"If you look at the bottom line, I don" t think you are going to see potash prices fall off the way you "ve seen nitrogen and phosphate prices fall off recently," said Morningstar analyst Ben Johnson.

“如果你看看的底线，我不认为你会看到钾肥价格下跌了你见过氮和磷酸盐价格下降了最近说，”晨星公司分析师本约翰逊。

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"We don't understand why Morningstar is recommending this fund, " says Lange.

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One-third of the 485 ETF strategies tracked by Morningstar don't have even three years of performance history.

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Meanwhile, Morningstar doesn't use a bell curve for its qualitative analyst ratings, which it launched more than a year ago.

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