KEMAMPUAN Azetobacter sp. DALAM MENINGKATKAN EFISIENSI PEMUPUKAN UREA PADA TANAMAN JAGUNG (Zea mays L.)
Abstract
Azotobacter sp. is a non-symbiotic bacteria that has the ability to mobilize nitrogen from a form that is not available in a form that is available for plants. Inoculation of Azotobacter sp. into the planting medium can be used as a supplier of nitrogen required by the plant. Utilization of Azotobacter sp. as biofertilizer has the ability to minimize the use of chemical fertilizers, improve the soil fertility and increase the microbial activity in the rhizosphere of plants. Inoculation of Azotobacter sp. into the planting medium is one alternative to improve the efficiency of urea fertilizer in the maize cultivation. The result of this research showed that the application of Azotobacter sp. with the dose of 10 ml l-1 and 20 ml l-1 on the urea fertilization with the dose of 150 kg ha-1 were able to increase the growth of maize, so that maize has growth that was not significantly different with the maize that got urea with the dose of 225 kg ha-1 and 300 kg ha-1. Inoculation of Azotobacter sp. in the planting media, either with the dose of 10 ml l-1or 20 ml l-1were able to increase the maize yield when compared to the treatment without Azotobacter sp. Inoculation of Azotobacter sp. into the planting medium was able to increase the maize yield. However, increasing the dose of Azotobacter sp. more than 10 ml l-1 did not affect to increase the maize yield. Maize yield reached the optimum value when the dose of urea supplied was153.50 kg ha-1.
Keywords
Full Text:
PDFReferences
Baral, B. R. and P. Adhikari. 2013. Effect of Azotobacter on Growth and Yield of Maize. J. Agric. 11 (2) : 141 – 147
Buana, A. T., D. E. Munandar dan H. B. Setyawan. 2013. Pengaruh Dosis Pupuk Nitrogen dan Intensitas Sinar Matahari terhadap Pertumbuhan dan Hasil Jagung (Zea mays L.) Varietas Lokal Tuban. J. Ilmiah Pertanian. 1 (1) : 1 – 10
Bustami, Sufardi dan Bakhtiar. 2012. Serapan Hara dan Efisiensi Phosfat serta Pertumbuhan Padi Varietas Lokal. J. Manajemen Sumberdaya Lahan. 1 (2) : 159 – 170
Danapriatna, N. 2010. Biokimia Penambatan Nitrogen oleh Bakteri Non Simbiotik. J. Agribisnis & Pengembangan Wilayah. 1 (2) : 1 – 10
Hindersah, R., D. A. Sulaksana dan D. Herdiyantoro. 2014. Perubahan Kadar N Tersedia dan Populasi Azotobacter sp. di Rizosfer Sorgum (Sorghum bicolor L.) yang Ditanam pada Dua Ordo Tanah dengan Inokulasi Azotobacter sp. J. Agrologia. 3 (1) : 10 – 17
Rao, N. S. S. 2010. Mikroorganisme Tanah dan Pertumbuhan Tanaman. UI-Press. p. 100 – 124
Razie, F. dan I. Anas. 2005. Potensi Azotobacter spp. (dari Lahan Pasang Surut Kalimantan Selatan) dalam Menghasilkan Indole Acetic Acid (IAA). J. Tanah dan Lingkungan 7 : 35 – 39
Rosmarkam, A. dan N. W. Yuwono. 2002. Ilmu Kesuburan Tanah. Kanisius. Yogyakarta. p. 95 – 186
Sitompul, S. M. dan B. Gurito. 1995. Analisis Pertumbuhan Tanaman. Gadjah Mada University Press. Yogyakarta. p. 152 – 217
Syam’un, E., Kaimuddin dan A. Dachlan. 2012. Pertumbuhan Vegetatif dan Serapan Nitrogen Tanaman yang Diaplikasikan Pupuk Nitrogen Anorganik dan Mikroba Penambat Nitrogen Non-Simbiotik. J. Agrivigor. 11 (2) : 251 – 261
Usharani, G., D. Sujitha and S. Sivasakthi. 2014. Effect of Azotobacter sp. for the Improvement of Growth and Yield of Pearl Millet (Cumbu) (Pennisetum Glaucum L.). Int. J. of Adv. Multi. Res. 1 (1) : 102 – 106
Widiyawati, I., Sugiyanta, A. Junaedi dan R. Widyastuti. 2014. Peran Bakteri Penambat Nitrogen untuk Mengurangi Dosis Pupuk Nirtogen Anorganik pada Padi Sawah. J. Agron. Indonesia 42 (2) : 96 – 102
Refbacks
- There are currently no refbacks.
