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Agricultural Science Digest, volume 28 issue 4 (december 2008) : 274 - 276

PHYSIOLOGICAL AND AGRONOMIC EFFICIENCY OF NITROGEN IN RICE AS INFLUENCED BY SOURCES OF NITROGEN AND CROP ESTABLISHMENT TECHNIQUES

H.M. Jayadeva, T.K. Prabhakara Setty, R.C. Gowda, M.T. Sanjay

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¹Agricultural Research Station, Kathalagere, University of Agricultural Sciences, Bangalore - 560 065, India

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Cite article:- Jayadeva H.M., Setty Prabhakara T.K., Gowda R.C., Sanjay M.T. (2025). PHYSIOLOGICAL AND AGRONOMIC EFFICIENCY OF NITROGEN IN RICE AS INFLUENCED BY SOURCES OF NITROGEN AND CROP ESTABLISHMENT TECHNIQUES. Agricultural Science Digest. 28(4): 274 - 276. doi: .

ABSTRACT

The field experiments were carried out during kharif, 2005 and summer, 2006 to know the physiological and agronomic efficiency of nitrogen in rice as influenced by sources of nitrogen and crop establishment techniques. The SRI establishment technique recorded significantly higher physiological efficiency (53.36, 54.18 and 53.77 kg grain kg−1 N uptake) and agronomic efficiency (67.07, 55.47 and 61.27 kg grain kg−1 N) of nitrogen in kharif, summer and pooled analysis, respectively. Among the sources of nitrogen, application of large sized urea granules recorded higher physiological efficiency (52.83, 53.25 and 52.99 kg grain kg−1 N uptake) and agronomic efficiency (60.53, 48.27 and 54.40 kg grain kg−1 N) of nitrogen in kharif, summer and pooled analysis, respectively

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REFERENCES

Deebakaran, G. and Ramasamy. (1999). Madras Agril. J., 86(7-9): 429-431.
De Datta, S.K. (1995). Fertilizer Res., 42:193-203.
Novoa, R. and Loomis, R.S. (1981). Plant and Soil, 58: 177-204.
Sundararaj, N. et al. (1972). Design and Analysis of Field Experiments. (Ed.). UAS, Pubn., Bangalore, India.
Velu, V. and Ramanathan, K.M. (1994). Madras Agricl. J., 81(11): 605-609.
Yoshida, A. S. (1981). Fundamental of Rice Crop Science. International Rice Research Institute, Los Banos, Philippines, p. 269

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PHYSIOLOGICAL AND AGRONOMIC EFFICIENCY OF NITROGEN IN RICE AS INFLUENCED BY SOURCES OF NITROGEN AND CROP ESTABLISHMENT TECHNIQUES

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