Iowa's Agricultural Capacity Overview

<p>Decompostion by microorganisms during respiration (D)</p> Signup and view all the answers

<p>Silty clay loam (B)</p> Signup and view all the answers

<p>The interaction between clay particles and organic matter (D)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>A horizon (C)</p> Signup and view all the answers

<p>60% (D)</p> Signup and view all the answers

<p>36 million acres (C)</p> Signup and view all the answers

<p>Polk County (A)</p> Signup and view all the answers

<p>115,000 farms (A)</p> Signup and view all the answers

<p>11-12% (D)</p> Signup and view all the answers

<p>35 trillion gallons (D)</p> Signup and view all the answers

<p>28% (D)</p> Signup and view all the answers

<p>85,000 farms (A)</p> Signup and view all the answers

<p>8-10% (D)</p> Signup and view all the answers

<p>1,000 (A)</p> Signup and view all the answers

<p>68.4 (C)</p> Signup and view all the answers

<p>Mollisols (C)</p> Signup and view all the answers

<p>100-150 million people worth (C)</p> Signup and view all the answers

<p>196 bu/acre for corn, 57 bu/acre for soybeans (C)</p> Signup and view all the answers

<p>0.5% (B)</p> Signup and view all the answers

<p>Urban development (A)</p> Signup and view all the answers

<p>6 tons (A)</p> Signup and view all the answers

<p>300 years (D)</p> Signup and view all the answers

<p>13,000 years ago (C)</p> Signup and view all the answers

<p>Wheat (B)</p> Signup and view all the answers

<p>High prices lead to more resource use (A)</p> Signup and view all the answers

<p>Land degradation (C)</p> Signup and view all the answers

<p>Grapes and Olives (C)</p> Signup and view all the answers

<p>500 years (D)</p> Signup and view all the answers

<p>500 m3 (B)</p> Signup and view all the answers

<p>Egypt (A)</p> Signup and view all the answers

<p>Erosion from the Loess Plateau (C)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>The Dust Bowl (A)</p> Signup and view all the answers

<p>Land degradation can lead to the decline or collapse of civilizations (D)</p> Signup and view all the answers

<p>Iowa and the USA rely heavily on agriculture, making them vulnerable to land degradation. (C)</p> Signup and view all the answers

<p>Sustainable agricultural practices (A)</p> Signup and view all the answers

<p>Overuse of groundwater for irrigation (B)</p> Signup and view all the answers

<p>All of the above (D)</p> Signup and view all the answers

<p>The rise of the Inca Empire (B)</p> Signup and view all the answers

<p>Land degradation can have significant consequences for civilizations' sustainability and survival. (D)</p> Signup and view all the answers

<p>100 tons/acre (C)</p> Signup and view all the answers

Iowa is located at 42°N latitude and 94°W longitude.

Iowa's mean annual temperature is around 50°F.

Iowa receives about 35 inches of precipitation annually.

Iowa has a human population of about 3.2 million.

Approximately 2/3 of Iowans live in urban settings.

Poverty rate in Iowa is between 11-12% for both rural and urban areas.

Farms cover approximately 33 million acres in Iowa.

Iowa has around 85,000 farms as of 2020.

A reduction in the capacity of the land to support plant productivity.

A measure of how well soil supports plant growth and productivity.

Key functions of soil that support healthy plant development.

Organic material in soil that contributes to fertility and structure.

The size and distribution of soil particles: sand, silt, and clay.

The arrangement of soil particles into aggregates or clumps.

The percentage of soil volume that is pore space, allowing water and air flow.

A type of soil found in Eastern Iowa, with silt loam texture and good drainage.

Rome was founded about 2800 BP, marking significant agricultural development.

The Roman Empire lasted approximately 500 years until 476 AD.

Olive trees can produce for over 1,500 years; typically live 500 years.

Erosion contributed to sediment and flooding issues, affecting agriculture.

Technological advancements in agriculture migrated westward, including crops and tillage methods.

Romans shifted to growing grapes and olives due to soil degradation.

China faces severe erosion, losing arable land, with significant history of soil conservation efforts.

Overuse and sedimentation cause the Yellow River to fail to empty into the sea during dry seasons.

Industrial and urban water usage has a higher economic impact than agricultural use, by a factor of 70.

China's reliance on food imports increases as domestic production declines despite official positions.

1 ton of grain requires approximately 500 m³ of water, supporting 3 adult vegetarians annually.

Land degradation from erosion and salinization threatens agricultural viability and civilization stability.

The Dust Bowl of the 1930s illustrated severe soil erosion and degradation in the Great Plains.

Salinization and water scarcity threaten agriculture in California's Imperial Valley.

Civilizations rise with agriculture; increased knowledge leads to productivity but also land degradation.

8-10% of Iowa's 85,000 farms generate over $1 million in revenue.

Iowa loses about 1,000 traditional farms per year due to consolidation.

A fraction of lost traditional farms are converted to small area specialty farms.

Iowa can feed 60 to 80 million people with its food production.

Iowa has about 0.5% of the world’s arable land.

Historically, Iowa's crop yield growth is about 1% per year.

Iowa averages 6 tons of soil erosion per acre from farmland.

Iowa's soils are rated with an average CSR2 value of 68.4.

Mollisols are a type of fertile soil common in Iowa, known as 'black soils.'

There is a concern for land degradation threatening Iowa's productivity.

Mesopotamia, between the Tigris and Euphrates, is known as the cradle of agriculture.

Agriculture in Mesopotamia began approximately 13,000 years ago.

Crops included barley, wheat, and lentils, among others.

High rates of erosion were noted in ancient times, indicating environmental issues.