Soybean Yield Estimate Calculator
This calculator helps you estimate the potential yield of your soybean crop based on key field and management factors. Understanding your estimated yield is crucial for planning, marketing, and optimizing your farming operations.
Estimate Your Soybean Yield
Enter the total area of the field in acres.
Average number of soybean plants expected per acre at harvest.
Average number of soybean pods expected on each plant.
Average number of beans found within each pod.
The standard weight of a bushel of soybeans (e.g., 60 lbs).
Adjusts for moisture content (e.g., 0.9 for 13% moisture). Use 1.0 for dry basis.
Estimated Soybean Yield
0 Bushels/AcrePods per Acre: 0
Beans per Acre: 0
Total Beans: 0
Total Weight: 0 lbs
Formula Used:
Estimated Yield (Bushels/Acre) = (Plants/Acre * Pods/Plant * Beans/Pod) / Beans per Bushel
*Beans per Bushel is calculated from Test Weight and adjusted by Moisture Factor.*
Estimated Yield (Bushels/Acre) = (Plants/Acre * Pods/Plant * Beans/Pod) / Beans per Bushel
*Beans per Bushel is calculated from Test Weight and adjusted by Moisture Factor.*
Projected Yield vs. Actual Input (Illustrative)
What is a Soybean Yield Estimate?
{primary_keyword}
is a crucial metric for farmers, agribusinesses, and researchers. It represents the anticipated amount of soybeans a given area of land will produce, typically measured in bushels per acre. Accurately estimating soybean yield allows for better financial planning, risk management, and resource allocation before and after the growing season.Who should use it? This estimate is vital for farmers to forecast their harvest, determine storage needs, and plan sales strategies. It's also used by agronomists to assess the effectiveness of different farming practices, by commodity traders to predict market supply, and by researchers studying crop performance. Understanding your potential {primary_keyword} helps in making informed decisions about inputs, crop rotation, and overall farm profitability.
Common misconceptions: A common misconception is that yield is solely determined by planting density. While important, factors like weather, soil health, pest pressure, and management practices play equally significant roles. Another misunderstanding is that a simple calculation based on seed count guarantees the final yield; real-world conditions introduce variability.
Soybean Yield Estimate Formula and Mathematical Explanation
The {primary_keyword} is calculated by breaking down the soybean production process into smaller, quantifiable units. The core idea is to estimate the total number of beans produced and then convert that into bushels, considering standard weights and moisture content.
Step-by-step derivation:
- Calculate Total Pods per Acre: This is found by multiplying the expected number of plants per acre by the average number of pods per plant.
Pods per Acre = Plants per Acre × Pods per Plant - Calculate Total Beans per Acre: Next, we estimate the total number of individual soybean beans produced on the acre.
Beans per Acre = Pods per Acre × Beans per Pod - Determine Standard Beans per Bushel: A standard bushel of soybeans is typically 60 pounds. However, we need to account for moisture content. A conversion factor is applied to the standard test weight to represent the actual weight of a bushel at a specific moisture level.
Effective Beans per Bushel = (Test Weight [lbs/bushel] / Beans per Pod) × Conversion Factor*Note: This step is often simplified in practice by directly estimating yield in pounds or bushels using empirical data. Our calculator uses a direct bean count approach converted to bushels.* - Estimate Yield in Bushels per Acre: Finally, we divide the total estimated beans per acre by the number of beans that make up one bushel (at standard moisture and test weight).
