Source: Dan Nosowitz, MODERN FARMER, 2/8/21

California is the nation’s leading grower of crops in the Brassica family, including broccoli, Brussels sprouts, cabbage and kale, and it isn’t particularly close. Those crops, though, have historically run into problems with a particular pest, a parasitic nematode that can cause millions of dollars in decreased yield. Over the decades, something weird has happened in those fields: Pesticide use targeted at that nematode declined, but the presence of the pest also declined, and yields rose. So, what’s going on?

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