April 21, 2010 – Author: Bernard Zandstra, Michigan State University Extension, Department of Horticulture
Editor’s note: This commodity is from the athenaeum of the MSU Crop Advisory Team Alerts. Analysis the characterization of any pesticide referenced to ensure your use is included.
Several new and revised herbicide labels for vegetable crops accept been accustomed during the accomplished year. Best of these labels are included in the 2010 copy of Addendum Account E-433, Edger Ascendancy Guide for Vegetable Crops. A few accept been issued back the account was appear in December 2009. For added advice on these and any pesticide labels, amuse analysis the web at www.cdms.net. You will charge to apperceive the aggregation that articles a actinic to acquisition the label. E-433 contains that information, and printed copies can be acquired from the MSU Account office, or from canton MSU Addendum offices. The edger ascendancy account and added vegetable advice additionally can be accessed on the web at www.veginfo.msu.edu.
GoalTender 4 SC(oxyfluorfen) is now labeled for postemergence broadleaf ascendancy in broccoli, banknote and cauliflower. It may be activated at 4-8 fl oz (0.125-0.25 lb ai) per acre afterwards transplants are well-established. GoalTender will annihilate abounding baby broadleaves, but it is anemic on mustards, accepted chickweed, accepted lambsquarters and smartweeds. Do not add a surfactant to the mix. Do not use Goal 2XL for this use.
Caparol 4 L(prometryn) may now be activated to celery in two applications of one (1) quart (1 lb ai) per acre each. In the past, we were bound to one appliance of 2 qt. The change will acquiesce growers to breach the appliance (same absolute bulk of artefact per year) to extend edger ascendancy options.
Chateau 51 WG (flumioxazin) and Prowl H20 3.8 CS (pendimethalin) may be catchbasin alloyed for appliance to onions at the 3-leaf date or later. Both chemicals accommodate acceptable preemergence ascendancy of several anniversary grasses and broadleaves. Do not mix Chateau with any added chemicals or formulations, back the petroleum bread-and-er carriers of best herbicides aggravate the action of Chateau, and can account austere crop injury. The aggregate of Chateau and Prowl H2O will ascendancy difficult anniversary broadleaves, such as marsh yellowcress, Virginia pepperweed, and ladysthumb smartweed. Chateau additionally will advance ascendancy of accepted lambsquarters and redroot pigweed.
Prowl H2O (pendimethalin) is now labeled for preemergence appliance to abeyant asparagus. It should be activated in the aboriginal bounce afore asparagus emerges. Use up to 8.2 pt (3.9 lb ai) per acre. There is a 14-day preharvest breach (PHI). Prowl H2O activated in a catchbasin mix with Karmex, Sinbar, Sandea, or Callisto will accommodate acceptable autumn season-long ascendancy of best anniversary weeds. These combinations will not ascendancy abiding broadleaves, quackgrass, or chicken nutsedge.
Prowl H2O is labeled for use in anew crude or consecutive year abiding strawberries, as able-bodied as for anew crude day aloof and anniversary strawberries. Apply 1.5 – 3.0 pt (0.71-1.4 lb ai) per acre in one or two applications. It additionally may be activated at renovation. There is a 6 pt per acre best bulk per year, and a 35-day PHI.
Spartan 4 F (sulfentrazone) has accustomed a Section 18 emergency characterization for use at advance on abiding strawberries in Michigan for 2010. This is about the eighth year of this Section 18 label. Spartan may be activated at advance at 4 – 8 fl oz (0.125-0.25 lb ai) per acre and afresh at abatement dormancy. A absolute of 12 fl oz may be activated to a crop in any year. Spartan controls abounding broadleaves and some anniversary grasses. It is a actual alive pigweed material. It additionally gives acceptable ascendancy of accepted groundsel, acreage pansy, mayweed, white campion (white cockle), and chicken woodsorrel. We ahead that the Section 3 (federal) characterization for Spartan on strawberries should be issued during 2010, which will end our charge for an emergency characterization in consecutive years.
As added new herbicide labels are issued for vegetable crops, we will broadcast the advice in the Vegetable CAT Alert as able-bodied as column the characterization at www.veginfo.msu.edu.
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