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Weed Control Questions

Question 1

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Answer 1

The reason probably resides in the lack of financial incentive for commercial development. Once weeds are controlled, the market for the product declines. The process for developing a new product is extensive and expensive. Release of new products is also under considerable regulatory constraints. Thus a long-term investment is needed, and the outcome is not assured.


Question 2

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Answer 2

Rusts can quickly establish an epidemic in their specific host. Further, the fungi produce huge numbers of spores that may be disseminated long distances. Colonisation can take place rapidly, and the fungi reproduce soon after initial colonisation. Finally, the fungi are capable of genetic change through the sexual cycle, in many cases.


Question 3

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Answer 3



Question 4

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Answer 4



Question 5

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Answer 5



Question 6

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Answer 6



Question 7

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Answer 7