Radish Sowing Secrets Quiz Quiz

Explore foundational facts about optimal radish seed rates and sowing techniques to boost garden and field yield. Covering planting density, spacing, and common mistakes, this quiz helps growers refine basic radish cultivation skills.

1. Recommended Seed Rate per Hectare

   What is the commonly recommended seed rate for sowing radish in open field conditions per hectare?

   1. 25–28 kg
   2. 10–12 kg
   3. 18–20 kg
   4. 2–3 kg

   Explanation: A seed rate of 10–12 kg per hectare is widely recommended for radish, ensuring optimal plant population and root development. 2–3 kg is too low for field-scale planting and could result in poor yield. 25–28 kg and 18–20 kg are excessive rates, likely causing overcrowding and reduced root size.

2. Effect of Excess Seed Rate

   If a grower uses a seed rate much higher than recommended, what is the most likely outcome for radish roots?

   1. Roots become crowded and undersized
   2. Seed germination will not occur
   3. Plant disease risk is eliminated
   4. Roots develop faster and larger

   Explanation: Excessive seed rate leads to overcrowded seedlings, resulting in small, poorly developed roots. Faster and larger root growth does not occur with too many plants closely spaced. High seed rates do not eliminate disease risk, and excessive seeding does not prevent germination.

3. Seed Spacing for Best Growth

   What is the ideal spacing between rows when sowing radish seeds for optimal growth?

   1. 10 cm
   2. 50 cm
   3. 30 cm
   4. 60 cm

   Explanation: A row spacing of 30 cm provides enough room for healthy radish root and leaf expansion. 10 cm is too tight, causing competition, while 50 cm and 60 cm lead to underutilized space, reducing field productivity.

4. Impact of Low Seed Rate

   A farmer uses only 3 kg of radish seed per hectare. What problem is most likely to occur?

   1. Excess weed growth is suppressed
   2. Roots will become pithy
   3. Plant stand will be too sparse
   4. Soil will be overused

   Explanation: Using just 3 kg per hectare results in a sparse stand, leaving gaps where weeds may thrive and reducing total yield. Roots turning pithy is not directly caused by a low seed rate, soil overuse is not relevant, and low density promotes, not suppresses, weed growth.

5. Direct Sowing Method

   Which of the following is a common method for sowing radish seeds in open fields?

   1. Transplanting radish seedlings
   2. Hydroponic floating rafts
   3. Broadcast sowing
   4. Aerial drone sowing

   Explanation: Broadcast sowing is widely used for direct seeding of radish in open fields, allowing quick and even distribution. Transplanting is not common for radish due to its root sensitivity. Hydroponics and drone sowing are specialized or rare methods not standard for field radish.