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herbicide injury ('sulfentrazone' ("Spartan")) on Tobacco (Nicotiana tabacum)


4 Images
5368771
Paul Bachi
University of Kentucky Research and Education Center

The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable.

5368772
Paul Bachi
University of Kentucky Research and Education Center

The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable.

5368773
Paul Bachi
University of Kentucky Research and Education Center

The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable.

5368774
Paul Bachi
University of Kentucky Research and Education Center

The leaves show two primary symptoms:1- areas or blotches of necrotic tissue that is due to splashing of “Spartan” up onto the leaf. It is associated with highrates of the herbicide (or overlapping), wet prone soils, and/or a heavy rain preceding the onset of symptoms by a few days. These symptoms are usually seenon the older leaves and little or no symptoms on the younger ones. The plants will usually grow out of the injury sustained earlier in the season. Plants taking up enough herbicide to cause injury later in the season will be stunted and the leaves that are injured are not marketable.