Sodium requirements for temperate pastures in New Zealand: A review

Autor:	M. B. O'Connor, D. C. Edmeades
Rok vydání:	2003
Předmět:	geography geography.geographical_feature_category Sodium Soil Science chemistry.chemical_element Forage Plant Science Biology Pasture Nutrient chemistry Agronomy Soil water Temperate climate Animal Science and Zoology Dry matter Soil fertility Agronomy and Crop Science
Zdroj:	New Zealand Journal of Agricultural Research. 46:37-47
ISSN:	1175-8775 0028-8233
DOI:	10.1080/00288233.2003.9513527
Popis:	Sodium (Na) is not an essential plant nutrient for forage pasture species but is required for optimal animal health and production. The distribution of Na in New Zealand pastures and soils is reviewed and evidence discussed indicating that the incidence of Na deficiency in animals, particularly dairy cows, is likely to increase with time. Vulnerable regions within New Zealand are identified. The results from New Zealand trials confirm that animal production responses to Na supplementation or fertiliser Na are unlikely to occur if the pasture Na concentration is greater than 0.10%. Results from trials examining the effects of Na fertiliser on pasture production and chemical composition are also reviewed. On soils with adequate soil potassium, Na has no effect on pasture production and applications of 50–100 kg NaCl/ha are sufficient to increase pasture Na concentration above the critical level for animal production (0.10% dry matter (DM)), even on soils with low initial soil Na concentrations (MAF...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ea4375432bded63be251f5f0ce79916e https://doi.org/10.1080/00288233.2003.9513527 Zobrazit plný text záznamu