per panicle, grain yield and harvest index were observed at N150. Number of blank spikelet was significantly decreased at Si600 compare to control treatment. Number of total and fertile tillers per hill, number of total spikelet per panicle and filled spikelet percentage were increased. Therefore, grain yield and agronomical parameters had shown increase in N150 and Si600.

Author(s): H. Jafari, S. Dastan, A.R. Nasiri, L. Valaei4, H.R. Eslamii

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