Dry Beans

Year-Round IPM Program for Dry Beans

(Reviewed: 12/08, Updated 12/08)

These practices are recommended for a monitoring-based IPM program that reduces environmental quality problems related to pesticide use. Links take you to information on how to monitor, forms to use, and management practices. Track your progress through the year with the annual checklist form.

Water quality becomes impaired when pesticides move off-site and into water. Air quality becomes impaired when volatile organic compounds move into the atmosphere. Each time a pesticide application is considered, review the Pesticide Application Checklist at the bottom of this page for information on how to minimize environmental quality problems.

This program covers the major pests of blackeye, common, and lima beans in the Central Valley. Information on additional pests is included in the Dry Beans Pest Management Guideline.

Preplant

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Survey weeds in the current crop.

Manage weeds before planting within and adjacent to the field.

Select field considering:
  • Pest history (including current crop):
    • Weeds
    • Diseases
    • Insects
    • Nematodes
  • Surrounding crops and vegetation.
  • Soil conditions and water quality.
  • Crop rotation.
Select the cultivar. Consider treated seed for fields with a history of:
Calculate nitrogen budget and inoculate seed with appropriate Rhizobium bacteria.
Prepare the field for planting, including laser leveling to correct drainage and runoff problems as needed.

Planting to stand establishment

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Consider seed handling and planting techniques that:
  • Reduce cracking and splitting of seeds.
  • Ensure appropriate planting depth, maximizing germination rate and reducing risk of seedling diseases.
Inspect seedlings for damage. Manage if needed according to the Dry Beans Pest Management Guidelines.
Manage irrigation.
Survey weeds 4 weeks after planting.

Cultivate beans to remove weeds, as necessary.

Calculate nitrogen budget.

Vegetative growth to flower bud

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Look for pests or their damage on a weekly basis. Manage if needed according to the Dry Beans Pest Management Guidelines.

Flower bud through bloom

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Start sweep net sampling for lygus bugs at the early flower bud stage.
  • Check fields twice weekly.

Record results (example form PDF).

While sweeping for lygus bugs, look for other pests or damage on a weekly basis. Manage if needed according to the Dry Beans Pest Management Guidelines.

Pod fill

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Continue sweep net sampling for lygus bugs.

Manage if needed according to the Dry Beans Pest Management Guidelines.

Continue looking for pests or their damage on a weekly basis. Manage if needed according to the Dry Beans Pest Management Guidelines.
Survey weeds before harvest.

Remove nightshade plants if necessary.

Harvest

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Adjust combine to reduce mechanical damage and bean loss.
Exercise care when threshing to ensure moisture content of seed below 15%.

Postharvest

Mitigate pesticide usage to minimize air and water contamination.
What should you be doing at this time?
Carry out sanitation practices in the field to reduce the spread of:
  • Weeds
  • Diseases
  • Nematodes
  • Insects

Pesticide application checklist

When planning for possible pesticide applications in an IPM program, review and complete this checklist to consider practices that minimize environmental and efficacy problems.

  • Choose a pesticide from the UC IPM Pest Management Guidelines for the target pest considering:
  • Consider water management practices (PDF) that reduce pesticide movement off-site:
    • Choose sprayers and application procedures that keep pesticides on target.
    • Identify and take special care to protect sensitive areas (for example, waterways or riparian areas) surrounding your application site.
    • Review and follow label for pesticide handling, storage, and disposal guidelines.
    • Check and follow restricted entry intervals (REI) and preharvest intervals (PHI).
    • After an application is made, record application date, product used, rate, and location of application. Follow up to confirm that treatment was effective.
    • Install an irrigation recirculation or storage and tail water return system. (See Reducing Runoff from Irrigated Lands: Tailwater Return Systems (PDF).
    • Limit irrigation to amount required using soil moisture monitoring and evapotranspiration (ET).
    • Consider vegetative filter strips (PDF) or ditches.
    • Install sediment traps.
    • Use polyacrylamide (PAM) tablets in furrows to prevent off-site movement of sediments.
    • Redesign inlets and outlets into tailwater ditches to reduce erosion.
  • Consider management practices that reduce air quality problems.
    • When possible, choose pesticides that are not in emulsifiable concentrate (EC) form which release volatile organic compounds (VOCs). VOCs react with sunlight to form ozone, a major air pollutant.

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Statewide IPM Program, Agriculture and Natural Resources, University of California
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