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Agriculture Report - The Seeds of Weed Control Advice for suppressing the growth of unwelcome plants. Transcript of radio broadcast: 17 March 2008 This is the VOA Special English Agriculture Report. When is a plant a weed? When its undesirable quali

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This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider that crops generally produce several hu

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Getting a Firm Grip on Weed Control This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider the

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VOA慢速英语2012 Agriculture Report - Getting a Firm Grip on Weed Control

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