Crop Science
Most widely grown U.S. row crop by acreage.
What is corn.
Proportion of sand, silt, and clay.
What is soil texture.
GPS system that keeps tractors on straight lines.
What is auto‑steer.
Small green insect that feeds on soybean leaves.
What are soybean aphids.
U.S. state leading in corn production.
What is Iowa.
Legume that fixes nitrogen with rhizobia
What are soybeans.
Nutrient represented by “P” in N‑P‑K.
What is phosphorus.
Map showing yield variation across a field
What is a yield map.
Weed known for glyphosate resistance.
What is waterhemp (or Palmer amaranth).
Crop used for ethanol, feed, and sweeteners.
What is corn.
Small grain used for malting and brewing.
What is barley.
Ideal pH range for most crops.
What is 6.0–7.0.
Technology allowing different rates across a field
What is variable‑rate technology.
Wheat disease causing yellow striping.
What is leaf streak.
Growing the same crop year after year.
What is monocropping.
Oilseed with bright yellow flowers
What is canola.
Soil component with most nutrient‑holding capacity.
What is organic matter.
Index measuring plant greenness and vigor.
What is NDVI.
Rhizome‑spreading weed tough in no‑till.
What is Canada thistle.
Livestock consuming most soybean meal.
What are poultry.
C4 crop known for drought tolerance.
What is sorghum.
Downward movement of nutrients with water.
What is leaching.
Imagery detecting stress before it’s visible.
What is multispectral imagery.
Pathogen type causing most leaf spots.
What is a fungus.
One of the top three soybean‑producing countries.
What is Brazil (or U.S. or Argentina).