FLOWERS AND ORNAMENTALS 

 Gladiolus, Dutch Iris, Narcissus 



(1) Pre -emergence. - -For control of annual grasses and broadleaved weeds: 2,4-D 

 at 2 to 4 pounds, 2,4-DES at 3 to 6 pounds, CIPC at 4 to 8 pounds, DNBP at 4 to 8 

 pounds, TCA at 6 to 10 pounds, combinations of CIPC at 4 pounds with 2,4-DES at 3 

 pounds or 2,4-D at 2 pounds per acre, or combinations of TCA at 6 pounds with 

 2,4-DES at 3 pounds or 2,4-D at 2 pounds in 20 to 40 gallons of water per acre applied 

 just prior to emergence. Effective for 30 to 60 days or more. 



(2) Post-emergence . --2,4-DES at 3 to 4 pounds in 20 to 40 gallons of water per acre 

 applied 30 to 60 days after pre -emergence treatment but before weeds begin to emerge 

 will usually extend period of weed control until harvest. Amine salts of 2,4-D at rates 

 up to 1 pound per acre may be used as a post-emergence spray if applied before leaf 

 blades open. 2,4-DES is less likely to cause injury than 2,4-D as a post-emergence 

 spray. 



Established Evergreen and Deciduous Plants 



(1) For control of annual grasses and broadleaved weeds in rows of coniferous 

 transplants and deciduous stocks: 2,4-DES at 3 to 6 pounds or CIPC at 4 to 8 pounds in 

 20 to 40 gallons of water per acre applied as a basal directed spray. For maximum 

 effectiveness, both herbicides should be applied prior to weed emergence or to clean 

 cultivated soil. Also herbicides should be applied so only a minimum of spray comes 

 in contact with bases of plants. 



(2) For control of annual weeds between rows:DNBPat 2 pounds or PCP at 4 pounds 

 In 50 gallons of aromatic oil per acre. A low-pressure sprayer with a hooded boom 

 should be used to prevent spray drift from coming In contact with nursery crops. 



Comments and precautions . --Perennial weeds are not controlled by these treat- 

 ments. 



Seedbeds and Transplant Beds 



(1) For control of most annual and perennial weeds: Methyl bromide at 1 pound per 

 100 square feet applied under a plastic gas-proof cover. Methyl bromide does not 

 persist In soil, and plantings may be made safely within 72 hours after removing 

 plastic cover. Other soil fumlgants and steam sterilization may also be used effectively 

 to control weeds In seedbeds and transplant beds. 



(2) For control of most weeds germinating In upper 4 Inches of soil: Calcium 

 cyanamlde at 50 to 75 pounds per 1,000 square feet applied to surface of soil and 

 worked Into the upper 2 to 3 Inches of soil. Seeding or transplanting after using calcium 

 cyanamlde should be delayed for 3 to 6 weeks to avoid residual toxic effects of the 

 treatment. 



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