Watermelon Update GFVGA Annual Meeting.

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Presentation transcript:

Watermelon Update GFVGA Annual Meeting

Watermelon Weed Management Strategy Sandea Pigweed control Nutsedge control Morningglory control

Strategy cucumbers, melons, squash and watermelons contains 1.6 lb ethalfluralin (Curbit) and 0.5 lb clomazone (Command) per gallon

Curbit removed from the market???? replaced with Strategy

Strategy Soil Broadcast Amount of Amount of Texture Rate Curbit Command Coarse 2-3 pt 1-1.5 pt 0.33-0.5 pt Medium 3-4 pt 1.5-2 pt 0.5-0.67 pt Fine 4-6 pt 2-3 pt 0.67-1 pt Georgia use rate for most fields should be 2-3 pt/A.

Strategy DO NOT incorporate prior to planting DO NOT apply under or OVER row covers, mulches, or other plant covers Beware of the potential for heavy rain Do not make broadcast applications to transplants

Watermelon Injury from Strategy Applied Topical 1 wk After Transplant

Strategy Apply prior to weed emergence Apply to seeded crop prior to emergence, or apply as a banded spray between rows after crop emergence or transplanting.

Strategy Should be able to obtain same rate of ethalfluralin (Curbit). Command should enhance activity of annual grasses (expect Texas panicum), sida, croton, lambsquarters. Buffer restrictions are identical to Command applied alone Be aware of carryover from clomazone

Possible preemergence label for watermelon Gowan Company & I changed the logo – this is the new logo we should be using for future presentations and promotional materials. I changed the logo thru-out the presentation. If you would like a PowerPoint template for Sandea, let me know. We have one that has a tan background and the mountains at the bottom. Possible preemergence label for watermelon

Watermelon Label -- Row middle application, 2003 WILL NOT ALLOW POST APPLICATION Possible PRE label in 2004 Cooperative work with Ken Lewis, Crisp Co. and Tom Jennings, Wilcox Co.

Nontreated Sandea (0.024 lb ai/A) Watermelon farm in Crisp County, May 2000. Treatment at 1-leaf. Pictures to scale.

Sandea for PRE Weed Control common cocklebur wild radish pigweeds common ragweed common lambsquarters yellow nutsedge - suppression purple nutsedge - suppression 2 to 3 weeks residual weed control

Pigweed Control by Sandea 0.67 oz PRE = 90 to 100%

Non-treated Control Sandea (0.5 oz/A) PRE W1-00. Halosulfuron study with Ken Lewis in Cordele.

Nutsedge Control by Sandea 0.67 oz PRE = 65-80% for about 3 wk

No herbicide Sandea PRE

15 DAT non-treated Sandea 2/3 oz + Curbit 1.5 pt

Pigweed Management

Pigweed Management 1) Curbit preemergence 2) Strategy preemergence Alanap preemergence or postemergence Treflan row middle

Pigweed Response to Watermelon Herbicide Systems at 26 DAT Pigweed Response to Watermelon Herbicide Systems at 26 DAT. Crisp/Wilcox Co. 2002. % control b a Curbit, 1.5 pt/A; Strategy, 3 pt/A; Sandea 0.75 oz/A; Alanap 5 qt/A.

Pigweed Response to Watermelon Herbicide Systems at 42 DAT Pigweed Response to Watermelon Herbicide Systems at 42 DAT. Crisp/Wilcox Co. 2002. a a a b c % control Curbit, 1.5 pt/A; Strategy, 3 pt/A; Sandea 0.75 oz/A; Alanap 5 qt/A.

Reduction of Herbicide Control Tillage that disrupts herbicide layer will reduce control drastically

Morningglory and Nutsedge Sandea row middle for nutsedge Tillage and competitive crop

Read Labels Sandea carryover or tank clean out issues Command or Strategy buffer requirements

Gowan Company & I changed the logo – this is the new logo we should be using for future presentations and promotional materials. I changed the logo thru-out the presentation. If you would like a PowerPoint template for Sandea, let me know. We have one that has a tan background and the mountains at the bottom.