" Agribusiness Crop Updates 2006 Analysis of a wheat-pasture rotation in the 330 annual rainfall zone using the STEP model Andrew Blake and Caroline Peek, Department of Agriculture, Geraldton mm.. KEYMESSAGES Self regenerating biserrula pastures grown in rotation with wheat were more profitable than volunteer pastures based on the assumption that the legume phase can lift wheat yields and improve grain quality... It was assumed that wheat grown in the first or second year after legume pasture would be higher in protein and attract the $10/tonne premium paid in the AH segregation...
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The allocation of crop fertilisers, seed and soil amelioration inputs in accordance with variation in PAWC can result in increased return on funds employed ("ROFE") for broad acre cropping operations in WA... Yield Prophet can be used to model expected variation in crop yield according to variation in PAWC and other variables including variety, time of sowing, and nitrogen strategies... Margin analysis demonstrated a $39/ha increase in gross margin or 13% increase in ROFE was achieved by matching inputs to soil zone...