2014 Tift County Melon Update Intercropping Herbicide update

Cantaloupe-Cotton Intercropping Cantaloupe Cotton Yield No reduction 0 -12% reduction Crop value 17% increase >1, 000 increase

Watermelon-Cotton Intercropping Watermelon Cotton Yield No reduction 12 -18% reduction Crop Value 14% increase >1, 000 increase

Cotton Intercropping Systems* Cantaloupe Peanut Soybean Cotton Watermelon Peanut Soybean Cotton Squash *Monoculture of each crop included for comparison. Peanut Soybean

Cantaloupe Cotton 30 days after transplant Peanut Soybean

Watermelon Cotton 30 days after transplant Peanut Soybean

Squash Cotton 30 days after transplant Peanut Soybean

Conclusions Row crop Cucurbit crop Watermelon Cantaloupe Squash Soybean Peanut Cotton

Cotton Yield 1, 135 lbs/A (a) 1, 325 lbs/A (a) *Monoculture yield=1, 125 lbs/A (a) 1, 215 lbs/A (a)

Peanut Yield 5, 575 lbs/A (a) 5, 530 lbs/A (a) *Monoculture yield=5, 155 lbs/A (a). 5, 515 lbs/A (a)

Soybean Yield 59 bu/A (a) 28 bu/A (b) *Monoculture yield=68 bu/A (a) 66 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 1. Apply with burndown over mulch (prior to punching holes). 2. A single 0. 5” rain/irrigation to wash mulch and to active herbicide within 24 hr. 3. Apply 1 to 2 pts depending on soil type. 4. Wait at least 1 d prior to transplanting. 5. 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 Wash mulch Plow Treflan band after cotton

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: A. May apply over mulch; must wash ½ inch; 10 -12 oz/A Not Labeled

Treflan HFP – Watermelon Intercrop Gramoxone + Treflan + Reflex Wash mulch Plow Treflan band after cotton

2014 New Labels-Reflex Watermelon Mulch Seed or transplant: A. May apply over mulch; must wash ½ inch; 10 -12 oz/A B. Can apply under mulch if not disturbed when laying mulch at 10 to 12 oz/A. C. 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 1 pt/A applied 205 days before transplanting

2014 New Labels-Dual Magnum 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