Explore key factors that influence mustard and wheat yield in agriculture with five thoughtfully designed questions. Enhance your understanding of crop productivity by engaging with relevant scenarios and examples.
Which is the most suitable period for sowing wheat in northern India to achieve maximum yield?
Explanation: Mid-November to late November is ideal for wheat sowing in northern India, as it allows the crop to utilize winter moisture and suitable temperatures. Sowing too early, as in late August to early September, exposes seedlings to high temperatures. Planting in mid-January to early February or late April to early May leads to poor growth due to rising temperatures and reduced soil moisture, negatively affecting yield.
How does water stress during the flowering stage affect mustard crop yield?
Explanation: Mustard is particularly sensitive to water stress during flowering, resulting in a significant reduction in seed set and overall yield. Slightly increasing yield or having no effect is incorrect, as adequate moisture is crucial at this stage. While water stress may cause leaf discoloration, its primary effect is yield reduction.
Why is nitrogen considered crucial for maximizing wheat grain yield?
Explanation: Nitrogen enhances vegetative growth and supports proper grain filling, which are key for maximizing wheat yield. While good nutrition can indirectly affect disease resistance, nitrogen's main role is not defense. It does not reduce water requirements or delay maturity by several months; excessive nitrogen may even accelerate maturity in some situations.
What is a common benefit of intercropping mustard with wheat in a field?
Explanation: Intercropping utilizes resources like light, water, and nutrients more efficiently, often leading to better overall productivity. Lower light absorption and reduced pollination are incorrect, as intercrops frequently capture more total light and mustard is generally self-pollinated. Permanent soil acidification is not a typical result of this practice.
Which pest is recognized as a major threat to mustard crops, potentially reducing yield if uncontrolled?
Explanation: Aphids are a significant pest for mustard, feeding on sap and potentially causing major yield losses. Armyworms and stem borers are more commonly associated with cereal crops like wheat, while root-knot nematodes are problematic but less commonly a principal threat to mustard yield compared to aphids.