Silicon and potassium application facts on lodging related characteristicm and quantity yield in rice (Oryza sativa L.) Tarom Hashemi variety

Subject Areas : New Finding in Agriculture

Morteza Sam-Daliri ¹ , Hamid reza Mobasser ² , Salman Dastan ³ , Arash Ghasemi Mianaie ⁴

1 - دانشگاه آزاد اسلامی، واحد چالوس، گروه زراعت، چالوس، ایران.
2 - دانشگاه آزاد اسلامی، واحد قائم‌شهر، گروه زراعت، قائم‌شهر، ایران.
3 - دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه زراعت، تهران، ایران.
4 - دانشگاه آزاد اسلامی، واحد علوم و تحقیقات، گروه زراعت، تهران، ایران.

Received: 2015-12-02 Accepted : 2015-12-02 Published : 2010-04-21

Keywords: Grain yield, Rice, Potassium, Bending moment, silicon,

Abstract :

     In order to investigate Silicon and potassium application facts on lodging related characteristics and quantity yield in rice (Oryza sativa L.) Tarom Hashemi variety, an experiment was carried out at split-plot in randomized complete block design with four replications at Mazandaran province in 2010. Main factor was silicon rates in four levels including 0, 250, 500 and 750 kg Si/ha and subfactor was potassium rates in four levels including 0, 30, 60 and 90 kg K/ha. Results showed that the all of traits except panicle length, fourth internode length, fourth internode bending moment and harvest index significantly (p                         0.01; p 0.05) at the silicon rates. Also stem length, plant height, fourth internode length, fourth internode bending moment, fertile tiller number, grain yield and harvest index significantly (p 0.01; p 0.05) at the potassium rates. None of the investigated traits, not significantly (p 0.01; p 0.05) at silicon rates × potassium rates. The maximum of grain yield (612 g/m2) obtained on 750 kg Si/ha, because most of the tiller number per hill and fertile tiller number due this treatment. The least of the fourth internode bending moment obtained in 90 kg K/ha. Most of the fertile tiller number, grain yield (575.3 g/m2) and harvest index (35.6 %) was produced in 90 kg K/ha.Grain yield had been positive correlation with total tiller number per hill and fertile tiller number. Harvest index had been positive correlation with flag leaf length, fertile tiller number and grain yield. Therefore, 750 kg Si/ha and 90 kg K/ha due to as most of yield components, grain yield and harvest index introduced the best of treatment.

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