Advances in Agronomy, Vol. 27 by N.C. Brady (Ed.)

By N.C. Brady (Ed.)

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The liberated ammonia can damage germinating seedlings and young plants and can be lost through volatilization. Nitrification of ammonium may also result in undesirable effects (temporary accumulation of nitrites in toxic concentrations; N losses through leaching and denitrification of both nitrites and nitrates). Jackson and Burton (1962) have found that N losses following surface application of urea to grass sods in Georgia (USA) can be prevented by burning the soil surface. This effect of burning is attributed to heat inactivation of urease.

2 . Hydrolysis of a-Glucosides, Including Maltose Toluene-treated soil samples hydrolyze phenyl-a-D-glucoside (Hofmann and Hoffmann, 1953a) and maltose (Drobnik, 1955; Hofmann and Hoffmann, 1955). , 1972). 9 From J. P. Voets and M. Dedeken, Meded. Landbouwhogesch. Opzoekingssta. Slaat Gent 30, 2037-2049 (1965). 30 s. KISS, M. DRAGAN-BULARDA, AND D. RADULESCU 3. Hydrolysis of p-Glucosides, Zncluding Cellobiose Soils treated with toluene hydrolyze phenyl-p-D-glucoside, arbutin (Hofmann and Hoffmann, 1953a), cellobiose (Hoffmann, 1959), salicin (Hoffmann and Dedeken, 1965), and p-nitrophenyl p-D-glucoside (Hayano, 1973) .

SOC. Agron. and Crop Sci. SOC. , Madison, Wisconsin. Stewart, C. R. 1971. Plant Physiol. 48, 792-794. , Waldron, L. , and Ulrich, A. 1971. Planta 97, 281-289. Upchurch, R. , Peterson, M. , and Hagan, R. M. 1955. Plant Physiol. 30, 297-303. Wardlaw, I. F. 1967. Aust. J. Biol. Sci. 20, 25-39. Wardlaw, I. F. 1969. Aust. J. B i d . Sci. 22, 1-16. Wardlaw, I. F. 1971. Aust. J . Biol. Sci. 24, 1047-1055. Wright, N. , and Jordan, G. L. 1970. Crop Sci. 10, 99-102. Yoshida, S . 1972. Annu. Rev. Plant Physiol.

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