What are the methods for treating black locust seeds? Explained clearly in one article
Dry black locust seeds are especially hard, with a dense seed coat and poor water permeability. In production, black locust seeds are mostly soaked in 50°C warm water, but the effect is inferior to the boiling water scalding method. The steps are as follows:
Pour boiling water into a water vat or other container, with the amount of water about one-half of the container. Put the black locust seeds into the boiling water. Stir the boiling water continuously with a wooden board so that the black locust seeds are heated evenly in the boiling water. After stirring for 5 minutes, quickly add cold water to cool it down until the water temperature drops to where it is not hot to the touch. Scoop out the blighted seeds floating on the surface, and soak the seeds in warm water for 24 hours. The next day, pour out the dirty water, use the rice-washing method to separate out the black locust seeds that have already absorbed water and swollen, and germinate them at 20°C to 25°C. Repeat the above method, and then treat the black locust seeds that have not absorbed water with boiling water again. During the germination process, respiration can cause the seeds to generate high temperature and mucus. Therefore, every day use warm water that is not hot to the touch to rinse the black locust seeds 1 to 2 times. Rinsing can keep the seeds moist and clean and prevent mildew and rot. After 5 to 7 days of germination, more than one-third of the seeds will split open and grow white radicles, which in production is called whitening. From late March to early April, sow the whitened black locust seeds into the nursery, and after 7 to 10 days black locust seedlings will grow. Compared with the warm water soaking method, the seed scalding method is simple and easy to operate; in one scalding treatment, the seed water absorption and swelling rate is above 95%, which is 20% to 30% higher than warm water soaking. High-temperature hot water has a disinfecting and sterilizing effect, and the incidence of damping-off disease at the seedling stage is low.