Estimated Yield (Bushels/Acre) = Beans per Acre / (Beans per Pod × [Test Weight / 60 lbs/bushel] × Conversion Factor)*A more direct calculation derived from common agricultural metrics is often:
Estimated Yield (Bushels/Acre) = (Plants/Acre * Pods/Plant * Beans/Pod) / (Beans per Bushel at Standard Moisture)
Where Beans per Bushel is derived from the test weight and adjusted for moisture. For simplicity and direct calculation in our tool, we focus on the bean count first.*
Simplified Calculation implemented in the calculator:
1. Beans per Acre = Plants per Acre * Pods per Plant * Beans per Pod
2. Total Pounds per Acre = Beans per Acre * (Test Weight [lbs/bushel] / 60 lbs/bushel) * Conversion Factor * (60 lbs/bushel)
*This simplifies to:* Total Pounds per Acre = Beans per Acre * Test Weight [lbs/bushel] * Conversion Factor / 60 lbs/bushel
3. Yield (Bushels/Acre) = Total Pounds per Acre / (Test Weight [lbs/bushel] / 60 lbs/bushel)
*Which simplifies to:* Yield (Bushels/Acre) = Total Pounds per Acre * 60 / Test Weight [lbs/bushel]
*Substituting Total Pounds per Acre:*
Yield (Bushels/Acre) = (Beans per Acre * Test Weight [lbs/bushel] * Conversion Factor / 60 lbs/bushel) * 60 lbs/bushel / Test Weight [lbs/bushel]
*Further Simplification:*
Yield (Bushels/Acre) = Beans per Acre * Conversion Factor / 60 lbs/bushel (This assumes the 'Beans per Pod' indirectly accounts for the weight aspect when combined with test weight)
Let's use the most direct approach from common formulas:
Yield (Bushels/Acre) = (Plants/Acre * Pods/Plant * Beans/Pod) / (Beans per Standard Bushel)
Beans per Standard Bushel = (60 lbs/bushel) / (Average weight per bean)
Average weight per bean = (Test Weight [lbs/bushel] / 60 lbs/bushel) / (Beans per Bushel at Standard Moisture)
**Revised Calculator Logic:**
Total Beans per Acre = Plants per Acre * Pods per Plant * Beans per Pod
Pounds per Acre = Total Beans per Acre * (Test Weight / 60) * Conversion Factor * 60
Pounds per Acre = Total Beans per Acre * Test Weight * Conversion Factor
Yield (Bushels/Acre) = Pounds per Acre / (Test Weight / 60) (This calculates yield based on 60lb/bushel standard)
Yield (Bushels/Acre) = (Total Beans per Acre * Test Weight * Conversion Factor) / (Test Weight / 60)
Yield (Bushels/Acre) = Total Beans per Acre * Conversion Factor * 60
Let's re-evaluate the core units. We need beans per bushel.
Weight per Bean (lbs) = Test Weight [lbs/bushel] / Beans per Bushel (at standard moisture)
Beans per Bushel (at standard moisture) = Test Weight [lbs/bushel] / Weight per Bean (lbs)
*This implies we need an estimate for weight per bean, or use a simplified yield formula.*
Common Simplified Yield Formula:
Yield (Bushels/Acre) = (Plants/Acre * Pods/Plant * Beans/Pod) / (Approximate Beans per Bushel)
Let's use the provided inputs to derive "Beans per Bushel".
1 Bushel = 60 lbs. We need to find how many beans make up 60 lbs *after* moisture adjustment.
Total weight produced per acre (adjusted) = (Plants/Acre * Pods/Plant * Beans/Pod) * (Test Weight / 60) * Conversion Factor
Yield (Bushels/Acre) = Total weight produced per acre (adjusted) / 60 lbs/bushel
Yield (Bushels/Acre) = [(Plants/Acre * Pods/Plant * Beans/Pod) * (Test Weight / 60) * Conversion Factor] / 60
Variables Table:
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Field Area | Total size of the soybean field | Acres | 1 – 10,000+ |
| Plants Per Acre | Number of soybean plants expected at harvest | Plants/Acre | 80,000 – 180,000 |
| Pods Per Plant | Average number of pods on each plant | Pods/Plant | 20 – 60+ |
| Beans Per Pod | Average number of seeds within each pod | Beans/Pod | 2.0 – 3.5 |
| Test Weight | Weight of a standard volume (bushel) of soybeans | lbs/bushel | 50 – 62 |
| Moisture Adjustment Factor | Corrects for non-standard moisture content. 1.0 is typically ~13% moisture. Higher moisture increases weight but reduces quality/value potential. | Unitless | 0.85 – 1.05 |
| Yield Estimate | Projected soybean harvest | Bushels/Acre | 30 – 80+ |
Practical Examples (Real-World Use Cases)
Example 1: Average Conditions
A farmer has a 150-acre field with conditions conducive to good growth. They expect:
- Field Area: 150 Acres
- Plants Per Acre: 135,000
- Pods Per Plant: 45
- Beans Per Pod: 2.9
- Test Weight: 60 lbs/bushel
- Moisture Adjustment Factor: 0.95 (slightly wet beans)
Using the calculator, the estimated yield is approximately 61.5 Bushels/Acre for this field. This projection helps the farmer secure contracts based on expected volume and plan for harvest logistics.
