The Manitoba Pulse & Soybean Growers (MPSG) organization represents 3,800 farmers in Manitoba who grow soybeans, edible beans, peas and other pulses. MPSG’s mission is to provide research, production knowledge and market development support to Manitoba pulse and soybean farmers. This app is a production tool that delivers research results and resources directly into the hands of farmers and their agronomists, assisting them with production decisions.
The MPSG Bean App features six interactive tools. The Seeding Rate Calculator can be used to determine the economically optimum seeding rate for soybean. A soybean Plant Stand Assessor walks users through evaluating plant populations after seeding to see if their target plant stand has been reached. A soybean Growth Staging Guide provides a picture and description of each growth stage and can be used to ensure timely management decisions. The soybean Yield Estimator outlines the key parameters that contribute to grain yield, allowing users to estimate yield prior to harvest. The soybean Harvest Loss Assessor guides users in an exercise to quantify harvest losses at the header and behind the combine to identify settings that need adjustment. The White Mould Risk Assessment helps users understand the environment and management decisions affecting white mould development in edible beans.
MPSG does not validate results and takes no responsibility for the accuracy if these results. The MPSG Bean App was developed with assistance from MPSG Production Specialists. Funding for App developments was been provided in part by Growing Forward 2. For more information, visit www.manitobapulse.ca
Fungicide Decision Tool for Managing White Mould In Dry Beans
To assess the risk of white mould infection and aid in your fungicide application decision, complete this worksheet for your dry bean field(s) at the V-4 stage or 1-2 weeks prior to fungicide timing.
Step 1 Weather Conditions Experienced Prior to Flowering
Weekly rainfall from planting to pre-flowering (weekly average up to V-4)
Average daily high temperature from planting to pre-flowering (weekly average up to V-4)
Humidity (%) or hours of dew or free water on foliage (weekly average up to V-4)
Step 2 Weather Expected During Flowering
Forecasted rainfall expected during flowering (weekly average between V-4 and R-4 stages)
Forcasted daily high temperature expected pre-flowering (weekly average between V-4 and R-4 stages)
Step 3 Final Management Factors
Dry bean crop rotation and/or other susceptible hosts included in rotation (ex. canola, sunflower)
Susceptible hosts and/or fungal apothecia observed nearby (less than 2km) before flowering (R-1)
Timing and amount of nitrogen fertilizer applied
Plant spacing, effects on canopy density, and microclimatic conditions favoring white mould
Varietal susceptility (based on upright growth habit and/or genetic resistance to white mould)
Your Score
16
What Does This Mean?
> 30
-
High risk
20-30
-
Moderate risk
< 20
-
Reduced risk
This risk score takes into account environmental and management factors that contribute to white mould in dry beans. Other factors to consider in your fungicide application decision are yield potential, crop value, fungicide efficacy and cost of application.
