Biology and Life Sciences
Received: 13 May 2018 , Published: 19 May 2018
Views: 109 , Download: 55
|1||Rifnas L. M.|
|3||Iqbal Y. B.|
Usage of chemical fertilizers in rice cultivation becoming threatens to the ecosystems of the world. Bio-fertilizer is one of the alternative sources in the rice cultivation with less harm to the human and environment. An experiment was conducted at the Rice Research Station, Sammanthurai, Sri Lanka during ‘Yala’ 2017 to evaluate the possibility of replacing the chemical fertilizers with bio-fertilizers in the production of rice. Bio-fertilizer consisted of Azotobacter chrocooccum, Azospirillum bresilensis, Bacillus polimixa, Bacillus megaterium and other Bacillus spp. in a liquid base medium was used for this study. The experiment was laid out in Randomized Complete Block Design with five treatments and four replications. The treatments were T1 - No any fertilizers (Control), T2 – 100% chemical fertilizer, T3 – 50% chemical + 50% bio-fertilizers, T4 – 50% bio-fertilizer, T5 – 100% bio-fertilizer. Rice cultivar ‘Bg 250' seedlings were transplanted in plastic pots at 12 days old. Bio-fertilizer was prepared for application by mixing with cow dung and cow urine. Prepared bio-fertilizer was applied in the late evening and water was stagnated inside the plastic pots. Combine application of 50% chemical and 50% bio-fertilizer has given the highest values in panicle length (21cm), 1000 grain weight (25.2g), yield (2.5tha-1) and the highest amount of unfilled grains were obtained in the control treatment (29). Lowest values of panicle length, 1000 grain weight, yield was found in no fertilizer treatment (Control). The lowest amount of unfilled grains were found in where the treatment received 100% bio-fertilizer. Based on these results it was concluded that the combined application of 50% chemical and 50% bio-fertilizers has produced the better performances with regard to panicle length, 1000 grain weight and yield in the rice cultivar ‘Bg 250'. It could, therefore, be stated that bio-fertilizer in combination with chemical fertilizer could be used as an alternative way in the production of rice to boost the yield with reduced hazards to human health and environment.
Alam, S. and Seth, R. K., 2014. Comparative study on effect of chemical and bio-fertilizer on growth, development and yield production of paddy crop (Oryza sativa L.). International Journal of Science and Research. 3(9):411-414.
Badawi, T. A., 2004. Rice-based production systems for food security and poverty alleviation in the Near East and North Africa: new challenges and technological opportunities. Pp.12-13. Proceedings of FAO Rice Conference. Rome, Italy.
Barah, B. C. and Pandey, S., 2005. Rainfed rice production systems in Eastern India: An on farm diagnosis and policy alternatives. Indian Journal of Agricultural Economics. 60(1):110-136.
El-Khawas, M. A., 1990. Effect of Azotobacter chrooccocum and Azosprillum brasilience inoculation under graded levels of nitrogen growth and yield of wheat. Plant and Soil.69:61-67.
Gomaa, M. A., Radwan, F. I., Kandil, E. E. and Shawer, M. A. M., 2015. Impact of Micronutrients and Bio-Fertilization on Yield and Quality of Rice (Oryza sativa, L.). Middle East Journal. 4(4):919-924
Hamidi, A. I. D. I. N., Chaokan, R., Asgharzadeh, A. H. M. A. D., Dehghaoshoar, M., Ghalavand, A. and Malakouti, M. J., 2009. Effect of plant growth promoting rhizobacteria (PGPR) on phenology of late maturity maize (Zea mays L.) hybrids. Iranian Journal of Crop Sciences. 11(3):249-270.
Mukhopadhyay, M., Datta, J. K. and Garai, T. K., 2013. Steps toward alternative farming system in rice. European journal of agronomy. 51:18-24.
Pan, G., Zhou, P., Li, Z., Smith, P., Li, L., Qiu, D. and Chen, X., 2009. Combined inorganic/organic fertilization enhances N efficiency and increases rice productivity through organic carbon ccumulation in a rice paddy from the Tai Lake region, China. Agriculture, ecosystems and environment. 131(3):274-280
Radwan, F. I., El-Seoud, A. I. and El-Ham A. B., 2008. Response of two rice cultivars to blue green algae. A Mycorrhizal inoculation and mineral nitrogen fertilizer. Journal of Plant Science and Biotechnology. 2(1):29.34
Saba, N., Awan, I. U., Baloch, M. S., Shah, I. H., Nadim, M. A. and Qadir, J., 2013. Improving synthetic fertilizer use efficiency through bio-fertilizer application in rice. Gomal University Journal of Research. 29(2):33-38.
Saikia, S. P., Bora, D., Goswami, A., Mudoi, K. D. and Gogoi, A., 2012. A review on the role of Azospirillum in the yield improvement of non-leguminous crops. African Journal of Microbiology Research. 6(6):1085-1102.
Singh, R. K., Kumar, P., Prasad, B. and Singh, S. B., 2015. Effect of bio-fertilizers on growth, yield and economics of rice (Oryza sativa L.). International Research Journal of Agricultural Economics and Statistics. 6(2):386-391.
Wihardjaka and Abdurachman, 2007. Effects of long term fertilization on rainfed agriculture. Staple Production. 26 (3):199-205.
Wijebandara, D. M., Raine, D. I. Dasog, G. S., Patil, P. L. and Hebban, M., 2009. Response of rice to nutrients and bio-fertilizer under conventional and system on rice intensification methods of cultivation in Tungabhadra Command of Kamataka Department of soil Science and Agriculture, Chem., University, India. Journal of Agriculture and Soil. 22(4):741-753.
Yoseftebar, S., Fallah, A. and Daneshiyan, J., 2012. Comparing yield and yield components of hybrid rice (GRH1) at different applications of nitrogen fertilizer. International Journal of Biology. 4(3):60-65.
Yuvaraj, K., 2016. Effect of bio-fertilizers and inorganic fertilizers on soil health, growth and yield of rice (Oryza sativa L.) crop. Doctoral dissertation, Punjab Agricultural University Ludhiana