Studies were conducted on three field trials of wheat cv. Kopara to investigate the lack of compensation by later determined components of yield because of early disease constraints. The investigation was based on the ...

For large areas of New Zealand that suffer from agricultural drought, the only practicable way of providing irrigation is through the use of water harvesting schemes that divert winter flood water in nearby streams into ...

Past development efforts in the Kingdom of Tonga are reviewed in relation to the goals of reducing poverty, unemployment and inequality. It is shown that progress has been strictly limited and evidence is provided to support ...

The Resource Management Act (1991) created a major shift in the legislative framework for environmental management in New Zealand. The Act devolved power to local and regional government, and focused on the environmental ...

The Westland Petrel (Procellaria westlandica) population is thought to have increased significantly in recent decades, perhaps as a result of increased food in the form of waste from fishing vessels. A survey of Westland ...

This paper presents an overview of the risk literature, concentrating on general approaches to risk analysis and risk assessment. We believe that this is an essential first step towards the setting of guidelines or the ...

Vertebrate pest control operations using toxic baits can have unintended consequences for nontarget species. some of which may themselves be pests. Learned avoidance behaviour (termed 'aversion') can be induced by sublethal ...

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 ...

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 ...

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 ...