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DETERMINATION OF THE OPTIMUM DOSAGE OF N FERTILIZATION IN ACHIEVE OPTIMIZATION OF PERCENTAGE OF HYBRID RICE GRAIN CONTENTS
Risqa Naila Khusna Syarifah (a), Purwanto (a), Zulfa Ulinnuha (b)

(a) Laboratory of Agronomy and Holticulture, Faculty of Agriculture, Universitas Jenderal Soedirman
risqanaila[at]unsoed.ac.id
(b) Laboratory of Plant Breeding and Biotechnology, Faculty of Agriculture, Universitas Jenderal Soedirman


Abstract

Hybrid rice has begun to be developed by researchers to support the increase in national rice production because of its nature which can produce higher production than inbred rice. However, in Indonesia, the increase in hybrid rice yields has not met expectations, one of which is due to the lack of careful application of cultivation techniques, including fertilization techniques. This research was conducted to determine the optimum dose of nitrogen fertilization in hybrid rice, which can support the acquisition of the highest percentage of grain content. This research was used a Completely Randomized Block Design with two factors and three repetitions. The first factor was the dose of N fertilizer (0 kg N/ha, 100 kg N/ha and 200 kg N/ha), the second factor was hybrid rice varieties (Mapan-P05, Intani 602 and SL8SHS-Sterling). The variables observed included growth characteristics and yield components of hybrid rice (percentage of grain content). The research data were analyzed by analysis of variance and polynomial regression. he results showed that the optimum dose of N fertilization for Mapan-P05, Intani 602 and SL8SHS-Sterling varieties were 98.79 kg N/ha (R2=0.805), 103.34 kg N/ha (R2=0.919) and 122.49 kg N/ha (R2=0.918).

Keywords: N fertilizer- Hybrid rice- Percentage of grain content

Topic: Emerging Technologies in Agricultural Production Systems

Plain Format | Corresponding Author (Risqa Naila Khusna Syarifah)

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