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Surface seal formation and subsoil compaction are two important factors of soil structural degradation, both of which reduce infiltration and increase surface runoff. Surface sealing has traditionally been related to rainfall energy; however, there has been very limited work on characterizing subsoil degradation resulting from wheeling energy imposed by agricultural machinery traffic. The objective...
Traffic and tillage effects on runoff, soil water and crop production under rainfall were investigated over a period of 6 years on a heavy clay vertosols (vertisols) in Queensland, Australia. A split plot design was used to isolate traffic effects, while the cropping program and treatments were broadly representative of extensive grain production practice in the northern grain region of Australia...
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