Spatial diversity indicators may serve policymakers as they seek to manage crop genetic diversity and externalities associated with diffusion of some genetically modified crops. This paper adapts ecological indices of spatial diversity to area distributions of modern wheat varieties in...

This study utilized the cluster analysis to examine effectiveness of fluid milk advertising in Taiwan. Consumers with different perceptions of advertising were grouped into three clusters. The “high-perception” cluster consisted of larger percentage of women at ages 26 to 35, with higher...

Modelling of cropping or crop-pasture rotations to date has been based on a predetermined, restricted set of rotations as “activities” of a Linear Programming matrix. This approach limits the use of such models to evaluate new crop varieties and potential rotations. It also results in the...

The introduction of genetically modified (GM) crops raises several issues. This paper looks at incentives required to reduce problems of illegal and improper use of GM proprietary technology used in growing GM crops. A simple model of producer behaviour describes some key influences of a...

Herbicide resistance has become a major problem in Australian dryland agriculture. This situation has resulted from the repeated use of herbicides in place of the traditional weed control provided by cultivation and grazing. Farmers have addressed the problem of herbicide resistance by adopting...

Through the comprehensive regulation international agricultural trade, the GATT Uruguay Round was already a significant move towards the elimination of market distorting factors/barriers. But the Agreement of Agriculture was only the first step on this long path and at the same time certain...

Cities have been investing heavily in recent years to augment their water supply, focusing on either stormwater harvesting or desalination. A more optimal strategy is to consider all sources of water jointly, thereby allowing for hedging of supply risks. A portfolio model of urban water supply...

Oil and gas have been produced on the Norwegian continental shelf since 1971. Exploration rates, extraction rates, employment, expertise levels, exports of oil and gas have all increased many fold during 1971-­‐2013. The State has several roles in the Norwegian petroleum sector including...

A two-country, three-good general equilibrium model is developed to examine the welfare and environmental effects for countries (North and South) of demand subsidies (a feed-in tariff) to renewable energy equipment, as well as tariffs on renewable energy equipment imports. Both North and South...