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Gopalakrishnan, S and Watanabe, T and Pearse, S J and Ito, O and Hossain, Z A K M and Subbarao, G V (2009) Biological nitrification inhibition by Brachiaria humidicola roots varies with soil type and inhibits nitrifying bacteria, but not other major soil microorganisms. Soil Science and Plant Nutrition, 55 (5). pp. 725-733.
Hossain, Z A K M and et al, . (2008) Detection, isolation and characterization of a root-exuded compound, methyl 3-(4-hydroxyphenyl) propionate, responsible for biological nitrification inhibition by sorghum (Sorghum bicolor). New Phytologist, 180 (2). pp. 442-451. ISSN 1469-8137
Subbarao, G V and et al, . (2007) Can biological nitrification inhibition (BNI) genes from perennial Leymus racemosus (Triticeae) combat nitrification in wheat farming? Plant and Soil, 299 (1-2). pp. 55-64. ISSN 1573-5036
Krishnamurthy, L and Ito, O and Johansen, C and Saxena, N P (1998) Length to weight ratio of chickpea roots under progressively receding soil moisture conditions in a Vertisol. Field Crops Research, 58 (3). pp. 177-185.
Katayama, K and Ito, O and Rao, T P (1998) Seedling characteristics and retention of current photosynthates in leaves in relation to initial growth in pigeonpea (Cajanus cajan L. Millsp.) and cowpea (Vigna sinensis Endl.). Soil Science and Plant Nutrition, 44 (3). pp. 477-480. ISSN 0038-0768
Devi, G and Ito, O and Matsunaga, R and Tobita, S and Rao, T P and VidyaLakshmi, N and Lee, K K (1996) Simulating Root System Development of Short-duration Pigeonpea. Experimental Agriculture, 32 (1). pp. 67-68. ISSN 1469-4441
Tobita, S and Ito, O and Matsunaga, R and Rao, T P and Rego, T J and Johansen, C and Yoneyama, T (1994) Field evaluation of nitrogen fixation and use of nitrogen fertilizer by sorghum/pigeonpea intercropping on an Alfisol in the Indian semi-arid tropics. Biology and Fertility of Soils, 17 (4). pp. 241-248. ISSN 0178-2762
Matsunaga, R and Ito, O and Tobita, S and Rao, T P and Johansen, C (1994) Response of short-duration pigeonpea to nitrogen application after short-term waterlogging on a Vertisol. Field Crops Research, 38 (3). pp. 167-174. ISSN 0378-4290
Rao, T P and Ito, O and Matsunaga, R (1993) Differences in uptake kinetics of ammonium and nitrate in legumes and cereals. Plant and Soil, 154 (1). pp. 67-72. ISSN 0032-079X
Subbarao, G V and Hossain, Z A K M and Nakahara, K and Ishikawa, T and Yanbuaban, M and Yoshihashi, T and Ono, H and Mitsuru, Y and Hash, C T and Upadhyaya, H D and Srinivasa, P and Reddy, B V S and Ito, O and Sahrawat, K L (2009) Biological Nitrification Inhibition (BNI) Potential in Sorghum. In: The Proceedings of the International Plant Nutrition Colloquium XVI, Department of Plant Sciences, UC Davis, 2009, UC Davis,California,United States.
Gopalakrishnan, S and Watanabe, T and Ito, O and Subbarao, G (2007) Root exudates of Brachiaria humidicola, a tropical pasture grass, and its effect on nitrification and soil microorganisms. In: “Rhizosphere 2” conference, 26-31 Aug 2007, Montpellier, France.
Gopalakrishnan, S and Subbarao, G V and Nakahara, K and Ito, O (2006) Nitrification Inhibition (NI) compounds from Brachiaria humidicola, a tropical grass. In: 30th International Symposium on High performance Liquid Phase Separations and Related Techniques(HPLC 2006), 17-23 June 2006, San Francisco, USA.
Ito, O and Tobita, S and Matsunaga, R and Rao, T P and Johansen, C (1992) Inorganic Nitrogen In Soil Water Collected From Soil Under Intercrop Components Sorghum And Pigeonpea - A Pot Experiment. In: Proceedings of the International Symposium, 1992, Ludhiana, India.
Matsunaga, R and Ito, O and Tobita, S and Rao, T P (1992) Response Of The Pigeonpea (Cajanus Cajan (L.) Millspaugh) To Nitrogen Application And Temporary Waterlogging. In: Root Ecology and its Practical Application proceedings of the 3d ISRR-symposium, 2nd - 6th September 1991, Wien, Austria.
Ito, O and Matsunaga, R and Tobita, S and Tao, T P (1992) Rooting Behavior Of Intercropped Pigeonpea (Cajanus Cajan (L.) Millspaugh) And Sorghum (Sorghum Bicolor (L.) Moench). In: Root Ecology and its Practical Application proceedings of the 3d ISRR-symposium, 2nd - 6th September 1991, Wien, Austria.