Studying the effect of Nitroxin biofertilizer and Nitrogen on yield and yield components of Rapeseed ( Brassica napus L. )

Subject Areas : crop production

سيّدمرتضي عظيم زاده ¹

1 - گروه زراعت- كشاورزي واحد شيروان، دانشگاه آزاد اسلامي، شيروان – ايران

Received: 2014-08-30 Accepted : 2015-01-15 Published : 2014-07-17

Keywords: biofertilizer – chemical fertilizer – rapeseed – seen yield,

Abstract :

To investigate the effect of Nitroxin biofertilizer and Nitrogen chemical fertilizer on yield and yield components of two varieties of rapeseed, an experiment was carried out in the research field of IAU in Shirvan branch in the farming season 2012-3. Two levels of nitroxin biofertilizer and five levels of nitrogen fertilizer from the Urea source were used in it. The varieties were Octanz and Tassilo. The experiment was split split plot based on randomized complete block design with three replications. During the growing season and after harvesting, some special traits were recorded. The results showed that seed yield of Tassilo was significantly higher than Octanz at the rate of %6.6. This yield difference was because of %24 increment of silique amount in Tassilo. The consumption of 200 kg urea fertilizer increased seed and biological yield by %12.7 and %12 respectively in comparison with the control. The use of 2 litre/h Nitrogen also increased seed and biological yield around %4. Increasing the use of urea fertilizer added to the nitrogen biofertilizer impact on seed yield. Using nitroxin biofertilizer accompanied with 100, 150, and 200 kg/h Urea chemical fertilizer, increased seed yield 3,5 and %7.4 respectively. The variety of Octanz showed better reaction to nitroxin biofertilizer. Therefore, the variety of Tassilo is preferred to Octanz because of its equal seed yield and less Urea fertilizer without nitroxin biofertilizer consumption.

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