Rose Powdery Mildew
RECOMMENDATIONS FOR USE
For Control of Powdery Mildew Disease on Roses
GENERAL INFORMATION
New expanded M-Pede label includes control of powdery mildew disease on roses.
Curative mode of action controls both mildew spores and hyphal colonies.
Can be used to rescue infected plants.
Best results will be obtained when used in rotation with other fungicides.
Leaves an attractive lustre on plant foliage.
A single pesticide controls soft bodied insects, mites and powdery mildew.
Product has a minimal reentry interval (12 hours).
Biological Composition: M-Pede is composed of potassium salts of fatty acids which are extracted from vegetable and animal oils and fats. M-Pede's active ingredients biodegrade quickly following application and therefore have minimal impact on workers and nontarget organisms including predators and parasites.
Curative Mode of Action: M-Pede kills powdery mildew on contact by causing the hyphae and spores of the powdery mildew to quickly collapse, desiccate and die. An application of M-Pede to roses results in the death of both established hyphae and young spores, even before they become visible.
Healthy Foliage and Flowers: M-Pede applications kill existing mildew colonies. Young mildew infections will die and disappear. Even large, well established colonies will be diminished.
M-Pede applications leave foliage and flower buds clean and healthy with a natural lustre.
Use In an Integrated Program: M-Pede is curative against both mildew spores and hyphae.
M-Pede can be used to kill spores on plant surfaces before they germinate, or to arrest existing infections. Sublimated sulfur is a preventative fungicide and does not control existing mildew colonies. Sterol inhibitor fungicides (Eagle, Rubigan and Bayleton) are absorbed into plant tissues where they can prevent germination, and stop the growth of young mildew colonies. Optimal control of powdery mildew on roses is achieved when M-Pede is rotated with other fungicides.
Combine Insecticidal and Fungicidal Control: M-Pede controls mites, insects, and powdery mildew. Sprays of M-Pede which are directed to control powdery mildew will also significantly reduce insect and mite pests which are present.
INSTRUCTIONS FOR USE OF M-PEDE
1. Rates: Apply M-Pede at the rate of 1.5% (volume/volume) to control powdery mildew infection. A 1.5% (v/v) concentration is produced by adding 1.5 gallons of M-Pede to enough water to produce 100 gallons of spray [2 fl. oz. M-Pede/gallon of spray = 1.5% (v/v)].
2. Interval: Best results are obtained when an initial M-Pede application is followed up with a second application of M-Pede or another powdery mildew fungicide after 7-9 days. Rotate with other powdery mildew fungicides such as Pipron, to avoid making more than three successive M-Pede applications at intervals of 7 days or less.
3. Coverage: M-Pede kills powdery mildew on contact while in a spray solution. Direct spray to wet all plant surfaces, especially upper leaf surfaces, young stems and buds. Maximize coverage of plant surfaces with spray volumes of 200-400 gallons per acre. Avoid excessive runoff.
4. Tank Mixtures: Research trials have indicated that rotating applications of M-Pede with other powdery mildew fungicides, rather than tank mixing, resulted in superior control.
M-Pede can be tank mixed to enhance control with a wide range of insecticides, miticides and fungicides (other than for powdery mildew) including but not limited to Avid, Pentac Aquaflow, Mavrik Aquaflow, Chipco 26019, Tame, Orthene, and Pounce. Tank mixtures of M-Pede plus another insecticide, miticide or fungicide will effectively control powdery mildew as well as enhance the control of other diseases, insects and/or mites. Tank mix M-Pede at the rate of 1.5% with labeled rates of companion pesticides. Rates of M-Pede below 1.5% will not be fungicidal against powdery mildew. Comply with all label instructions for all products when tank mixing
M-Pede with other pesticides. Test tank mixtures on a small number of plants prior to making large scale applications in order to avoid plant injury. For more information of tank mixing refer to Mycogen's "Tank Mixes" technical bulletin JJ#1037, 5/93.
5. Uses With Sulfur: Do not tank mix M-Pede with sulfur, or treat roses with M-Pede which have received sprayable or dusting sulfur applications within 5 days prior to, or 5 days following the sulfur application.
Roses can be treated with sublimated sulfur using sulfur-heating-pots or similar devices before or after being treated with M-Pede. Wait 24 hours following an M-Pede application prior to sublimating sulfur. Allow sublimated sulfur time to settle prior to applying M-Pede.
