Soybeans: Phytophthora Root Rot (Phytophthora sojae)

Excerpt from Chapter 3, Field Crop Protection Guide, Order this publication

Table of Contents

1. Integrated Pest Management Options
   • Seed Treatment
     • metalaxyl-M – Apron XL LS
     • metalaxyl – Allegiance FL, Apron FL
2. Related links...

Integrated Pest Management Options

Select soybean varieties that have both specific resistance (Rps genes such as 1K and 1C) and good partial resistance (tolerance) to all races of Phytophthora. Consult with your seed company for variety profiles. Primarily controlled through resistant varieties. Losses are greatest in cold, wet, clay soils. Minimize soil compaction and remove excess moisture through increased drainage. A small amount of tillage will help warm soil and increase surface drainage. Rotate with corn and wheat. Plant when soil temperatues are above 13°C (55°F).

Seed Treatment

Treat seed with metalaxyl or metalaxyl-M (higher rate).

Comments
Do not use in hopper-box, planter-box, slurry-box, or other non-commercial seed treatment applications at or immediately before planting. Do not graze or feed livestock on seeded area for 4 weeks after planting. Read label for information regarding resistant strains of fungus.

Comments
Do not graze or feed livestock on seeded area for 4 weeks after planting.

| Top of Page |

Related links...

• Agronomy Guide for Field Crops - Publication 811
  • Soybeans: Phtophthora Root Rot
• Diseases
• Soybeans

| Top of Page |