Example 2: Challenging Conditions
Another farmer is dealing with a dry spell and some pest pressure on their 80-acre field. Their expectations are lower:
- Field Area: 80 Acres
- Plants Per Acre: 110,000
- Pods Per Plant: 30
- Beans Per Pod: 2.5
- Test Weight: 57 lbs/bushel
- Moisture Adjustment Factor: 0.90 (drier beans)
The calculator estimates a yield of approximately 38.8 Bushels/Acre. This lower estimate signals the need to adjust marketing strategies, potentially focus on cost-saving measures, and prepare for a smaller overall harvest.
How to Use This Soybean Yield Estimate Calculator
- Input Field Area: Enter the total acreage of the specific soybean field you want to estimate.
- Estimate Plant Population: Input the anticipated number of soybean plants per acre at harvest. This can be estimated based on planting rates, germination success, and early-season stand counts.
- Estimate Pods Per Plant: Determine the average number of pods you expect each soybean plant to produce. This is influenced by plant health, nutrient availability, and environmental conditions.
- Estimate Beans Per Pod: Input the average number of seeds found within each pod. This can vary significantly based on genetics and stress factors.
- Enter Test Weight: Provide the expected test weight in pounds per bushel. This reflects the density and size of the soybeans.
- Apply Moisture Adjustment: Use the moisture adjustment factor to account for the water content of the beans, which affects their weight and quality. A factor of 1.0 is standard for ~13% moisture.
- Calculate: Click the "Calculate Yield" button.
Reading Results: The calculator will display the primary result: Estimated Yield in Bushels per Acre. It also shows intermediate values like pods per acre, beans per acre, total beans, and total weight, providing a more detailed breakdown. The chart offers a visual comparison of key input factors against yield.
Decision-Making Guidance: Use these estimates to refine your marketing plan, assess profitability, determine if crop insurance adjustments are needed, and plan for the next growing season. Compare estimates across different fields to identify areas of strength and weakness in your farming practices.
Key Factors That Affect Soybean Yield Results
While the calculator provides a solid estimate, numerous real-world factors can influence the actual soybean yield. Understanding these helps in refining your input estimates for better accuracy and in implementing strategies to maximize your harvest:
- Weather Patterns: Rainfall (amount and timing), temperature extremes (heat or frost), and sunlight significantly impact plant growth, pod set, and seed fill. Drought during critical growth stages is particularly detrimental.
- Soil Health and Fertility: Soil type, organic matter content, pH level, and nutrient availability (especially phosphorus, potassium, and nitrogen) are foundational. Healthy soils support robust root systems and efficient nutrient uptake, directly boosting yield potential.
- Pest and Disease Pressure: Insects (like soybean aphids or pod feeders) and diseases (such as sudden death syndrome or white mold) can damage plants, reduce pod development, and decrease seed quality, thereby lowering the final yield. Integrated pest management is key.
- Weed Competition: Weeds compete with soybeans for essential resources like sunlight, water, and nutrients. Early and effective weed control is critical, especially during the early vegetative and reproductive stages, to prevent significant yield loss.
- Genetics (Variety Selection): The chosen soybean variety plays a crucial role. Different cultivars have varying yield potentials, disease resistance, maturity groups, and adaptability to specific environments. Selecting the right variety for your conditions is paramount.
