Discover essential knowledge on sunflower cultivation, from seed selection to optimal planting practices. This quiz explores the vital steps for successful sunflower growth in agricultural settings.
Which season is generally considered best for sowing sunflowers in most temperate agricultural zones?
Explanation: Spring is ideal for sowing sunflower as the soil warms up and frost risk decreases, supporting strong germination. Autumn and Winter are usually too cold, which can inhibit growth or cause seeds to rot. Mid-Summer may expose young plants to excessive heat and water stress.
What type of soil is typically best for healthy sunflower cultivation and root development?
Explanation: Well-drained loam provides balanced moisture and nutrients, supporting vigorous sunflower growth. Heavy clay tends to compact, sandy soils may lack nutrients, and waterlogged soils can suffocate roots and promote disease.
When planting sunflowers, what is the commonly recommended distance between seeds for most varieties?
Explanation: Spacing seeds 20–30 cm apart allows each sunflower enough room to grow without excessive competition. 5 cm is too crowded for healthy development, while 60–70 cm or 1 meter is unnecessarily wide for most varieties, reducing potential yield per area.
How many hours of direct sunlight per day do sunflowers generally require for optimal growth?
Explanation: Sunflowers thrive with 6–8 hours of direct sunlight daily, supporting strong stems and abundant flowers. 2–3 hours or only 1 hour is usually insufficient, while full shade prevents proper growth and flowering.
Why is fertilizing sunflowers with balanced nutrients important during cultivation?
Explanation: Balanced fertilization supports vigorous growth, sturdy stems, and optimal seed development. Fertilizer does not prevent sunburn, attract pollinators solely, or change flower color to blue, all of which are unrelated effects.