Environmental factors such as temperature, light, pH, and soil moisture are known to affect seed germination (Chachalis and Reddy 2000; Taylorson 1987). Burial depth of seed also affects seed germination and seedling emer- gence. Weed seedlings may emerge from the soil surface to 15 cm deep (Bello et al.
Why are my radish seeds not germinating?
Your Soil Is Too Cold Or Too Dry Another reason your radish seeds are not germinating has to do with soil conditions. If the soil is too cold, then your radish seeds might not sprout right away (whether you are growing indoors or outdoors). They may sprout when conditions improve and the soil warms up.
What are the optimal conditions to grow radish seeds?
Radishes prefer light, sandy loams with pH 6.5 - 7.0, but will tolerate a wide range of soil types. Soils with pH below 6.5 may require liming. Radishes are a cool season crop, preferring temperatures between 40-70°F. Optimum temperature range is 60-65°F.
How does pH affect radish seed germination?
Radish seeds have a high percentage of germination in pH's 4-12 and a very low percentage of germination in pH 1-3 and pH 13-14. This shows that radish seeds can germinate very well in almost all pH levels.
How do radishes germinate?
Germinating Radish Seeds Spring radish seeds readily germinate when exposed to constant temperatures between 55 and 75 degrees Fahrenheit. ... Sow the seeds 1/4- to 1/2-inch deep and 1 inch apart. Under ideal conditions, spring radish seeds will germinate within three to four days, but may take as long as 10 days.
What effect does temperature have on radish germination?
The effect of temperature on radish growth was examined under controlled conditions. In radishes grown at the higher temperatures of 20-25°C (night-day), dry weight of leaves was increased and that of fleshy organs was reduced.
How do you germinate radish seeds?
Germinating Radish Seeds Sow the seeds 1/4- to 1/2-inch deep and 1 inch apart. Under ideal conditions, spring radish seeds will germinate within three to four days, but may take as long as 10 days.