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Weed Technology

Eizenberg, H., Department of Weed Research, Agricultural Research Organization, Newe ya'Ar Research Center, P.O. Box 1021, Ramat Yishay, Israel
Goldwasser, Y.
Achdary, G.
Hershenhorn, J., Department of Crop and Soil Science, Crop Science Building 331B, Oregon State University, Corvallis, OR 97331, United States

There are few efficient and cost-effective methods for controlling weeds in processing tomatoes. Sulfosulfuron is a sulfonylurea herbicide developed for controlling weeds in wheat. In previous studies, we have demonstrated the efficacy of sulfosulfuron in selectively controlling Oro- banche aegyptiaca in tomato. The objective of the present study was to elucidate the potential of sulfosulfuron to selectively control troublesome, nonparasitic weeds in tomato. In the greenhouse, sulfosulfuron efficacy at 37.5, 75.0, and 112.5 g ai/ha applied preplant incorporated (PPI), preemer- gence (PRE), and postemergence (POST) was tested. Sulfosulfuron when applied PPI and POST was highly selective in controlling weeds without causing injury to tomato. The weeds that were efficiently controlled, even at low rates of application, included purple nutsedge, black nightshade, mustard, pigweed, and bindweed. PRE application resulted in the most efficient weed control but was phytotoxic to tomato at high rates.
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The potential of sulfosulfuron to control troublesome weeds in tomato
17

Eizenberg, H., Department of Weed Research, Agricultural Research Organization, Newe ya'Ar Research Center, P.O. Box 1021, Ramat Yishay, Israel
Goldwasser, Y.
Achdary, G.
Hershenhorn, J., Department of Crop and Soil Science, Crop Science Building 331B, Oregon State University, Corvallis, OR 97331, United States

The potential of sulfosulfuron to control troublesome weeds in tomato
There are few efficient and cost-effective methods for controlling weeds in processing tomatoes. Sulfosulfuron is a sulfonylurea herbicide developed for controlling weeds in wheat. In previous studies, we have demonstrated the efficacy of sulfosulfuron in selectively controlling Oro- banche aegyptiaca in tomato. The objective of the present study was to elucidate the potential of sulfosulfuron to selectively control troublesome, nonparasitic weeds in tomato. In the greenhouse, sulfosulfuron efficacy at 37.5, 75.0, and 112.5 g ai/ha applied preplant incorporated (PPI), preemer- gence (PRE), and postemergence (POST) was tested. Sulfosulfuron when applied PPI and POST was highly selective in controlling weeds without causing injury to tomato. The weeds that were efficiently controlled, even at low rates of application, included purple nutsedge, black nightshade, mustard, pigweed, and bindweed. PRE application resulted in the most efficient weed control but was phytotoxic to tomato at high rates.
Scientific Publication
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