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Questions and Answers
How many acres of prime land were in Iowa in 1977?
How many acres of prime land were in Iowa in 1977?
Based on the data provided, roughly how many acres of land in Iowa are not used for farming purposes?
Based on the data provided, roughly how many acres of land in Iowa are not used for farming purposes?
What is the approximate percentage increase in the value of Iowa's farmland over the past 20 years?
What is the approximate percentage increase in the value of Iowa's farmland over the past 20 years?
Which crop contributed the most calories to the 2023 harvest according to the presented data?
Which crop contributed the most calories to the 2023 harvest according to the presented data?
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According to the provided data, how many acres of land are used for growing local food crops in Iowa?
According to the provided data, how many acres of land are used for growing local food crops in Iowa?
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If cellulostic ethanol becomes common, how many calories (in trillions) would be added to the total harvested calories in Iowa, according to the provided estimates?
If cellulostic ethanol becomes common, how many calories (in trillions) would be added to the total harvested calories in Iowa, according to the provided estimates?
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What is the approximate number of farms in Polk County, Iowa?
What is the approximate number of farms in Polk County, Iowa?
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According to the information provided, what percentage of Iowa's principal farm operators are women?
According to the information provided, what percentage of Iowa's principal farm operators are women?
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What is the estimated average yield of Iowa soybeans in 2084 AD, according to Jerry Miller's analysis?
What is the estimated average yield of Iowa soybeans in 2084 AD, according to Jerry Miller's analysis?
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According to the provided data, what is the approximate percentage of Iowa adults with a Bachelor's degree or higher?
According to the provided data, what is the approximate percentage of Iowa adults with a Bachelor's degree or higher?
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What does the 'r2' value of 0.92 in the linear equation for corn yield signify?
What does the 'r2' value of 0.92 in the linear equation for corn yield signify?
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Which of the following factors directly influences Iowa's corn yield, according to the given information?
Which of the following factors directly influences Iowa's corn yield, according to the given information?
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Based on the provided information, what is the estimated number of people that Iowa's crops could feed if all crops were consumed by humans and everyone was a vegetarian eating 2,000 calories per day?
Based on the provided information, what is the estimated number of people that Iowa's crops could feed if all crops were consumed by humans and everyone was a vegetarian eating 2,000 calories per day?
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Flashcards
Iowa Land in Farms
Iowa Land in Farms
33,359,000 acres of Iowa land is used for farming.
Corn Production Calories (2023)
Corn Production Calories (2023)
Corn grain yields approximately 2.35 * 10^14 calories.
Soybean Production Calories (2023)
Soybean Production Calories (2023)
Soybeans contribute around 6.6 * 10^13 calories.
Total Farm Land Value
Total Farm Land Value
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Primeland in Iowa (1977)
Primeland in Iowa (1977)
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Pigs Produced Annually
Pigs Produced Annually
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Average Value/Acre
Average Value/Acre
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Urban vs Rural Population
Urban vs Rural Population
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Calories from Iowa's crops
Calories from Iowa's crops
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Population supported by Iowa's crops
Population supported by Iowa's crops
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Education level in Iowa
Education level in Iowa
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Corn yield prediction formula
Corn yield prediction formula
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Soybean yield prediction
Soybean yield prediction
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Study Notes
Iowa Agriculture and Land Use
-
Land Use (acres):
- Total land: 36,016,500 acres
- Land in farms: 33,359,000 acres
- Cropland: 25,968,200 acres
- Pastureland: 3,104,500 acres
- Woodland: 2,358,600 acres
- House lots, ponds, roads: 897,100 acres
- Land in CRP/WRP: 1,030,600 acres
-
Prime Farmland:
- Iowa's prime farmland (USDA definition) decreased slightly between 1977 and 2012. - 1977: 19,127,000 acres; 5.55% of US total - 2012: 18,399,900 acres; 5.83% of US total
-
Crop Production Calories:
- Calculated 2023 total Calories produced: 383 trillion calories
- Major crops & calorie contributions:
- Corn grain: approximately 2.35 * 1014 calories
- Soybeans: approximately 6.6 * 1013 calories
- Forage/pasture: approximately 8.0 * 1013 calories
- Small Grains: approximately 4.2 * 1011 calories
- Local food crops: approximately 1.6 * 1012 calories
Iowa Demographics and Economics
-
Population:
- Approximately 3 million people in Iowa
- About 2 million live in urban areas and 1 million in rural areas
- Adult educational attainment: 26.8% with bachelor's degrees or higher
-
Agriculture Industry:
- Livestock production:
- Approximately 60 million pigs annually
- Approximately 16.5 billion eggs annually (from 60 million laying hens)
- Farm numbers:
- Approximately 85,000-90,000 farms in Iowa (with significant drop from 184,000 in 1960)
- Operator gender: 93% men, 7% women
- Farms per county approximately 500 to 1,000
- Livestock production:
-
Farmland Value:
- Total farmland value: approximately $200 billion (nearly twice that of 20 years ago)
- Average value/acre: $11,835 (a 600% increase from 20 years ago)
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Crop Value:
- Annual crop value: $15 to $40 billion (past 20 years)
- Specific values for forage, small grains, and local food crops are difficult to estimate
-
Farmland-Population correlation:
- Farm numbers don't correlate with population in a county
Crop Yield Trends
-
Corn Yield Prediction:
- Using historical data, projected Iowa corn yield in 2084 is approximately 350 or 313 bushels per acre
- Calculation based on exponential growth since 1935, assuming 1.88 (year)-93 equation.
-
Soybean Yield Prediction:
- Predicted Iowa soybean yield in 2084 using 1960-2015 data: Approximately 85 bushels per acre.
-
GMO Impact:
- Corn Yield: GMO technology introduction has increased yields by approximately 2.2 bushels per acre per year with an approximately 56% certainty, w/o changing the yield growth slope compared to 1935.
Additional Notes
- Feeding Potential of Iowa Crops:
- Crops could feed 525 to 60-80 million people (depending on dietary assumptions)
Studying That Suits You
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Description
Test your knowledge on Iowa's agricultural landscape with this quiz. Answer questions about land use, farming statistics, and educational attainment related to farming in Iowa. It's a great way to see how much you know about the state's farming trends and crop yields from 1977 to 2023.
