THE RECLAMATION OF ACIDIC COLLIERY SPOIL. III. PROBLEMS ASSOCIATED WITH THE USE OF HIGH RATES OF LIMESTONE

@inproceedings{Costigan1982THERO,
  title={THE RECLAMATION OF ACIDIC COLLIERY SPOIL. III. PROBLEMS ASSOCIATED WITH THE USE OF HIGH RATES OF LIMESTONE},
  author={P. A. Costigan and A. D. Bradshaw and Raymond P. Gemmell and Wigan Wn},
  year={1982}
}
(1) Growth of Trifolium repens in acidic colliery spoil was suppressed by more than 90% when agricultural ground calcitic limestone was applied at above 5 t ha-l whereas Lolium perenne was unaffected at rates up to o00 t ha-'. (2) The inhibitory effect of ground limestone on T. repens was reduced by high phosphorus fertilization and disappeared within 34 weeks of treatment. (3) There was some evidence that high liming caused an imbalance of the Ca/Mg ratio in freshly limed spoil, contributing… CONTINUE READING