6. Hard Water: Water is referred to as "hard" when it contains greater than 300 ppm of metal ions (calcium, magnesium, iron, etc.). M-Pede will bind with metal ions to form insoluble salts and precipitate if mixed with hard water which can result in reduced sprayability, unsightly spray residues, reduced pest control effectiveness, and/or increased potential for plant injury. Water hardness can be quickly assessed by using a simple jar test as described in Mycogen's technical bulletin entitled "Hard Water Testing" (MYCJJ#1003, 5/92).
Compatibility agents such as Tri-Ad 73, Buffer P.S., Unite, Spray-Aide or Latron AG44M can be used to improve performance in hard water. Always test spray solutions containing compatibility agents on a few plants prior to large scale applications when the applicator has limited experience with these spray materials on a particular crop.
7. Restrictions and Limitations (Guidelines to avoid plant or flower injury):
Test for plant sensitivity on a few plants prior to making large scale applications when the applicator has limited experience with M-Pede on a particular rose species.
Do not apply M-Pede to plants which are stressed by weather, insects, mites or disease.
Do not make more than 3 successive applications of M-Pede at intervals of 7 days or less.
Do not acidify M-Pede spray mixtures below pH 8.
Do not make tank mix combinations of M-Pede with various foliar nutrients, adjuvants such as spreader stickers or activators, alkaline based chelating agents (such as EDTA).
Do not tank mix M-Pede with sulfur, Chipco Alliete, Daconil or pesticides which contain metallic ions (such as: manganese, magnesium, iron, zinc) including but not limited to copper fungicides, and mancozeb.
Always read and carefully follow all product labels.
This bulletin contains new or supplemental instructions for the use of this product which may not appear on the package label. Mycogen provides this use information in accordance with Section 2(ee) of FIFRA.
M-Pede is a registered trademark of Mycogen Corporation. Bayleton is a registered trademark of Bayer AG, Germany. Bubigan is a registered trademark of DowElanco. Pipron is a registered trademark of SePRO Corporation. Pentac Aquaflow and Mavrik Aquaflow are registered trademarks of Sandoz, Ltd. Chipco and Alliete are registered trademarks of Rhone Poulenc Ag Company. Avid is a registered trademark of Merck and Co., Inc. Tame and Orthene are registered trademarks of Chevron Chemical Co. Pounce is a registered trademark of FMC Corporation. Daconil is a registered trademark of ISK Biotech Corporation. Eagle, Latron, and AG44M are registered trademarks of Rohm and Haas Company. Spray-Aide is a trademark of Miller Chemical Company. Unite is a registered trademark of Hopkins Agricultural Chemical Co. Buffer P.S. is a registered trademark of Helena Chemical Company.
M-Pede EPA Reg. No. 53219-6 MYC JJ# 2182 5/94
Rose Cultivar Sensitivity
M-Pede Insecticide and Fungicide has been tested and used on a wide range of rose cultivars grown under normal commercial conditions for a number of years. Phytotoxicity to roses has not been a problem when M-Pede is used according to label use instructions. However, Mycogen Corporation can not test M-Pede on all cultivars and under all conditions. Therefore, rose growers must test M-Pede on a small number of varieties prior to treating cultivars with which the applicator has limited experience.
The following specific rose cultivars have been evaluated under normal commercial greenhouse conditions and have shown acceptable tolerance to M-Pede when applied according to label use instructions and under normal, cultural practices:
Arianna Emblem Osiana Auralia Fire 'n Ice Prive Barbie Golden Emblem Preference Bridal Pink Kalina Royalty Bridal White Kyria Samantha Capella Laser Sassy Chantilly Lace Lovely Girl Silvia Coed Maiike Sonia Dallas Mary Devor Tropicana Darling Moonlight White Majesty Dolores Oklahoma
Test for plant sensitivity prior to making large scale applications to any rose cultivar when the applicator has limited experience treating with M-Pede. Test by spraying M-Pede on a few plants once or twice and observe treated foliage for several days following application for symptoms of plant sensitivity.
Refer to the M-Pede Insecticide label, appropriate supplemental labels and the Mycogen technical bulletin entitled "Rose Powdery Mildew" (JJ#2180 5/94) for specific use instructions.
Contact Mycogen's customer service department for the most current label and use instructions by calling 1 (800) 745-7476, or write to Mycogen at the address printed below.
This bulletin contains new or supplemental instructions for the use of this product which may not appear on the package label. Mycogen provides this use information in accordance with Section 2(ee) of FIFRA.
M-Pede is a registered trademark of Mycogen Corporation.
Always read and carefully follow all product labels.
M-Pede EPA Reg. No. 53219-6 MYC JJ# 2181 5/94