2003 Vegetable Herbicide Update

2003 Vegetable Herbicide UpdateGFVGA Annual Meeting

New Vegetable Herbicides for 2003Roundup WeatherMaxSelectStrategyMatrixCommandSandea

IR-4THEPROJECTINTERREGIONAL RESEARCH PROJECT NO. 4THE MINOR USE PROGRAMFunding provided by USDA (CSREES and ARS) and the SAES

Roundup WeatherMaxReplacing Roundup UltraMaxPotassium salt 5.5 lb salt/gal; 4.5 lb ae/gal30-min rainfree warrantyClaim better activity under marginal conditionsBetter bulk handling characteristics

Roundup WeatherMaxRow Middle ApplicationApply as hooded spray, shielded spray, or wiper application in row middles.

SelectCollard, kale, mustard, turnipControl of annual and perennial grassesApply 6 to 8 fl oz per acreAdd 1% crop oil concentrate to mix

Strategycucumbers, melons, squash and watermelons

contains 1.6 lb ethalfluralin (Curbit) and 0.5 lb clomazone (Command) per gallon

Curbitremoved 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 ptGeorgia use rate for most fields should be 2-3 pt/A.

StrategyDO 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

StrategyApply prior to weed emergence

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

StrategyShould 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

Matrix HerbicideActive is rimsulfuron, DuPont productApply in field grown tomato Apply 1 to 2 oz of product after at least two leavesAdd nonionic surfactant

Tomato Response to Matrix applied PRE and POST. TyTy, 2002.% injury

Matrix Weed ControlSpecific use herbicide:

Annual bluegrassLarge crabgrassFoxtailsFall panicmWild mustardRedroot pigweedCommon purslaneWild radish

Cocklebur*Lambsquarters*Morningglory*Hairy Nightshade**Label suggest only suppression of these weeds.

Command 3 ME Labels2003 cucumber (0.4 to 1.0 pt) apply after seeding or just prior to transplanting melons - musk and watermelon (0.4 to 0.67 pt/A) apply after seeding or just before transplanting lima bean, snap bean, pole bean, southern pea (0.47 to 0.67 pt) apply after seeding.

Command 3 ME Labels

Be Aware of the Buffer Restrictions and Potential Off-Target Movement

Sandea1) cucumber, cantaloupe, tomato 2) row middle for pepper, eggplant, squash, watermelon, pumpkin* 3) preemergence in succulent snap bean**Label anticipated in near future.

Sandea - Cucumber and Cantaloupe(Section 3 Label Soon)*No Plastic:0.5 to 0.75 oz applied after planting prior to soil cracking or apply and wait at least 7 d prior to transplant.0.5 to 0.75 oz POST after the crop has reached the 3-5 true leaf stage, but before flowering.0.5 to 0.75 oz POST no sooner than 14 d after transplant.Plastic:0.5 to 0.75 oz following final bed shaping and just prior to laying plastic. Do not transplant or seed for at least 7 d after treatment.

Cucumber Injury Symptoms from Sandea Applied POST

Sandea - Cucumber and Cantaloupe(Section 3 Label Soon)*Postemergence application can slow growth of vines

Cantaloupe seems to be more sensitive than cucumber

Cucumber Response to Sandea Applied Topical. TyTy, 2002.*% stunting*Cucumber was in the 3-leaf stage at time of application.

Cantaloupe Response to Sandea Applied Topical. Cordele, 2002.*% stunting*Cantaloupe was 6 inches at time of application.

However,

no documented yield loss at this time

Sandea - Tomato(Section 3 Label)0.5 to 0.75 oz following final bed shaping and just prior to laying plastic. Do not transplant for at least 7 d after treatment.

0.5 to 0.75 oz POST no sooner than 14 d after transplant. Directed application suggested.

Sandea - tomato(Section 3 Label)*5 trials conducted in GA during 2000, 2001, 2002.No visual injuryNo maturity effectNo yield effectNo grade effectCooperative work with Joel Hudgins, Decatur County.

Row Middle Applications(Section 3 Label)*Fruiting vegetables including pepper and eggplantCucurbit vegetable group including cantaloupes, melons, cucumbers, squash, pumpkins, watermelon*Label anticipated in near future.

Sandea for PRE Weed Control

common cockleburwild radishpigweedscommon ragweedcommon lambsquartersyellow nutsedge - suppression purple nutsedge - suppression2 to 3 weeks residual weed control

Sandea for POST Weed Control

1-3 inch 1-9 inchpassionflower cockleburredroot pigweed ragweedpokeweed velvetleafyellow and purple nutsedge heavy infestations may require sequential applications2 to 3 weeks residual weed control

Pigweed Control by Sandea0.67 oz PRE = 90 to 100% (tillage that disrupts herbicide layer will reduce control drastically)

0.5 to 0.75 oz POST = 85 to 100% for 0 to 2.5 inch tallcontrol goes downhill fast after 3 tall

Non-treated Control Sandea (0.5 oz/A) PREW1-00. Halosulfuron study with Ken Lewis in Cordele.

Non-treated Control Sandea (0.5 oz/A) POST 2-leaf watermelon, 2 PalmerW1-00. Halosulfuron study with Ken Lewis in Cordele.

Nutsedge Control by Sandea0.67 oz PRE = 65-80% for about 3 wk

less control if applied under plastic

0.5 to 0.67 oz POST = 85 to 95% plus some residual

Sandea PRENo herbicide

Non-treated control Sandea (0.5 oz/A) 2 WAP

If Sandea is applied under drought stress IT WILL NOT WORK

Sandea Label RecommendationsRow Middle:avoid unnecessary contact with cropApplication Info:apply in a minimum of 15 GPAdo not use more than 2 oz per acreuse non-ionic surfactant for POST weed controldo not apply using air assisted (air blast) systemsdo not apply through irrigationdo not apply when soil organophosphate insecticides are used

Carryover Read Label12 to 18 monthscabbage, radish, carrot, broccoli, cauliflower, collards, onion

24 monthsspinach

Tank Clean Out is EssentialColquitt County, 2002, Glenn Beard.

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.

2003 Vegetable Herbicide Update

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