THE RATIO OF N/K AND GRAIN YIELD OF LOWLAND RICE (Oryza sativa L.) AS AFFECTED BY DIFFERENT LEVELS OF NITROGEN APPLICATION AND IRRIGATION METHODS
DOI:
https://doi.org/10.23960/ja.v18i2.4294
Abstract View: 261
Abstract
Lowland rice (Oryza sativa L.) still significantly contributes to Indonesian food security. Water shortage and the availability of N fertilizers frequently become major constraints in rice production, so efficient use of N fertilizers and water-saving irrigation are more preferable. The objective of the experiment was to evaluate the ratio of N/K and seed yield of lowland rice under different levels of nitrogen application and irrigation methods. The experiment was conducted in Gadingrejo-Pringsewu in 2011. The treatments were arranged in factorials with Split-Plot in Randomized Complete Block Design with three replications. Irrigation methods as main plots consisted of two levels, namely, conventional irrigation method (continous standing-water with 5 cm in depth) and irrigation method without flooding (continous saturated soil). Sub-plot was N fertilization consisting of four levels, that is, 150, 200, 250 and 300 kg Urea/ha. Lowland rice cv. Ciherang was planted in experimental plots of 4x5 m in size with row spacing of 25x25 cm. The result of the experiment indicated the ratio of N/K in rice leaves at 40 and 60 DAP, and at harvest time was not significantly affected by irrigation methods and N fertilization levels. The performance of yield components and rice production in conventional irrigation method and irrigation without flooding did not a significant diference although irrigation without flooding consumed less water. This means that irrigation without flooding could increase water use efficiency in lowland rice production.
Key words: grain yield, lowland rice, ratio of N/K, yield components
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References
Abbasi, M.K., M.M. Tahir, A. Sadiq, M. Iqbal and M. Zafar. 2012. Yield and nutrient use efficiency of Rainfed Maize response to splitting and nitrogen rates in Kashmir, Pakistan. Agronomy J. 104(2):448—457.
Chen, G., S. Guo and H.J. Krouzuker. 2013. Nitrogen use efficiency (NUE) in rice links to NH4+ toxicity and futile NH4+ cycling in roots. Plant Soil. Springerlink.com.
Epstein, E. and A.J. Bloom. 2005. Mineral Nutrition of Plants: Principles and Prespectives. Second Ed. Sinauer Associates Inc., Sunderland, Massachusetts. Fageria, N.K., V.C.
Baligar and R.B. Clark. 2003. Physiology of Crop Production. Food Products Press Inc., New York.
Gething, P.A. 1993. Improving Returns from Nitrogen Fertilizer: The Potassium-Nitrogen Partnership. IPI Research Topics No.13 (2nd revised edition) International Potash Inst., Switzerland.
Ishii, R. 1995. Roles of photosynthesis and respirtion in the yield-determining process. In T. Matsuo, K.Kumazawa, R.Ishii, K.Ishihara and H. Hirata (Eds). Science of the Rice Plants. Vol. 2. Food and Agric.Plic.Res. Center, Tokyo. p.691-696.
Jones, Jr J.B. 2003. Agronomic Hand Book Management of Crops, Soils and Their Fertility. CRC Press., New York.
Kamal, M dan M.S. Hadi. 2010. Respon serapan N, P, K dan hasil padi sawah (Oryza sativa L.) terhadap aplikasi bahan humik dan sistim pengairan berbeda. Makalah disampaika pada Seminar Nasional MIPA, Bandar Lampung.
Kamal, M., M.S. Hadi, D. Purnomo dan A. N. Syamsi. 2013. Kajian akumulasi bahan kering dan komponen hasil padi sawah (Oryza sativa L.) pada metode pengairan dan dosis pemupukan kalium (K) berbeda. Pros. Sem.Nas. Sains dan Teknologi, Lembaga Penelitian Universitas Lampung.
Kavitha, M.P. and R. Balasubramanian. 2006. Maximizing hybrid rice productivity through nitrogen and potassium. Madras Agric. J. 93(1-6):60-62.
Lopez-Belindo, L., R.J. Lopez-Belindo and F.J. Lopez-Belindo. 2006.Fertilizer nitrogen efficiency in durum wheat under rainfed Mediteranean condition. Effect of split application. Agron J. 98:55-62.
Matsushima, S. 1995. Physiology of High-Yielding Rice Plants from the View Point Yield Components. . p.737-766.in T. Matsuo, K.Kumazawa, R.Ishii, K.Ishihara and H. Hirata (Eds). Science of the Rice Plants. Vol. 2. Food and Agric.Plic.Res.Center, Tokyo.
Mengel, K. and E.A. Kirby. 1987. Principles of Plant Nutrition. Internantional Potash Institute Publ., Switzerland.
Mohyudin, J. and M. Tarique. 2010. Evaluation of irrigation application methods for rice production. Sarhad J. Agric. 29(4):577-582.
Setiawan, K and M. Kamal. 2008. The content of N, P, K and Mg at vegetative stage and its relation to growth and seed yield of upland rice. Jurnal Ilmiah Pertanian Gakuryoku Vol. XIV(2):55-59.
Suswono. 2012. Kebijakan kementrian pertanian dalam penyediaan lahan dan teknologi untuk mendukung terwujudnya kedaulatan pangan. Pros. Sem. Bersama Peragi-Perhorti-PeripiHigi. Mendukung Kedaulatan Pangan dan Energi yang Berkelanjutan. Departemen Agronomi dan Hortikultura Fakultas Pertanian Institut Pertanian Bogor, Bogor, 1-2 Mei 2012.
Tabbal, D.F., B.A.M. Bouman, S.I. Buiyan, E.B. Sibayan and M.A. Sattar. 2002. On-farm strategies for reducing water input in irrigated rice; case studies in the Philippines. Agric. Water Management 56:93-112.
Taiz, L. and E. Zeiger. 2010. Plant Physiology. Fifth Edition. Sinauer Associates Inc., Publ., Sunderland, Massachusetts, USA.
Yoshida, S. 1981. Fundamentals of Rice Science. International Rice Research Institute, Los Banos, Philippines.
