Fifth consequence resistance breeding abandoned

The fifth consequence results from the first four, and it is that many plant breeders have now abandoned vertical resistance breeding in favour of crop protection chemicals. There can be no doubt that this dereliction has made other breeding objectives (e.g., crop yield, quality of crop product, agronomic suitability) very much easier to attain. However, this dangerously unbalanced situation continues to deteriorate, and the need for crop protection chemicals continues to increase, as the level of horizontal resistance continues to decline. The use of transgenic resistances, produced by genetic engineering, will not help this situation if they too provide an ephemeral resistance.

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