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careful of tank mixing. Tani< mixing increases tfie risk 

 of injury . If tank mixes are not on the label, you as- 

 sume all risk. Test a few plants first. If horticultural 

 oils are applied too soon before or after another pes- 

 ticide, the likelihood of phytotoxicity is increased. 

 Don't apply aerosols less than 20 inches from the 

 plant, at temperatures above 85 degrees, or when the 

 foliage is wet. Do not overdose. Don't try to save 

 money by buying agricultural formulations not regis- 

 tered for the greenhouse. Pesticides are more likely 

 to cause phytotoxicity under greenhouse conditions. If 

 it's labelled for greenhouse use, the manufacturer has 

 tested it there. Also, an unlabeled use is illegal. 

 Read the label for a list of plants which are sensitive 

 to that formulation. Use the pesticide only for plants 

 listed on the label. 



Rotate pesticide classes, but use the same spray for 

 the whole life cycle of the target pest. If the target 

 has a 3-week life cycle, use the same chemical for 3 

 weeks, providing you are getting reasonable control. 



Aphids: Orthene, Margosan-O, Dycarb, Attain, Talstar, 

 DuraGuard, Dursban, Decathalon, Knox-Out, Fulex 

 DDVP, Thiodan, Preclude, Tame, Mavrik, Sunspray 

 Ultrafine Spray Oil, Marathon, M-Pede, Olympic Insec- 

 ticidal Soap, Safer Insecticidal Soap, Enstar II, 

 Methiocarb, Dibrom, Fulex Nicotine, Oxamyl, Astro, 

 Pyrethrum, X-Clude, Resmethrin, and Fulex Dithio 

 Smoke. 



Fungus gnats; Orthene, Azatin, Gnatrol, Talstar, 

 DuraGuard, Decathlon, Knox-Out, Precision, Sunspray 

 Ultrafine Spray Oil, Olympic Insecticidal Soap, Enstar 

 II, Exhibit, Scanmask, Oxamyl, Astro, Pyrethrum, 

 X-Clude, and Resmethrin. 



Mealybugs: Orthene, Margosan-O, Azatin, Dycarb, At- 

 tain, Talstar, DuraGuard, Dursban, Decathlon, Knox- 

 Out, Fulex DDVP, Tame, Sunspray Ultrafine Spray Oil, 

 Marathon, M-Pede, Olympic Insecticidal Soap, Safer 

 Insecticidal Soap, Enstar II, Dibrom, Oxamyl, Astro, 

 Pyrethrum, X-Clude, and Resmethrin. 



Spider mites: Avid, Orthene, Attain, Talstar, Dura- 

 Guard, Knox-Out, Fulex DDVP, Kelthane, Pentac, 

 Tame, Mavrik, Sunspray Ultrafine Spray Oil, M-Pede, 

 Olympic Insecticidal Soap, Safer Insecticidal Soap, 

 Grandslam, Methiocarb, Dibrom, Oxamyl, Pyrethrum, 

 X-Clude, and Resmethrin. 



Thrips: Orthene, Margosan-O, Azatin, Dycarb, Talstar, 

 DuraGuard, Dursban, Decathlon, Knox-Out, Preclude, 

 Mavrik, Marathon, M-Pede, Olympic Insecticidal Soap, 

 Safer Insecticidal Soap, Fulex Nicotine, Oxamyl, 

 X-Clude, Resmethrin, and Fulex Dithio Smoke. 

 Whiteflies: Orthene, Margosan-O, Azatin, Dycarb, 

 Talstar, Attain, Dursban, Decathlon, Knox-Out, Fulex 

 DDVP, Thiodan, Precision, Preclude, Tame, Mavrik, 

 Sunspray Ultrafine Spray Oil, Marathon, M-Pede, Olym- 

 pic Insecticidal Soap, Safer Insecticidal Soap, Enstar II, 

 Methiocarb, Dibrom, Oxamyl, Astro, Pyrethrum, 

 X-Clude, Resmethrin, and Fulex Dithio Smoke. 

 Caterpillars: Orthene, Azatin, Margosan-O, Dipel, MVP, 

 Dycarb, Attain, Talstar, DuraGuard, Dursban, Deca- 

 thalon, Knox-Out, Tame, Mavrik, Olympic Insecticidal 

 Soap, Safer Insecticidal Soap, Dibrom. Astro, Pyre- 

 thrum, X-Clude, and Resmethrin. 



Many of you will use Marathon because it should give 

 8-12 weeks of control. However, too little or too much 

 water will reduce its effectiveness. It is a systemic 

 and it must translocate through the roots. The 

 biologicals such as the parasitic nematodes (Exhibit, 

 Scanmask) and Baci//HS \h\Ar'\nq'\ens\s (Gnatrol) often re- 

 quire frequent application to be effective against fun- 

 gus gnat. Parasitic wasps and predators don't work 

 well in a bedding plant situation where there are 

 many pests to be controlled, and pesticides sprays for 

 a non-host insect will also kill the beneficials. 



All pesticides listed here are recommended contin- 

 gent upon continued NH registration and no signifi- 

 cant changes in labelling. Don't hesitate to contact 

 your local county agricultural Extension educator or 

 myself if you have any questions. Good luck and I 

 hope all of you have a profitable year. 



Dr. Stanley R. Smer is ExtewsioH SpedaWsi, EMtomo/o^i/, 

 Udiversiti/ o\ New Hampshire, phone number 603-862-1159. 



Laughton's 

 Garden Center Inc. 



Cal Laughton, Florist 



NURSERY STOCK • ANNUALS 



PERENNIALS 

 FERTILIZERS • INSECTICIDES 



Distributors of Nursery Overwintering Blankets 



WHOLESALE AND RETAIL NURSERY 



Tel. 1-800-633-0159 



155-165 Princeton Blvd. 



No. Chelmsford, MA 01863 



The Plantsman 



