PUMPKIN, WINTER SQUASH


Weed Problem   Chemical   Pounds Active Ingredient (AI)/Acre   Amount of Commercial Product/Acre   Remarks and Limitations

Emerged weeds before crop emergence   paraquat
(GRAMOXONE SL 2.0)
  0.5-1  
2-4 pt
  Apply before or after seeding but before crop emergence. Include 1 pt NIS/100 gal. RUP.

Preemergence   bensulide
(PREFAR 4E)
  5-6  
5-6 qt
  Apply to moderately dry, well-worked soil and incorporate 1-2 inches before seeding. 3-4 weeks' residual activity.

  clomazone
(COMMAND 3ME)
  0.25-0.5  
0.67-1.33 pt
  WINTER SQUASH, PROCESSING PUMPKINS: Apply to soil before transplanting or after seeding. Use lower rate on coarse soils. Apply to soil between rows of plastic before transplanting. Do not apply under plastic. Do not use on bright orange or pink C. maxima cultivars. Do not use on jack-o'-lantern pumpkins. Use in tank mix with ethafluralin. 45-day PHI.

  ethalfluralin
(CURBIT 3E)
  0.75-1.13  
2-3 pt
  PUMPKINS, WINTER SQUASH. Apply to soil surface after seeding, or between rows after transplanting. Needs 0.5 inch rain within 5 days for activation. Heavy rains may cause crop injury.

  ethalfluralin+
clomazone
(STRATEGY 2.1L)
  0.6-1.2+
0.19-0.375
 
3-6 pt
  Apply to soil surface after seeding, or as a banded spray between rows after transplanting. Needs 0.5 inch water within 2 days for activation. Use lower rate on light soil. 45-day PHI.

  fomesafen
(REFLEX 2L)
  0.125-0.25  
0.5-1 pt
  Apply after seeding pumpkin or winter squash. Use in tank mix with other pre herbicides. Apply up to 7 days before transplanting pumpkin or squash. Use only once in 2 years on same soil. 32 day PHI. See: www.farmassist.com to obtain Michigan 24c indemnification label. See label for rotation restrictions.

  s-metolachlor
(DUAL MAGNUM 7.62EC)
  0.95 - 1.26  
1 - 1.33 pt
  Apply as a broadcast spray over the rows or between rows after seeding, followed by 0.5 inch irrigation within 5 days. May reduce squash stand and stunt growth. Some squash types are sensitive to Dual. Do not apply over the plants. 30-day PHI. See: www.farmassist.com for Michigan 24C indemnified label.

Preemergence and postemergence broadleaves   halosulfuron
(SANDEA 75 WDG)
  0.023-0.047  
0.5-1 oz
  PREEMERGENCE: Apply after seeding and before cracking. Heavy rainfall or cool weather may cause crop injury after application. Fresh market squash maximum of 0.7 oz.

POSTEMERGENCE: Apply when crop has 2 or more leaves and before flowering. Include 0.25% NIS. Direct spray between rows if possible.

PROCESSING PUMPKIN AND SQUASH: Maximum 1 oz product/application.

Maximum 2 oz product/acre/year. 30-day PHI for all crops.

Postemergence grasses   clethodim
(SELECT MAX 0.97E)
  0.068-0.12  
9-16 fl oz
  Apply to actively growing grasses. Do not exceed 64 fl oz/acre/year. Include 0.25% NIS/acre. 14-day PHI.

  sethoxydim
(POAST 1.5E)
  0.19-0.28  
1-1.5 pt
  Apply to actively growing grasses. Include 1 qt COC/acre. Maximum total of 3 pt/acre/season. 14-day PHI.

Postemergence perennials   glyphosate
(ROUNDUP 4L)
  2-3  
2-3 qt
  Apply to emerged perennials before planting the crop. Wait 3 days before planting.