Herbicide Recommendations for Corn: Soil Applied Grass and Broadleaf Herbicides (Preemergence Timing Only)

Pub 75: Guide to Weed Control > Corn > Herbicide Recommendations for Corn: Soil Applied Grass and Broadleaf Herbicides (Preemergence Timing Only)

Excerpt from 2010-11 Chapter 9, Publication 75, Guide to Weed Control, Order this publication

**Princep Nine-T**
Trade Name	Princep Nine-T	or Simadex	or Simazine 480
Active Ingredient	simazine	simazine	simazine
Formulation	90 WG	500 g/L	480 g/L
Rate per hectare (active)	1.35 to 2.25 kg/ha	1.6 to 4 kg/ha	1.6 to 4 kg/ha
Rate per hectare (product)	1.5 to 2.5 kg/ha	3.2 to 8 L/ha	3.4 to 8.3 L/ha
Rate per acre (product)	0.6 to 1 kg/ac	1.28 to 3.2 L/ac	1.36 to 3.32 L/ac

Precautions

These products are listed separately because of their widely differing rate ranges. In both cases the low rates should be used on sandy soils while the higher rates may be used on loams and clays.
Full season annual weed control can be expected except for crabgrass or fall panicum where infestations have built up.
Caution is advised when considering rates beyond 2.0 kg/ha (0.8 kg/ac) as soil residues may be high.

Crops