- Planting Practices: Factors like planting date, seeding rate, row spacing, and planting depth all influence seedling establishment, plant vigor, and ultimately, the final stand count and yield. Optimizing these practices supports higher yield potential.
- Management Practices: Crop rotation, tillage methods, irrigation (if applicable), and timely application of inputs (fertilizers, pesticides) contribute to overall crop health and yield. Sustainable practices often lead to more consistent yields over time.
- Harvest Timing and Efficiency: Harvesting too early or too late, or inefficient combine settings, can lead to yield loss through shattering or poor grain quality. Ensuring optimal harvest conditions maximizes the yield that reaches the bin.
Frequently Asked Questions (FAQ)
Q1: How accurate is a soybean yield estimate?
A: The accuracy depends heavily on the precision of the input data. Estimates made mid-season are generally less accurate than those made closer to harvest, as more variables can change. However, it provides a valuable projection.
Q2: What's the difference between estimated yield and actual yield?
A: Estimated yield is a projection based on specific inputs and formulas. Actual yield is the amount harvested after all growing season factors (weather, pests, etc.) have influenced the crop's development.
Q3: How do I get better estimates for my inputs?
A: Keep detailed records from previous years, consult with local agronomists, observe crop health throughout the season, and consider using scouting tools and soil testing.
Q4: Can I use this calculator for other grains?
A: No, this calculator is specifically designed for soybeans, using formulas and units relevant to their production. Different grains have different measurement standards and growth characteristics.
Q5: What does "Test Weight" really mean for yield?
A: Test weight is a measure of soybean density and quality. Higher test weights often correlate with better seed fill and can indirectly influence the calculation of yield in bushels, which are standardized by weight.
Q6: Should I use the moisture adjustment factor?
A: Yes, it's crucial for an accurate estimate, especially if your beans are harvested at moisture levels significantly different from the standard (typically 13%). Higher moisture increases weight but can reduce the grain's market value and storage stability.
Q7: How does this relate to profit?
A: Estimated yield is a key component of profitability. Multiplying the estimated yield (bushels/acre) by the expected market price per bushel and then subtracting production costs gives a projected profit margin.
Q8: What is a good yield for soybeans?
A: A "good" yield varies greatly by region, soil type, and management. In the US Midwest, average yields often range from 40-60 bushels per acre, but many farmers achieve yields of 70-80+ bushels per acre with optimal conditions and practices.
Related Tools and Internal Resources
Results copied to clipboard!
var areaAcreageInput = document.getElementById("areaAcreage");
var plantsPerAcreInput = document.getElementById("plantsPerAcre");
var podsPerPlantInput = document.getElementById("podsPerPlant");
var beansPerPodInput = document.getElementById("beansPerPod");
var testWeightBushelInput = document.getElementById("testWeightBushel");
var conversionFactorInput = document.getElementById("conversionFactor");
var areaAcreageError = document.getElementById("areaAcreageError");
var plantsPerAcreError = document.getElementById("plantsPerAcreError");
var podsPerPlantError = document.getElementById("podsPerPlantError");
var beansPerPodError = document.getElementById("beansPerPodError");
var testWeightBushelError = document.getElementById("testWeightBushelError");
var conversionFactorError = document.getElementById("conversionFactorError");
