Now showing items 11-20 of 814
Humic acid protonation, metal ion binding and metal complex dissociation kinetics
(Lincoln University, 1990)
Two humic acids have been studied in terms of: (i) their ability to bind H⁺, Cd²⁺ and Cu²⁺, and; (ii) the rates of dissociation of their Cu²⁺ complexes. For both Summit Hill and Waimari Peat humic acids, the protonation ...
Effect of physiological and behavioural characteristics of parasitoids on host specificity testing outcomes and the biological control of Paropsis charybdis
(Lincoln University, 2010)
An established host-parasitoid-hyperparasitoid system was used to investigate how the physiological and behavioural characteristics of parasitoids influence the outcomes of laboratory-based host specificity tests. The ...
Intraspecific variation in Microctonus hyperdoae and M. aethipopides (Hymenoptera: Braconidae); significance for their use of biological control agents
(Lincoln University, 1995)
Microctonus aethiopoides Loan and M. hyperodae Loan (Hymenoptera: Braconidae; Euphorinae) are parasitoids introduced to New Zealand to assist suppression of the lucerne pest Sitona discoideus Gyllenhal and the pasture pest ...
Risk management strategies for the long run use of resources: the impact of climate change on agriculture
(Lincoln University. Centre for Resource Management., 1992-07)
This publication is the result of a research contract completed for MAF Rural Policy Unit in 1991. The brief was to develop a policy framework to assist in the analysis of the issues raised by climate change and the ...
Sorption behaviour and plant availability of copper in soils
(Lincoln College, University of Canterbury, 1988)
Some New Zealand soils were shown to have a high affinity for low concentrations of added copper. Between 95 - 100% of added copper was adsorbed by these soils. Adsorption isotherm gradients calculated using total solution ...
Monitoring the New Zealand costal policy statement: a preliminary assessment
(Lincoln University. Lincoln Environmental. Centre for Resource Management., 1994-10)
Mineral nitrogen regimes in soils of natural and modified snow tussock grasslands of Canterbury and Otago, New Zealand
(Lincoln College, University of Canterbury, 1983)
Mineral nitrogen (N) levels in natural grasslands of the world fluctuate in response to a range of environmental influences but are generally low with ammonium (NH₄-N) levels usually below 10 µg g⁻¹ soil and nitrate (NO₃-N) ...
Predator interactions within a trophic level : Phalangium opilio L. (Arachnida: Opiliones) and mites (Arachnida: Acari)
(Lincoln University, 2000)
This study investigated commensal feeding interactions between the European harvestman (P. opilio L.) and the predatory mites Balaustium spp. and Anystis baccarum L. It also investigated the feeding behaviour of P. opilio. ...
Tortricid moth pest management in Canterbury apple orchards
(Lincoln College, University of Canterbury, 1984)
Orchard practices and pest abundance were monitored at five sites over three seasons. Canterbury apple orchardists could produce high quality fruit with less than 1% damage using as few as four insecticide sprays per season. ...
Variability of harvest index in four grain legume species
(Lincoln University, 2001)
Grain legumes have the potential to be high yielding crops in Canterbury. However, like most grain legumes the problem of harvest index (HI) variability in Cicer arietinum, Lens culinaris, Lupinus angustifolius and Pisum ...