Estimation of the lime requirement to raise soil pH to 6.0 and 6.5 by long incubation, short incubation and by the solution TSM used in the equation of the CQFS-RS ... Soil lime requirement by direct ...

Department of Applied Mathematics, Western University, London, Ontario, Canada N6A 5B7, Canada Author for correspondence. Department of Mathematics, Northeast Forestry University, Harbin 150040, P. R.