In order to evaluate of effects, the nitrogen and potash fertilizer on yield, yield components and remobilization on number 4 rice promising line. The study was conducted using a factorial experiment arranged in completely randomized
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In order to evaluate of effects, the nitrogen and potash fertilizer on yield, yield components and remobilization on number 4 rice promising line. The study was conducted using a factorial experiment arranged in completely randomized design with three replications at the Rice Research Institute of Iran in 2012. The factors were nitrogen with 3 levels (60, 90 and 120 Kg.h-1) from Urea fertilizer’s resource and Potash fertilizer with 3 levels (0, 50 and 100Kg.h-1) from the sulfate potash resource. Analysis of variance showed that the Nitrogen Factor was significant on all the considered traits at 1 probability levels. The Potash Factor was significant on the grain 1000 weight at 1 probability level. The interaction effect of Nitrogen in Potash on traits the number of filled grain and the grain 1000 weight were showed significant difference at 5 probability levels. The highest of treats seed yield (7818 kg.h-1), the percentage of panicle reproduction (88.47%), grain 1000 weight (30.08g), the number of seed filled (149.4), height plant (110.6 cm) and for remobilization of dry matter (1198g.m-2) were obtained 120 kg. ha-1. Mean comparison effects of Nitrogen in Potash interactive showed that for grain yield of a 120 kg nitrogen per 50kg Potash with the average of 7994 kg h-1 was consider a higher class. Finally, for the number 4 promising line of rice can use a level of fertilizer which includes 120 kg pure Nitrogen (260 kg urea fertilizer) and 50 kg Potash (100 kg super triple phosphate fertilizer) per a hectare.
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