pests and disease can spread easily, creating the need for potentially toxic pesticides.

草原变得只生长一种作物。 病虫害容易扩散，将增加使用有潜在毒性杀虫剂的需要。

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Weeds can detract from the beauty of your garden, plus they can bring garden pests and disease.

野草不仅会破坏花园的美观，还会给花园带来虫害和病害。

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By eavesdropping on plants it should be possible to develop an early warning system to detect pests and disease.

通过探测植物的声音可以形成预警机制，探明植物病虫害情况。

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Ocean life would die off, while pests and disease would increase, the report says.

CNN: More voices needed in climate debate

But one of the issue if you have with that is for disease and pests, if you want to have crop rotation which when you only have one place to grow something it's kind of like, am I going to take three years off growing tomatoes.

NPR: Vegetable Gardening On A Budget

Dr John Morgan, head of the Forestry Commission's plant health service, said the work would help shed light on "the history and nature of the introduction of new pests like Chalara, and in helping to understand how we tackle the disease that's arrived and to understand what the risk of spreading is".

BBC: Ash fungus genetic data released