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2014 Tift County Melon Update

Stanley Culpepper
Professor and Extension Weed Specialist
University of Georgia

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TABLE OF CONTENTS

2014 Tift County Melon Update Photo Cantaloupe-Cotton Intercropping Watermelon-Cotton Intercropping Intercropping Systems Cantaloupe Watermelon Squash Conclusions Cotton Yield Peanut Yield Soybean Yield Intercropping Cucurbits with Cotton Cotton Tolerance to Sonalan/Curbit TREFLAN 4-D LABEL (GA ONLY) - Intercropping Cucurbits with Cotton Treflan HFP Treflan HFP Sandea Sandea Sinbar Sinbar Injury Reflex 2014 New Labels-Reflex 2014 New Labels-Reflex Photo Treflan HFP - Watermelon Intercrop 2014 New Labels-Reflex REFLEX UNDER MULCH REFLEX PREPLANT ON YELLOW NUTSEDGE Cantaloupe Response to Reflex? Photo Reflex 1 pt/A applied 205 days before transplanting 2014 New Labels-Dual Magnum Mulched watermelon injury to Dual Magnum applied post-transplant on mulch. TyTy, 2010. Photo FOR WEED CONTROL METAM SODIUM (Vapam, others) STILL BEST OPTION UNDER MULCH Questions or Comments?

SLIDE CONTENTS

2014 Tift County Melon Update Intercropping Herbicide update Cantaloupe-Cotton Intercropping Watermelon-Cotton Intercropping *Monoculture of each crop included for comparison. Cantaloupe Cotton Soybean Peanut 30 days after transplant Watermelon Cotton Soybean Peanut 30 days after transplant Squash Cotton Soybean Peanut 30 days after transplant Conclusions Cotton Yield *Monoculture yield=1,125 lbs/A (a) Peanut Yield *Monoculture yield=5,155 lbs/A (a) . Soybean Yield 66 bu/A (a) *Monoculture yield=68 bu/A (a) Intercropping Cucurbits with Cotton Cotton Tolerance to Sonalan/Curbit good tolerance BUT no label for cotton TREFLAN 4-D LABEL (GA ONLY) – Intercropping Cucurbits with Cotton Apply with burndown over mulch (prior to punching holes). A single 0.5” rain/irrigation to wash mulch and to active herbicide within 24 hr. Apply 1 to 2 pts depending on soil type. Wait at least 1 d prior to transplanting. Can also apply PRE to cotton (directed to melons)……don’t exceed max use rate. Treflan HFP Labeled for cotton. Melon label: Apply Treflan as direct spray to soil between rows after 3 to 4 leaves. (Rates from 1-2 pts) Treflan HFP Gramoxone + Treflan Plow Treflan band after cotton Wash mulch Sandea Watermelon: row middle Cantaloupe: topical No cotton label!!!! Sandea *Consistent cotton stunting 10-20%, if planting without tillage in 14 to 21 days. *Spot spray for nutsedge? *Cultivation (tillage will reduce injury). Sinbar Watermelon: great tool Cantaloupe: bad idea Cotton: disaster Sinbar Injury Reflex Watermelon Preplant: great tool Cantaloupe Anytime: bad idea Cotton Preplant: great tool 2014 New Labels-Reflex Watermelon Bareground seed: 10 to 12 oz/A PRE Bareground transplant: A. Prepare land; B. Apply 10-12 oz Reflex C. Irrigate D. Punch hole and transplant Not Labeled 2014 New Labels-Reflex Watermelon Mulch Seed or transplant: May apply over mulch; must wash ½ inch; 10-12 oz/A Not Labeled Treflan HFP – Watermelon Intercrop Gramoxone+ Treflan + Reflex Plow Treflan band after cotton Wash mulch 2014 New Labels-Reflex Watermelon Mulch Seed or transplant: May apply over mulch; must wash ½ inch; 10-12 oz/A Can apply under mulch if not disturbed when laying mulch at 10 to 12 oz/A. Row middles 16 oz/A Not Labeled REFLEX UNDER MULCH 50-70% yellow nutsedge under mulch control, excellent Pigweed control Spray after laying drip tape REFLEX PREPLANT ON YELLOW NUTSEDGE Cantaloupe Response to Reflex? No Reflex Reflex 1 pt/A applied 205 days before transplanting Watermelon and Cantaloupe - Row middle bareground: 8 to 12 oz/A - Row middle mulch: 12 to 16 oz/A - Do not apply topically - Do not broadcast over mulch 2014 New Labels-Dual Magnum 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 % FOR WEED CONTROL METAM SODIUM (Vapam, others) STILL BEST OPTION UNDER MULCH Questions or Comments?