Explore core practices and concepts in maize crop management, from soil preparation to pest control. This quiz highlights essential facts for effective maize cultivation.
Which type of soil is most suitable for optimal maize growth, considering factors like drainage and nutrient availability?
Explanation: Well-drained loamy soil supports maize due to its balanced texture and ability to retain nutrients while avoiding waterlogging. Heavy clay can cause root suffocation, sandy soil is often nutrient-poor, and saline-alkaline soil can inhibit plant growth and nutrient uptake.
In most tropical regions, what is considered the best season to plant maize for optimal yields?
Explanation: Sowing at the onset of the rainy season ensures adequate moisture for germination and early growth. Planting in the dry season or during drought leads to poor establishment, while late winter may be too cold for optimal growth in tropical areas.
What is the recommended plant-to-plant spacing for maize when sown in rows to promote healthy development?
Explanation: A spacing of 20–25 cm between maize plants helps reduce competition and allows for proper light and nutrient access. 5–7 cm and 2–3 cm are too close, leading to overcrowding, while 70–80 cm is too far, reducing land use efficiency.
Which nutrient deficiency most commonly leads to yellowing of leaves in maize crops?
Explanation: Nitrogen deficiency typically causes older maize leaves to turn yellow, due to its crucial role in chlorophyll production. Potassium and magnesium deficiencies can also cause discoloration but show different patterns, while calcium deficiency usually affects new growth.
What is the most effective integrated method to manage stem borers in maize fields?
Explanation: Crop rotation and resistant varieties are key integrated pest management strategies against stem borers. Shallow watering and planting in shade do not target stem borers, and using table salt is ineffective and potentially harmful.