Now showing items 1-10 of 148
Thermography for characterization of soil water repellency at larger spatial scales
Soil water repellency (SWR) is natural phenomenon occurring in soils throughout the world. It is a surface property that reduces the attraction of soil for water. Measurement of soil water repellency is done at the point ...
Identification of Burkholderia and Penicillium isolates from kauri (Agathis australis) soils that inhibit the mycelial growth of Phytophthora agathidicida
(New Zealand Plant Protection Society, 2021-02-07)
Phytophthora agathidicida is a highly virulent pathogen of kauri (Agathis australis) and the causal agent of dieback disease in New Zealand’s kauri forests. This study aimed to identify microbial isolates isolated from ...
Early effects of surface liming on soil P biochemistry and dynamics in extensive grassland
Liming effects on soil phosphorus (P) availability via biological P cycling are not clear. We conducted an 18-month field experiment on a long-term (60 years +) permanent fertilized grassland in a relatively dry environment. ...
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
Objective: To investigate and quantify the effects of long-term increases in pasture production caused by variable inputs of fertiliser and irrigation on soil profile carbon under permanent grazed pasture.
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 ...
Relationship between microbial community properties and nitrogen mineralisation in soils after amendment with two forms of nitrogen
Microbial diversity in soils is considered important for maintaining sustainability of agricultural production systems. However, the links between microbial diversity and ecosystem processes are not well understood. This ...
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 ...
Seasonal fluctuations in phosphorus loss by leaching from a grassland soil
(Soil Science Society of America, 2004)
Phosphorus losses from soils have been reported to impair the water quality, resulting in deaths of fish and other marine animals, and can harm human health. The objective of this study was to determine the seasonal ...
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 ...