Challenge your understanding of manure use in organic farming with these easy questions, covering types, timing, safety, and soil impact. Perfect for beginners aiming to build a solid foundation in sustainable agriculture.
Which of the following is commonly used as organic manure to improve soil fertility in organic farming?
Explanation: Cow dung is a natural, organic manure widely used to enrich soil fertility. Synthetic urea is a chemical fertilizer not permitted in organic farming, plastic mulch does not add nutrients, and processed asphalt is not a fertilizer or soil amendment.
When is the most appropriate time to apply raw manure to fields growing edible crops?
Explanation: Applying raw manure at least 90-120 days before harvest reduces the risk of contaminating crops with pathogens. Applying one day before or during harvest increases risk, while application after harvest doesn't benefit the current crop and may be inefficient.
Which nutrient is most abundant in poultry manure compared to most other farm manures?
Explanation: Poultry manure is notable for its high nitrogen content, making it valuable for supporting plant growth. Silica and aluminum are not significant nutrients in manure, while chlorine is present in very small amounts and is not the main benefit.
Why is composting manure recommended before application in organic farming systems?
Explanation: Composting manure helps destroy harmful pathogens and weed seeds, improving safety and effectiveness. It does not add plastic residues, nor does it remove all nutrients or intentionally increase salt content.
Which effect does regular application of well-rotted manure have on soil structure?
Explanation: Well-rotted manure enhances soil structure by increasing organic matter, improving aeration, and retaining moisture. It does not harden soil, remove organic matter, or reduce earthworm activity—in fact, it encourages a healthy soil ecosystem.