National FFA Agronomy CDE Written
Test 2025/2026 Exam Questions and
Answers | A+ Score Assured
Which of the following essential nutrients is considered a secondary
nutrient? - 🧠ANSWER ✔✔Calcium
From the following list, which oral LD50 value represents the most toxic
poison? - 🧠ANSWER ✔✔101 mg/kg
If you wanted to increase the CEC (cation exchange capacity) of your soil,
which of the following additives would you add to your soil? - 🧠ANSWER
✔✔Add organic matter (compost, manure, green manure crops, etc) to
your soil
, If a plant continues to produce more leaves and stems after it had begun to
flower, that growth habit is called which of the following: - 🧠ANSWER
✔✔indeterminate
If you were using a chlorophyll meter to determine the nutrient status of a
corn crop, which nutrient below is most likely to be correlated with the level
of chlorophyll? - 🧠ANSWER ✔✔N
If a 10-25 fertilizer costs $450/U.S. ton (2,000 lbs in a U.S. ton), how much
did you pay per pound of all the nutrients present (round to the nearest
penny)? - 🧠ANSWER ✔✔$0.50/lb
A farmer has all-inclusive production costs for his crop of $884 per acre.
The farmer sold the crop ahead of harvest season using a farmers contract
for $5.20 per bushel so how many bushels per acre does the farmer need
to achieve to cover just the production costs? - 🧠ANSWER ✔✔170 bushels
per acre
Which of the following is a pant available form of nitrogen? - 🧠ANSWER
✔✔NO3
A raceme is considered a type of what? - 🧠ANSWER ✔✔Inflorescence
Test 2025/2026 Exam Questions and
Answers | A+ Score Assured
Which of the following essential nutrients is considered a secondary
nutrient? - 🧠ANSWER ✔✔Calcium
From the following list, which oral LD50 value represents the most toxic
poison? - 🧠ANSWER ✔✔101 mg/kg
If you wanted to increase the CEC (cation exchange capacity) of your soil,
which of the following additives would you add to your soil? - 🧠ANSWER
✔✔Add organic matter (compost, manure, green manure crops, etc) to
your soil
, If a plant continues to produce more leaves and stems after it had begun to
flower, that growth habit is called which of the following: - 🧠ANSWER
✔✔indeterminate
If you were using a chlorophyll meter to determine the nutrient status of a
corn crop, which nutrient below is most likely to be correlated with the level
of chlorophyll? - 🧠ANSWER ✔✔N
If a 10-25 fertilizer costs $450/U.S. ton (2,000 lbs in a U.S. ton), how much
did you pay per pound of all the nutrients present (round to the nearest
penny)? - 🧠ANSWER ✔✔$0.50/lb
A farmer has all-inclusive production costs for his crop of $884 per acre.
The farmer sold the crop ahead of harvest season using a farmers contract
for $5.20 per bushel so how many bushels per acre does the farmer need
to achieve to cover just the production costs? - 🧠ANSWER ✔✔170 bushels
per acre
Which of the following is a pant available form of nitrogen? - 🧠ANSWER
✔✔NO3
A raceme is considered a type of what? - 🧠ANSWER ✔✔Inflorescence