var resultsContainer = document.getElementById("resultsContainer");
var mainResultSpan = document.getElementById("mainResult");
var podsPerAcreResultSpan = document.getElementById("podsPerAcreResult");
var beansPerAcreResultSpan = document.getElementById("beansPerAcreResult");
var totalBeansResultSpan = document.getElementById("totalBeansResult");
var totalWeightResultSpan = document.getElementById("totalWeightResult");
var chart = null;
var yieldChartCanvas = document.getElementById('yieldChart');
var chartContainer = document.getElementById('chartContainer');
var defaultValues = {
areaAcreage: 100,
plantsPerAcre: 140000,
podsPerPlant: 40,
beansPerPod: 2.8,
testWeightBushel: 60,
conversionFactor: 0.9
};
function validateInput(input, errorElement, label, minValue, maxValue) {
var value = parseFloat(input.value);
var isValid = true;
errorElement.innerText = "";
errorElement.classList.remove('visible');
if (isNaN(value)) {
errorElement.innerText = "Please enter a valid number.";
isValid = false;
} else if (value <= 0 && label !== "Moisture Adjustment Factor") { // Allow 0 for some metrics if applicable, but generally positive
errorElement.innerText = label + " must be positive.";
isValid = false;
} else if (value maxValue) {
errorElement.innerText = label + " cannot exceed " + maxValue + ".";
isValid = false;
}
else if (label === "Moisture Adjustment Factor" && (value 1.5)) {
errorElement.innerText = label + " typically ranges from 0.85 to 1.05.";
isValid = false;
}
if (isValid) {
input.style.borderColor = "#ccc";
} else {
input.style.borderColor = "red";
}
return isValid;
}
function updateChart(podsPerAcre, beansPerAcre, estimatedYield) {
if (!yieldChartCanvas) return;
var ctx = yieldChartCanvas.getContext('2d');
// Destroy previous chart instance if it exists
if (chart) {
chart.destroy();
}
var dataSeries1 = []; // Pods per Acre
var dataSeries2 = []; // Beans per Acre
var yieldData = []; // Estimated Yield (for x-axis reference)
// Generate sample data points based on the current calculation
// We'll simulate a range around the current input values to show a trend
var basePlants = parseFloat(plantsPerAcreInput.value);
var basePods = parseFloat(podsPerPlantInput.value);
var baseBeans = parseFloat(beansPerPodInput.value);
var baseTestWeight = parseFloat(testWeightBushelInput.value);
var baseConvFactor = parseFloat(conversionFactorInput.value);
var baseArea = parseFloat(areaAcreageInput.value);
var samplePoints = 5;
var step = 0.1; // Small increment for simulating changes
for (var i = 0; i < samplePoints; i++) {
var factor = 1 + (i – Math.floor(samplePoints / 2)) * step;
var currentPlants = basePlants * factor; // Simulate changes in plants
var currentPods = basePods * factor; // Simulate changes in pods
var currentBeans = baseBeans * factor; // Simulate changes in beans per pod
var currentPodsPerAcre = currentPlants * currentPods;
var currentBeansPerAcre = currentPodsPerAcre * currentBeans;
// Calculate yield based on the simplified formula used in the calculator for consistency
var currentYield = (currentPlants * currentPods * currentBeans * baseTestWeight * baseConvFactor) / (60 * 60);
dataSeries1.push(currentPodsPerAcre.toFixed(0));
dataSeries2.push(currentBeansPerAcre.toFixed(0));
yieldData.push(currentYield.toFixed(1));
}
chart = new Chart(ctx, {
type: 'bar', // Changed to bar for better comparison of intermediate vs final
data: {
labels: yieldData, // Using estimated yield as labels for context
datasets: [{
label: 'Pods per Acre',
data: dataSeries1,
backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color
borderColor: 'rgba(0, 74, 153, 1)',
borderWidth: 1
}, {
label: 'Beans per Acre',
data: dataSeries2,
backgroundColor: 'rgba(40, 167, 69, 0.6)', // Success color
borderColor: 'rgba(40, 167, 69, 1)',
borderWidth: 1
}]
},
options: {
