Crop Production and Management Flashcards
6 cards from real Agronomy practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Crop Production and Management flashcards as text
What is the primary purpose of crop rotation in agronomic systems?
Answer: Break pest and disease cycles and improve soil health
Rotating crops disrupts the life cycles of pathogens, insects, and weeds that are host-specific, while diversifying soil nutrient demands.
Which soybean growth stage is most critical for final yield determination?
Answer: R5 (beginning seed fill)
The R5 stage (beginning seed fill) is most critical because seed size and number are being determined, directly setting final yield.
What does the term 'vernalization' mean in crop production?
Answer: Cold temperature requirement for flowering
Vernalization is the process by which certain crops require exposure to extended cold temperatures before they can flower and set seed.
Which nutrient is most commonly applied as starter fertilizer placed near the seed at planting?
Answer: Phosphorus
Phosphorus starter fertilizer placed near the seed promotes early root development and seedling vigor, especially in cold soils.
The harvest index (HI) of a crop is defined as what?
Answer: Ratio of grain yield to total above-ground biomass
Harvest index is the proportion of total above-ground dry matter that is in the economically valuable grain portion.
Which practice helps reduce lodging in small grain crops such as wheat?
Answer: Applying plant growth regulators
Plant growth regulators (PGRs) shorten and strengthen straw internodes, reducing the risk of lodging in wheat and other small grains.