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The minimum temperature for germination of barley is 34 degrees to 36 degrees F (1 degrees - 2 degrees C). After the seed takes up moisture, the primary root (radicle) emerges. The radicle grows downward, providing anchorage and absorbing water and nutrients, and eventually develops lateral branches.arley can be distinguished by differences in head type and growth habits. In a six-rowed barley, three kernels are formed at each node of the head while in a two-rowed type, only a single kernel forms at each node (figure 1). Barley is also classed by its requirement for cold temperatures.
Growing Information. How to plant: Propagate by seed Germination temperature: 65 F to 85 F-Will not germinate below 55 F Days to emergence: 4 to 7 - Supersweet hybrids require more moisture and often take longer to germinate. Seed can be saved 2 years.Maintenance and care: Corn requires rich, fertile soil.rowing Information. How to plant: Propagate by seed Germination temperature: 65 F to 85 F-Will not germinate below 55 F Days to emergence: 4 to 7 - Supersweet hybrids require more moisture and often take longer to germinate. Seed can be saved 2 years.