responsive: true,
maintainAspectRatio: false,
scales: {
y: {
beginAtZero: true,
title: {
display: true,
text: 'Count'
}
},
x: {
title: {
display: true,
text: 'Estimated Yield (Bushels/Acre)'
}
}
},
plugins: {
tooltip: {
callbacks: {
label: function(context) {
var label = context.dataset.label || '';
if (label) {
label += ': ';
}
if (context.parsed.y !== null) {
label += context.parsed.y;
}
return label;
}
}
}
}
}
});
}
function calculateYield() {
var allValid = true;
allValid &= validateInput(areaAcreageInput, areaAcreageError, "Field Area", 0, 100000);
allValid &= validateInput(plantsPerAcreInput, plantsPerAcreError, "Plants Per Acre", 0, 500000);
allValid &= validateInput(podsPerPlantInput, podsPerPlantError, "Pods Per Plant", 0, 100);
allValid &= validateInput(beansPerPodInput, beansPerPodError, "Beans Per Pod", 0, 10);
allValid &= validateInput(testWeightBushelInput, testWeightBushelError, "Test Weight", 30, 70);
allValid &= validateInput(conversionFactorInput, conversionFactorError, "Moisture Adjustment Factor", 0.5, 1.5);
if (!allValid) {
resultsContainer.style.display = "none";
chartContainer.style.display = "none";
return;
}
var areaAcreage = parseFloat(areaAcreageInput.value);
var plantsPerAcre = parseFloat(plantsPerAcreInput.value);
var podsPerPlant = parseFloat(podsPerPlantInput.value);
var beansPerPod = parseFloat(beansPerPodInput.value);
var testWeightBushel = parseFloat(testWeightBushelInput.value);
var conversionFactor = parseFloat(conversionFactorInput.value);
var podsPerAcre = plantsPerAcre * podsPerPlant;
var beansPerAcre = podsPerAcre * beansPerPod;
var totalBeans = beansPerAcre * areaAcreage;
// Revised calculation based on common agricultural formulas for bushels
// Total weight per acre (adjusted for moisture and test weight) =
// (Plants/Acre * Pods/Plant * Beans/Pod) * (Test Weight / 60) * Conversion Factor
// Yield (Bushels/Acre) = Total weight per acre / 60
// Yield = [(Plants * Pods * Beans) * (TestWeight / 60) * ConversionFactor] / 60
var estimatedYield = (plantsPerAcre * podsPerPlant * beansPerPod * testWeightBushel * conversionFactor) / 60;
var totalWeightLbs = estimatedYield * testWeightBushel;
mainResultSpan.innerText = estimatedYield.toFixed(1) + " Bushels/Acre";
podsPerAcreResultSpan.innerText = "Pods per Acre: " + podsPerAcre.toFixed(0);
beansPerAcreResultSpan.innerText = "Beans per Acre: " + beansPerAcre.toFixed(0);
totalBeansResultSpan.innerText = "Total Beans (Est.): " + totalBeans.toLocaleString();
totalWeightResultSpan.innerText = "Total Weight (Est.): " + totalWeightLbs.toLocaleString('en-US', { maximumFractionDigits: 0 }) + " lbs";
resultsContainer.style.display = "block";
// Update chart
if (chartContainer && yieldChartCanvas) {
chartContainer.style.display = "block";
updateChart(podsPerAcre, beansPerAcre, estimatedYield);
}
}
function resetCalculator() {
areaAcreageInput.value = defaultValues.areaAcreage;
plantsPerAcreInput.value = defaultValues.plantsPerAcre;
podsPerPlantInput.value = defaultValues.podsPerPlant;
beansPerPodInput.value = defaultValues.beansPerPod;
testWeightBushelInput.value = defaultValues.testWeightBushel;
conversionFactorInput.value = defaultValues.conversionFactor;
// Clear errors
areaAcreageError.innerText = ""; areaAcreageError.classList.remove('visible');
plantsPerAcreError.innerText = ""; plantsPerAcreError.classList.remove('visible');
podsPerPlantError.innerText = ""; podsPerPlantError.classList.remove('visible');
beansPerPodError.innerText = ""; beansPerPodError.classList.remove('visible');
testWeightBushelError.innerText = ""; testWeightBushelError.classList.remove('visible');
conversionFactorError.innerText = ""; conversionFactorError.classList.remove('visible');
// Reset styles
areaAcreageInput.style.borderColor = "#ccc";
plantsPerAcreInput.style.borderColor = "#ccc";
