Open AccessCROWN RUST AND PASTURE PRODUCTION
Author(s) -
J. A. Lancashire,
G. C. M. Latch
Publication year - 1968
Publication title -
proceedings of the new zealand grassland association
Language(s) - English
Resource type - Journals
eISSN - 1179-4577
pISSN - 0369-3902
DOI - 10.33584/jnzg.1968.30.1255
Subject(s) - pasture , acre , grazing , grassland , limiting , production (economics) , agroforestry , agronomy , biology , economics , engineering , mechanical engineering , macroeconomics
THERE is much information available on New Zealand's grasslands which indicates the vast difference between various theoretical plant (Mitchell, 1963) and animal (Hutton, 1963) production potentials and what is actually achieved in practice. Although these potentials are often regarded with scepticism, the fact remains that many research and demonstration farms and top farmers now produce quantities of animal products per acre which would have appeared ridiculously high a few years ago. Further, much grassland research is concerned with the identification of factors limiting the attainment of these potentials, as shown by work on treading (Edmond, 1966), nutrient cycling under grazing systems (Sears, 1953), and the optimum stage and intensity of defoliation of pasture plants (Brougham, 1961).