The cannabis industry has been on a rough ride for the past few years. Sales are down in some of the nation's most prolific markets, including Washington and Colorado.

Most states allow some sale of cannabis, but testing for pesticides and mold in the weed supply varies from one state to ...

Millions of Americans use cannabis and would like to think the products they buy are safe. But regulation is state by state ...

Weed suppression is an important factor affecting crop yields. Precise identification of weed species will contribute to automatic weeding by applying proper herbicides, hoeing position determination, ...

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