Irrigation & Water
View HubCalculate reference evapotranspiration using the FAO-56 Penman-Monteith equation for irrigation planning
Calculate crop water needs from ET₀, crop coefficient, and irrigation efficiency
Calculate how long to run your irrigation system based on flow rate, area, and target application depth
Calculate friction head loss in irrigation pipes using the Hazen-Williams equation
Calculate required pump power from flow rate and total dynamic head for irrigation systems
Calculate emitter count, total flow, and lateral length for drip irrigation layout
Calculate effective rainfall using the USDA-SCS method to determine irrigation reduction
Calculate irrigation scheduling from soil properties, root depth, and daily crop water use
Calculate seasonal irrigation water and energy costs per hectare or acre
Related Guides
How to Calculate Crop Water Requirements
Learn how to use ET₀ and crop coefficients to determine exactly how much water your crops need throughout the growing season.
Irrigation Scheduling: When and How Much to Water
Master irrigation timing using soil moisture, MAD thresholds, and crop water use to prevent both over- and under-watering.
Designing a Drip Irrigation System
Step-by-step guide to designing a drip irrigation system including emitter spacing, pipe sizing, and pump selection.
Soil & Fertilizer
View HubConvert fertilizer application rates between lb/acre and kg/ha with nutrient breakdown and elemental equivalents
Calculate fertilizer product quantities to meet target N-P-K rates with multi-product blending and over-application warnings
Calculate agricultural lime requirement using SMP, Adams-Evans, or Mehlich buffer methods with CCE adjustment
Calculate gypsum amendment rate for sodic soil reclamation from ESP or SAR, CEC, and soil properties
Calculate compost application rate from target nitrogen, compost properties, and first-year availability factor
Model year-by-year soil organic matter trajectory from cover crop and compost inputs with first-order decay kinetics
Calculate micronutrient product quantities with safety warnings for iron, zinc, boron, manganese, and copper
Related Guides
Understanding NPK Fertilizer Labels
Decode fertilizer bag labels, convert between oxide and elemental forms, and calculate how much product you need for your field.
How to Correct Soil pH with Lime
Understand buffer pH methods, CCE adjustments, and how to calculate the right lime application rate for your soil.
Building Soil Organic Matter
Learn how cover crops, compost, and reduced tillage work together to build soil organic matter over time.
Crop Planning
View HubEstimate theoretical crop yield from plant population, fruit count, and average weight — outputs tonnes/ha, kg/ha, bu/acre, and lb/acre.
Calculate revenue lost to field harvest losses with color-coded severity and ASABE benchmark comparison.
Score your 5-crop rotation for disease break, nitrogen fixation benefit, and weed diversity using family-based analysis.
Track cumulative growing degree days from daily min/max temperatures and estimate days to maturity for your crop.
Calculate product per tank load and total product needed for foliar sprays, growth regulators, and fertilizer applications.
Calculate germination-adjusted seeding rates, weight per acre or hectare, and bags needed — with crop-specific defaults.
Convert row and in-row spacing to plant population — or reverse-calculate required spacing from a target stand.
Related Guides
Calculating Seed Rates and Plant Populations
Learn how thousand kernel weight, germination rates, and row spacing affect your seeding decisions and final plant stand.
Understanding Growing Degree Days for Crop Management
Learn how GDD works, base temperatures by crop, and how to use growing degree day tracking for planting and harvest decisions.
Crop Rotation Planning: Building a Healthier Rotation
Learn disease break principles, nitrogen fixation benefits, and weed suppression strategies for building a better crop rotation.
Pest & Spray
View HubCalculate pesticide dilution rates, product per tank, and total product needed for your field area.
Track restricted entry intervals and pre-harvest intervals with countdown timers and compliance status.
Evaluate whether pest treatment is economically justified using pest counts, economic thresholds, and ROI analysis.
Assess spray drift risk using wind speed, nozzle type, buffer distance, and weather conditions.
Related Guides
Understanding Spray Application Rates
Learn how to read pesticide labels, calculate dilution rates, calibrate your sprayer, and determine the right product quantity for your field.
Restricted Entry and Pre-Harvest Intervals Explained
Understand REI and PHI requirements, why they matter for worker safety and food safety, and how to track compliance.
Integrated Pest Management: When to Spray
Learn IPM principles, economic thresholds, scouting techniques, and how to make data-driven spray decisions.
Livestock & Feed
View HubBuild feed rations with multiple ingredients and see nutrient totals on a dry-matter basis with CP, TDN, and NDF breakdown.
Estimate daily dry matter intake based on species, body weight, and production level using NRC standards.
Calculate feed conversion ratio and cost per kg of gain with benchmark comparison for your species.
Estimate bales needed for winter feeding based on herd size, feeding days, bale type, and waste factor.
Calculate daily, monthly, and annual water requirements by species, head count, and temperature range.
Related Guides
Understanding Dry Matter and Feed Rations
Learn why dry matter basis matters for comparing feeds, how to read feed test results, and how to build a basic ration for your livestock.
Feed Conversion Efficiency: Measuring and Improving FCR
Understand feed conversion ratio, what affects it, how to track it, and species benchmarks for evaluating your herd performance.
Planning Hay and Water Needs for Your Herd
Estimate winter feed requirements, choose the right bale type, account for waste, and plan water supply by species and season.
Greenhouse
View HubEstimate seasonal greenhouse heating costs from cover material U-value, glazing area, heating degree days, and fuel type.
Calculate required ventilation CFM or m³/h for your greenhouse based on volume and air exchange rate.
Calculate greenhouse return on investment, payback period, and year-by-year cumulative cash flow with a break-even chart.
Calculate CO2 enrichment annual costs, break-even yield increase requirement, and net ROI range for greenhouse operations.
Related Guides
Greenhouse Heating Costs: How to Estimate Your Winter Energy Bill
Learn how heating degree days, cover material U-values, and fuel type determine your greenhouse seasonal heating costs.
Is a Greenhouse Worth It? Calculating ROI and Payback Period
How to calculate greenhouse return on investment, typical payback periods by greenhouse type, and what to expect from different crop strategies.
CO2 Enrichment for Greenhouses: Costs, Benefits, and Break-Even Analysis
Why plants respond to elevated CO2, which crops benefit most, equipment options, and how to calculate your break-even yield increase.
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