How are goldenrain tree seeds harvested? What are the seedling cultivation methods?

The goldenrain tree is cold-resistant and drought-tolerant, and is often cultivated as a garden ornamental tree. In addition, its wood can be used to make furniture, and its leaves can be used as dye, giving it high value. It is planted in many regions. So how are goldenrain tree seeds harvested? What are the seedling cultivation methods? Let's find out below.

How are goldenrain tree seeds harvested?

The fruit of the goldenrain tree matures from September to October. You can choose a goldenrain tree that grows well, has a straight trunk, an open crown, plump fruit, and is in its prime age as the mother tree for seed collection. Collect the fruit promptly before it splits open, otherwise it will fall off on its own. However, it should not be collected too early either, otherwise the seed germination rate will be low. After collecting the fruit, remove the peel and fruit stalk, and promptly sun-dry or spread out in the shade to dry. Once the capsules split open, beat them to thresh the seeds, and clean the seeds by screening.

What are the seedling cultivation methods for the goldenrain tree?

1. Sowing

Sow in March in spring, take out the seeds and sow them directly. Apply base fertilizer on the selected plot. The sowing method can be wide-row drilling, which has the characteristics of ventilation and light transmission and is easy to manage. After sowing, cover with a 1-2cm layer of loose, finely crushed soil to prevent the seeds from drying out and losing water or being harmed by birds and animals. Then water once with a small amount of water, and then cover with materials such as grass and straw to raise the ground temperature, maintain soil moisture, prevent weed growth and soil compaction. After about 20 days, when the seedlings emerge completely, remove the rice straw.

2. Thinning management

When the seedlings grow to 5-10cm tall, thinning should be carried out. Generally, about 12 seedlings are kept per square meter. The principle of thinning is to remove the inferior and keep the superior, and to thin out the small and keep the large. Thinning is best done on cloudy and rainy days. In addition, combined with thinning, fill in gaps where plants are missing, with the aim of ensuring uniform distribution of seedlings.

3. Daily management

In daily management, do well in loosening the soil, weeding, watering, and so on. After the seedlings grow larger, they can be dug up and graded, and transplanted in the spring of the second year. Before transplanting, cut the roots slightly shorter. After transplanting, cut off the seedling stem from the root crown, and then water thoroughly. After germination, buds should be frequently removed, keeping only the strongest bud to cultivate as the trunk. During the growing period, frequently loosen the soil, hoe weeds, water, and apply additional fertilizer. By autumn, a straight trunk can be formed.

4. Fertilization management

Fertilization is an important measure for cultivating strong seedlings. After the seedlings emerge and grow roots, it is advisable to fertilize frequently in combination with watering. During the peak annual growth period, quick-acting fertilizer mainly based on nitrogen should be applied to promote the vegetative growth of the plant. In early autumn, stop applying nitrogen fertilizer and increase the application of phosphorus and potassium fertilizers to improve the degree of lignification of the plant and enhance the cold resistance of the seedlings. In winter, it is advisable to apply farmyard organic fertilizer as base fertilizer, which not only provides sustained nutrients for seedling growth, but also plays a role in heat preservation and soil improvement.

5. Shaping and pruning

The crown of the goldenrain tree is nearly spherical, and the tree shape is upright. A natural tree shape is generally adopted. Due to different uses, the shaping requirements also differ. Street tree seedlings require a straight trunk, with the height of the first branch at 2.5 m to 3.5 m, a complete and full crown, and evenly distributed and spreading branches. Shade trees require a large, dense crown, and the height of the first branch is lower than that of street trees.

6. Disease control

For gummosis, spray lime sulfur mixture before budding in early spring, once every 10 days, twice in succession, to kill overwintering pathogens. During the onset period, spray chlorothalonil or carbendazim at 800 to 1000 times dilution. For aphids, in late April, bury and apply 15% aldicarb granules at the roots, using 1-2g of pesticide per centimeter of tree trunk diameter, then cover with soil and water; or water with dimethoate emulsifiable concentrate, using about 1.5kg of pesticide solution per centimeter of trunk diameter. During the occurrence period of Japanese wax scale, spray a mixed solution of 2000 times Lorsban and 1000 times washing powder, spraying 2 to 3 times, with an interval of 7 to 10 days. Use 25% carbofuran wettable powder at 200 to 300 times dilution to irrigate the roots twice in May, which has a very good effect on killing nymphs.

The above is an introduction to the harvesting of goldenrain tree seeds and the seedling cultivation methods. In order to effectively ensure the growth of the goldenrain tree, we must do well in these management points. Do you have anything to add about goldenrain tree planting? Welcome to leave a message and share!

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