podsPerPlantInput.style.borderColor = "#ccc";
beansPerPodInput.style.borderColor = "#ccc";
testWeightBushelInput.style.borderColor = "#ccc";
conversionFactorInput.style.borderColor = "#ccc";
// Hide results and clear them
resultsContainer.style.display = "none";
mainResultSpan.innerText = "0 Bushels/Acre";
podsPerAcreResultSpan.innerText = "Pods per Acre: 0";
beansPerAcreResultSpan.innerText = "Beans per Acre: 0";
totalBeansResultSpan.innerText = "Total Beans: 0";
totalWeightResultSpan.innerText = "Total Weight: 0 lbs";
if (chart) {
chart.destroy();
chart = null;
}
chartContainer.style.display = "none";
}
function copyResults() {
var resultText = "Soybean Yield Estimate:\n";
resultText += "————————\n";
resultText += "Estimated Yield: " + mainResultSpan.innerText + "\n";
resultText += podsPerAcreResultSpan.innerText + "\n";
resultText += beansPerAcreResultSpan.innerText + "\n";
resultText += totalBeansResultSpan.innerText + "\n";
resultText += totalWeightResultSpan.innerText + "\n";
resultText += "\nKey Assumptions:\n";
resultText += "- Field Area: " + areaAcreageInput.value + " Acres\n";
resultText += "- Plants Per Acre: " + plantsPerAcreInput.value + "\n";
resultText += "- Pods Per Plant: " + podsPerPlantInput.value + "\n";
resultText += "- Beans Per Pod: " + beansPerPodInput.value + "\n";
resultText += "- Test Weight: " + testWeightBushelInput.value + " lbs/bushel\n";
resultText += "- Moisture Adjustment Factor: " + conversionFactorInput.value + "\n";
// Use navigator.clipboard for modern browsers
if (navigator.clipboard) {
navigator.clipboard.writeText(resultText).then(function() {
showCopyNotification();
}).catch(function(err) {
console.error("Failed to copy: ", err);
fallbackCopyTextToClipboard(resultText);
});
} else {
fallbackCopyTextToClipboard(resultText);
}
}
function fallbackCopyTextToClipboard(text) {
var textArea = document.createElement("textarea");
textArea.value = text;
textArea.style.position = "fixed"; // Avoid scrolling to bottom
textArea.style.left = "-9999px";
textArea.style.top = "-9999px";
document.body.appendChild(textArea);
textArea.focus();
textArea.select();
try {
var successful = document.execCommand('copy');
if(successful) showCopyNotification();
} catch (err) {
console.error('Fallback: Oops, unable to copy', err);
}
document.body.removeChild(textArea);
}
function showCopyNotification() {
var notification = document.getElementById("copyNotification");
notification.className = "show";
setTimeout(function(){ notification.className = notification.className.replace("show", ""); }, 3000);
}
// Initial calculation on load if values are present
document.addEventListener("DOMContentLoaded", function() {
// Check if chart.js is loaded (it's not included here, assuming it might be globally available or added via another script)
// If chart.js is NOT included, the updateChart function will fail gracefully.
// For a self-contained file, you'd need to include chart.js.
// For this exercise, we'll assume its absence and var it fail gracefully if not present.
// If you intend to run this standalone, you MUST include Chart.js library.
// Example of how to include Chart.js if needed:
// var script = document.createElement('script');
// script.src = 'https://cdn.jsdelivr.net/npm/chart.js';
// script.onload = function() { console.log('Chart.js loaded'); };
// document.head.appendChild(script);
calculateYield(); // Perform an initial calculation
});
// Add event listeners for real-time updates
areaAcreageInput.addEventListener("input", calculateYield);
plantsPerAcreInput.addEventListener("input", calculateYield);
podsPerPlantInput.addEventListener("input", calculateYield);
beansPerPodInput.addEventListener("input", calculateYield);
testWeightBushelInput.addEventListener("input", calculateYield);
conversionFactorInput.addEventListener("input", calculateYield);