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Weeding often takes place when the crop plant is very young, and most vulnerable.

One was the great success of farmers in breeding cattle and crop plants.

For growing crop plants the following conditions must be present:

In 1930 the first patent for a crop plant was approved.

As Table 8.6 shows, two further plant attributes are being exploited to produce new crop plants.

The findings could lead to new ways of protecting crop plants from these viruses.

That wasn't thought to be much of a danger because most crop plants are self-fertilizing.

The first commercial sales of genetically altered crop plants are not expected until 1994 or 1995.

He is best known for showing how and where crop plants evolved.

Gradually, all the weeds look more like the crop plant.