Weed control and timing of treatment to avoid weed penalty.

杂草控制及适时处理，以防止其蔓延危害作物。

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Accurate weed identification is the first step in a successful weed control program.

对杂草的精确确认是杂草控制项目成功的第一步。

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Accurate weed identification is the first step in a successful weed control program.

对杂草的精确确认是杂草控制项目成功的第一步。

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