IRRIGATION TRENDS IN WESTERN U.S.A. AND NEW ZEALAND Authors D.G. Aldridge DOI: https://doi.org/10.33584/jnzg.1974.36.1396 Abstract ALTHOUGH western U.S.A. has much more land under irrigation than New Zealand, the percentage of this laad irrigated by surface irrigatio,n is similar in both courrtries, being 60% in western U.S.A. and 66% in New Zealand. Downloads PDF Published 1974-01-01 Issue Volume 36, 1974, Oamaru Section Articles