Slide Presentation
TITLE
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2016 Watermelon Weed Update
AUTHOR
Stanley Culpepper
Professor and Extension Weed Specialist
University of Georgia
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TABLE OF CONTENTS
2016 Watermelon Weed Update
Georgia Department of Agriculture
Watermelon - Key Players
Small bed Plastic: Overtop Application
Small bed Plastic: Overtop Application
Small bed Plastic: Under Mulch
Tillage can be helpful . . . Plowing
Just before watermelon begin to vine: Plow, Dual Magnum, Sandea
Mulched watermelon injury to Dual Magnum applied post-transplant on mulch. TyTy, 2010.
Bareground: Preplant: (Sinbar + Reflex + Roundup or Gramox; can add Sandea?
Lightly irrigate after applying herbicide and poking hole
Big Bed Plastic: Fumigant Systems
Grass Control Herbicides
Watermelon Intercrop
Sinbar Injury
Sinbar CarryOver Concerns.
Reflex 1 pt/A applied 205 days before transplanting
Cantaloupe - Preplant/At Plant - Command, Curbit, Metam, Sandea
Cantaloupe - Preplant/At Plant - Sandea, Select Max, Treflan, Dual Magnum
Reflex Prior to Transplant
Questions or Comments?
SLIDE CONTENTS
2016 Watermelon Weed Update
INDUSTRY Georgia Department of Agriculture Commissioner Gary Black
Watermelon Key Players: Curbit Sinbar Reflex Dual Magnum Select Max Sandea Metam sodium
Small bed Plastic: Overtop Application (Sinbar + Reflex + Yellow + Roundup or Gramox.)
Small bed Plastic: Overtop Application (Sinbar + Reflex + Yellow + Roundup or Gramox.) Wash herbicide off mulch that has no holes! No Sandea over mulch
Small bed Plastic: Under Mulch (Reflex, Sinbar, Sandea-7d preplant, Metam) Under mulch? No Yellow under mulch
Plowing emerged weeds is an effective tool. Plowing up residual herbicide….not so much. If plowing, apply residual herbicide after plowing if possible. Tillage can be helpful……Plowing.
Just before watermelon begin to vine: Plow if needed and then apply Dual Magnum Use Sandea as needed for row middle
Mulched watermelon injury to Dual Magnum applied post-transplant on mulch. TyTy, 2010. 8 d 16 c 40 b 8 oz 12 oz 50 a 24 oz 36 oz %
Bareground: Preplant: (Sinbar + Reflex + Yellow + Roundup or Gramox; can add Sandea? X
Lightly irrigate after applying herbicide and poking hole Bareground: Preplant: (Sinbar + Reflex + Yellow + Roundup or Gramox; can add Sandea? X
Big Bed Plastic: Fumigant Systems Chateau + Dual Magnum + Yellow in row middle; do not contact top of mulch
Grass Control Herbicides Select Max 9-10 oz with grass 3” or less
Watermelon Intercrop Gramoxone+ Treflan + Reflex Plow Treflan band after cotton Wash mulch Overhead irrigation important
Sinbar Injury
Sinbar CarryOver Concerns. TyTy, GA 2015 tomato pepper eggplant corn % soybean cotton
No Reflex Reflex 1 pt/A applied 205 days before transplanting
Cantaloupe – Preplant/At Plant Command: watch carryover Curbit: don’t put under plastic Metam: under mulch?? Sandea: 7 day preplant NEED NEW TOOLS!!!!!
Cantaloupe – Preplant/At Plant Sandea: POST for nutsedge Select Max: Grasses 3” or smaller Treflan: row middle Dual Magnum: row middle
Reflex Prior to Transplant No Reflex Preplant
Questions or Comments?