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Manage Variability

Map and Manage Variability

Map Variability
Map the most important physical, chemical and biological properties affecting yields throughout your field.

Property Soil EC/Texture Soil OM Soil pH Topography
Water-holding Capacity
Nutrient Storage
Nutrient Availablity
Infiltration and Drainage
Nitrogen Cycle
Herbicide Efficacy and Carryover Risk
Salinity Detection
Yield and Crop Imagery Interpretation

Manage Variability.

  • Make the most of every opportunity that good yield environments provide.
  • Overcome challenges with site-specific management and improvement.
Input Site-specific management objective Soil Role Factors
Seed population Match population to soil’s productive potential Plant higher populations in more highly productive soil, typically higher water-holding capacity areas with nominal topography. Reduce populations in lower producing areas of problematic soil Soil EC
Soil OM
Topography
Nitrogen Adjust applied N to account for needs and natural supply through mineralization Each 1% of organic matter mineralizes 20-30lbs of N during the season. Incorporating this N credit and inherent yield goals allow optimal N rates and timing. Soil EC
Soil OM
Topograpy
Nitrogen Scout and sample for in-season N loss and post-season carryover N can be lost through leaching and denitrification. Soil texture and topography are bigger drivers of this extremely mobile nutrient. Soil EC
Topography
Lime, Gypsum and Sulphur Adjust pH to ensure maximum nutrient availability. Identify areas of high & low pH for applying lime, gypsum & Sulphur. Soil pH
P, K other nutrients Determine nutrient needs from soil samples Choose sample locations based on each area of the field with differing nutrient use, loss and storage potential. Soil EC
Soil OM
Topography
Irrigation water Optimize soil moisture sensors Veris maps guide the positioning of soil moisture sensors to ensure that moisture data are representative of the field Soil EC
Soil OM
Topography
Irrigation water Determine water-holding capacity Veris maps guide the prescription for the variable-rate pivot to match water rates to soil capacity. Soil EC
Soil OM
Topography
Nematicides Identify how soil environment affects nematode activity Veris maps identify areas of increased nematode population Soil EC
Soil pH
Multi-hybrid/variety Match the right hybrid and variety to different soils. Veris maps guide planters equipped to plant different hybrids and varieties. Soil EC
Soil OM
Soil pH
Topography

Input: Seed Population
Objective: Match population to soil’s productive potential
Soil Role: Plant higher populations in more highly productive soil, typically higher water-holding capacity areas with nominal topography. Reduce populations in lower producing areas of problematic soil
Factors: Soil EC | Soil OM | Topography


Input: Nitrogen
Objective: Adjust applied N to account for needs and natural supply through mineralization
Soil Role: Each 1% of organic matter mineralizes 20-30lbs of N during the season. Incorporating this N credit and inherent yield goals allow optimal N rates and timing.
Factors: Soil EC | Soil OM | Topography


Input: Nitrogen
Objective: Scout and sample for in-season N loss and post-season carryover
Soil Role: N can be lost through leaching and denitrification. Soil texture and topography are bigger drivers of this extremely mobile nutrient.
Factors: Soil EC | Topography


Input: Lime, Gypsum and Sulphur
Objective: Adjust pH to ensure maximum nutrient availability.
Soil Role: Identify areas of high & low pH for applying lime, gypsum & Sulphur.
Factors: Soil pH


Input: P, K other nutrients
Objective: Determine nutrient needs from soil samples
Soil Role: Choose sample locations based on each area of the field with differing nutrient use, loss and storage potential.
Factors: Soil EC | Soil OM | Topography


Input: Irrigation water
Objective: Optimize soil moisture sensors
Soil Role: Veris maps guide the positioning of soil moisture sensors to ensure that moisture data are representative of the field
Factors: Soil EC | Soil OM | Topography


Input: Irrigation water
Objective: Determine water-holding capacity
Soil Role: Veris maps guide the prescription for the variable-rate pivot to match water rates to soil capacity.
Factors: Soil EC | Soil OM | Topography


Input: Nematicides
Objective: Identify how soil environment affects nematode activity
Soil Role: Veris maps identify areas of increased nematode population
Factors: Soil EC | Soil pH


Input: Multi-hybrid/variety
Objective: Match the right hybrid and variety to different soils.
Soil Role: Veris maps guide planters equipped to plant different hybrids and varieties.
Factors: Soil EC | Soil OM | Soil pH | Topography


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Stealth Ag
15618 US 52
Harmony, MN 55939
507-696-1358
stealthaginc@gmail.com

Stealth Ag South
47100 235th Trail
Chariton, IA 50049
641-203-0101
Jill.stealthag@gmail.com
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