References
- Andrews , R.K. , Blakeley , R.L. and Zerner , B. 1984 . “ Urea and urease ” . In Advances in Inorganic Biochemistry, Volume 6 , Edited by: Eichhorngl and Marzilli , L.G. 245 – 283 . New York, NY : Elsevier .
- Chen , Y. and Ching , T.M. 1988 . Induction of barley leaf urease . Plant Physiol. , 86 : 941 – 945 .
- Eibner , R. 1985 . “ Foliar fertilization‐importance and prospects in crop production ” . In The First International Symposium on Foliar Fertilization , Edited by: Alexander , A. 3 – 13 . Boston, MA : Martinus Nijhoff .
- Finney , K.F. , Mayer , J.W. , Smith , F.W. and Frayer , N.C. 1957 . Effect of foliar spray of Pawnee wheat with urea solutions on yield, protein content and protein quality . Agron. J. , 49 : 341 – 347 .
- Fox , R.H. , Kern , J.M. and Piekielek , W.P. 1986 . Nitrogen fertilizer source, and method and time of application effects on no‐till corn yields and nitrogen uptake . Agron. J. , 78 : 741 – 746 .
- Hsu , N.H. 1986 . “ The absorption and distribution of metabolites from foliar fertilization ” . In Foliar Feeding of Plant with Amino Acid Chelates , Edited by: Ashmead , N.D. , Miller , G.W. and Nsu , N.H. 236 – 254 . Park Ridge, IL : Noyes Publications .
- Kumar , P.A. , Nair , T.V.R. and Abrol , Y.P . 1983 . Effect of exogenous supply of amino acids, amides, urea and ureides on free NH4+ level in mungbeans . Experientia. , 39 : 1302 – 1303 .
- Kumar , P.A. and Abrol , Y.P. 1990 . “ Ammonia assimilation and reassimilation in higher plants ” . In Nitrogen in Higher Plants , Edited by: Abrol , Y. P. 159 – 179 . Taunton : Research Studies Press .
- Miller , M. 1985 . “ The effect of foliar fertilization on the yield and quality of different crops ” . In The First International Symposium on Foliar Fertilization , Edited by: Alexander , A. 434 – 452 . Boston, MA : Martinus Nijhoff .
- Novozamsky , I. , Vaneck , T. , Van Schouwenburg , Ch and Wallinger , L. 1974 . Total nitrogen determination in plant material by means of indophenol blue method . Netherlands J. Agric. Sci. , 22 : 3 – 5 .
- Solomonson , L.P. and Barber , M.J. 1990 . Assimilatory nitrate reductase: Functional properties regulation . Annu. Rev. Plant Mol. Biol. , 41 : 225 – 253 .
- Turley , R.H. and Ching , T.M. 1986a . Storage protein accumulation in ‘Scio’ barley seed as affected by later foliar applications of nitrogen . Crop Sci. , 26 : 778 – 782 .
- Turley , R.H. and Ching , T.M. 1986b . Physiological responses of barley leaves to foliar applied urea‐ammonium nitrate . Crop Sci. , 26 : 987 – 993 .
- Division of Plant Physiology, Indian Agricultural Research Institute, New Delhi 110012, India
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