The role and value of herbicide resistant lupins in Western Australian agriculture
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Herbicide resistant weeds are having a major impact on Australian agriculture In
response to this new problem, "genetic engineering" techniques are being used to
create new types of lupins which are resistant to non-selective herbicides which still kill
the weeds In this study the economic value of such a transgenic lupin was
investigated using a multiperiod bioeconomic model The model represents the
wheat/lupin cropping system of Western Australia. The profitability of a wide range
of weed control measures (both chemical and non-chemical) used separately and in
combination with a transgenic lupin are compared with the current options available to
farmers For the scenarios considered. it is found that a system involving a Basta®
resistant transgenic lupin would have similar profitability to a system based on current
lupin varieties employing Gramoxone® for crop topping. However, where a
transgenic lupin is resistant to glyphosate, and is used in conjunction with windrowing
of both crops, farm profit increases by 33 percent.