Journal article

Effects of application of nitrogen fertilizer on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in perennial ryegrass/white clover pastures in south-western Victoria, Australia

FR McKenzie, JL Jacobs

GRASS AND FORAGE SCIENCE | BLACKWELL PUBLISHING LTD | Published : 2002

Abstract

Effects of timing and rate of N fertilizer application on concentrations of P, K, S, Ca, Mg, Na, Cl, Mn, Fe, Cu and Zn in herbage from perennial ryegrass/white clover pastures were studied at two sites in southwestern Victoria, Australia. Nitrogen fertilizer (0, 15, 25, 30, 45 and 60 kg ha(-1)) was applied as urea in mid-April, early May, mid-May, early June and mid-June 1996 to pastures grazed by dairy cows. At Site 1, N fertilizer resulted in a linear increase in P, K, S, Mg and Cl concentrations in herbage and a linear decrease in Ca concentration. For all times of application, concentrations of P, K, Ca, Mg and Cl in herbage increased by 0.0048, 0.08, -0.010, 0.0013 and 0.053 g kg(-1) dr..

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