Explore key facts about optimizing coriander fertilization in horticulture. This quiz assesses your understanding of soil preparation, nutrient management, and best practices for healthy coriander growth.
Which nutrient is most critical for healthy leaf development in coriander during its early growth stages?
Explanation: Nitrogen is especially vital for leafy crops like coriander because it promotes lush green leaf development in early stages. Potassium mainly helps with disease resistance and quality, calcium is needed for cell wall strength, and phosphorus supports root development but not primarily leaf growth.
When preparing soil for coriander cultivation, what is the recommended pH range for optimal growth?
Explanation: A pH of 6.0–7.0 provides the best conditions for nutrient availability for coriander. Acidic soils (such as 4.5–5.5 and 5.0–5.5) may limit nutrient uptake, and alkaline soils (7.5–8.5) can cause micronutrient deficiencies.
At what stage should the majority of nitrogen fertilizer be applied to coriander in field conditions?
Explanation: Nitrogen should be supplied mainly at sowing and early vegetative stage to support leaf growth. Applying it only after seedling emergence is too late, while application at flowering or just before harvest does not enhance leaf yield and may waste resources.
Which organic amendment can be incorporated into soil to improve coriander yield and soil fertility?
Explanation: Well-rotted farmyard manure enriches the soil with nutrients and organic matter, enhancing coriander growth. Pure sand provides poor nutrition, peat moss retains moisture but offers limited fertility improvement, and vermiculite is primarily for aeration, not nutrition.
Yellowing of coriander leaves often indicates a deficiency in which essential nutrient?
Explanation: Yellowing, or chlorosis, in coriander is usually linked to nitrogen deficiency, as nitrogen is essential for chlorophyll. Magnesium and iron also relate to chlorophyll but are less commonly deficient in typical horticultural practices. Zinc deficiency causes stunting and abnormal leaf shapes rather than generalized yellowing.