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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.
Temperatures for Germination. Okra sprouts best in warm soil. Plant it in the spring or early summer when the soil temperature has reached at least 70 degrees F and the daytime temperatures are reaching 75 to 90 degrees. Okra seeds do not sprout in soil temperatures below 65 degrees.emperatures for Germination. Okra sprouts best in warm soil. Plant it in the spring or early summer when the soil temperature has reached at least 70 degrees F and the daytime temperatures are reaching 75 to 90 degrees. Okra seeds do not sprout in soil temperatures below 65 degrees.