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4-bract squares observed (Collins, Edmisten & Reisig)
Story Date: 7/12/2022
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Source: NCSU COOPERATIVE EXTENSION, 7/9/22
We have observed multiple cases of 4-bract squares in NC cotton over the past few days. 4-bract squares are a phenomenon that isn’t completely understood, but is commonly associated with high temperatures early in the season. With temperatures reaching the mid to high 90’s during May and June, this isn’t necessarily a surprise. We expect more reports of 4-bract squares over the next week, as it is likely widespread. 4-bract squares can be both obvious and inconspicuous as illustrated in the images below.
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