Taranaki pasture (IMAGE) American Society of Agronomy Caption Ryegrass/clover pasture growing on fertile Taranaki allophanic soils formed from volcanic ash erupted by Mt. Taranaki in the background. Animals graze pasture developed on these soils year-round. Credit Paramsothy Jeyakumar Usage Restrictions For use with this story only. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.