Now showing items 1-10 of 27
Chemical nature and plant availability of phosphorus present in soils under long-term fertilised irrigated pastures in Canterbury, New Zealand
(Lincoln College, University of Canterbury, 1986)
Soil P fractionation was used to examine changes in soil inorganic and organic P under grazed irrigated pasture in a long-term field trial at Winchmore in Mid-Canterbury. The soil P fractionation scheme used involved ...
Effects of long-term inputs of fertiliser and irrigation on soil carbon under grazed pasture
(International Union of Soil Science, 2010-08)
Soils constitute the largest pool of terrestrial carbon, and the development and adoption of methods designed to increase storage of carbon is an effective means of reducing atmospheric carbon dioxide. The main objective ...
Effects of plantation forest species on soil properties
(International Union of Soil Sciences, 2010-08)
Large scale afforestation of grasslands has occurred in New Zealand. Detailed investigation of changes in soil properties over time following establishment of different tree species is necessary to understand the impacts ...
A Review of Biochar and Soil Nitrogen Dynamics
Phosphorus-31 nuclear magnetic resonance spectral assignments of phosphorus compounds in soil NaOH–EDTA extracts
(Soil Science Society of America, 2003)
Soil P composition can be conveniently determined in alkaline extracts using solution ³¹P nuclear magnetic resonance (NMR) spectroscopy, but spectral assignments are based on fragmentary literature reports of model compounds ...
Forage responses to lime and nitrogen fertiliser on land converted from pine forest to dryland pasture in Canterbury
(New Zealand Grassland Association., 2007)
A field trial was established to quantify the impacts of lime (0, 2.5, 5 and 10 t/ha) and nitrogen (N) fertiliser (0, 50, 100, 200 and 400 kg N/ha/year) addition on the dry matter (DM) production of a crop sequence of ...
Implications of long-term superphosphate applications on the accumulation and plant availability of soil phosphorus under irrigated pastures
(New Zealand Grassland Association., 1990)
Changes in soil phosphorus (P) associated with the establishment and maintenance of improved ryegrass-clover pasture under different superphosphate fertiliser treatments were examined over a 20-year period (1957-77). Results ...
Processes governing phosphorus availability in temperate soils
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2000)
Phosphorus losses from agricultural soil to water bodies are mainly related to the excessive accumulation of available P in soil as a result of long-term inputs of fertilizer P. Since P is a nonrenewable resource, there ...
Changes in Cd bioavailability in metal spiked soils amended with biosolids: results from a wheat seedling bioassay
(International Union of Soil Sciences., 2010-08)
Three contrasting soils were collected from the Canterbury region in New Zealand and treated with a one-off application of Cd (1, 5 and 10 mg/kg applied as sulphate), in the presence and absence of biosolids applied at a ...
Using nitrogen fertiliser to decrease phosphorus loss from high phosphorus soils
Decline in soil phosphorus (P) concentrations is slow, and environmentally significant concentrations of P can be lost to water long after fertiliser application is decreased. One potential method to accelerate the decline ...