Overview
Neurotheca robusta Hua is a species of plant in the family Meliaceae, native to Southeast Asia. It is a tropical tree that is commonly found in lowland and montane forests. It is also known by several other common names such as Mempening in Indonesia, Bangkiling-bayabas in the Philippines, and Thitpoktalay in Thailand.
General Appearance
The tree can grow up to 30 meters high with a trunk diameter of up to 75 cm. The bark is greyish-brown in color, with vertical fissures and horizontal ridges that become more pronounced with age. The leaves are pinnately compound and can grow up to 50 cm in length, with 10-22 leaflets per leaf. The leaflets are leathery, dark green on the upper surface, and pale green on the lower surface. The flowers are small, yellowish-white, and grow in groups at the ends of branches. The fruit is a woody capsule that splits open to reveal shiny, dark brown seeds.
Uses
The bark, leaves, and seeds of Neurotheca robusta Hua have various medicinal uses in traditional medicine. The bark is used to treat respiratory conditions such as coughs, asthma, and bronchitis, while the leaves are used to treat fever, malaria, and skin diseases. The seeds are used as a laxative and to treat stomach disorders such as dysentery and diarrhea. Additionally, the timber of the tree is used in construction and furniture-making due to its durability and hardness.
However, the species is threatened by habitat loss and overexploitation. Therefore, conservation measures are needed to ensure the survival of this valuable plant species.
Light Requirements
Neurotheca robusta Hua requires ample sunlight to grow. It prefers to be in direct sunlight for at least 6-8 hours each day. However, it can tolerate partial shade, especially during the hottest part of the day. It is essential to provide enough light to encourage healthy growth and flowering.
Temperature Requirements
The ideal temperature range for the growth of Neurotheca robusta Hua is between 18°C to 25°C. It can tolerate temperatures between 10°C to 30°C but cannot survive in freezing temperatures. The plant cannot tolerate extreme heat or cold, and it should be protected accordingly.
Soil Requirements
Neurotheca robusta Hua prefers well-drained soil that is slightly acidic with a pH range of 5.5 to 6.5. It requires soil that is rich in organic matter, and it grows well in loamy or sandy soil. It is essential to ensure the soil is moist but not waterlogged as this can lead to root rot.
Cultivation methods
Neurotheca robusta Hua prefers growing in humid and protected environments. It should be planted in a well-draining soil mixture that is rich in organic material. This plant requires bright, indirect sunlight, but it cannot tolerate direct sunlight.
It is recommended to provide the plant with higher humidity levels by placing a humidifier nearby or placing a tray of water and pebbles under the pot. This will ensure that the plant is comfortable and thriving.
Watering needs
Neurotheca robusta Hua has specific watering needs. Over-watering can lead to root rot, while under-watering can cause the plant to dry out and die. It is essential to water the plant only when the soil is completely dry to the touch.
When watering, give a good soak to the plant, but make sure to drain any excess water from the pot. Consistent moisture is necessary for the plant to thrive. This plant is sensitive to tap water, so it is recommended to fill a watering can and let it sit overnight before watering the plant.
Fertilization
Neurotheca robusta Hua requires fertilization during the growing season to support healthy growth. A balanced, water-soluble fertilizer with a 20-20-20 or 10-10-10 NPK ratio should be used every two weeks. Fertilizing during winter months is not necessary, as the plant goes into a dormant phase.
Pruning
Neurotheca robusta Hua requires frequent pruning to maintain its shape and size. The plant should be pruned in the early spring to remove any dead or overgrown parts. It is recommended to use sharp and clean pruning shears to prevent damaging the plant.
The plant can be trained to grow in a specific direction or shape by carefully bending and securing the stem with a soft tie. However, excessive bending can cause damage to the stem and should be avoided.
Propagation of Neurotheca Robusta Hua
Neurotheca Robusta Hua is an evergreen shrub typically found in the tropical regions of the world. It is easy to propagate this plant from cuttings or seeds.
Propagation by Cuttings
The ideal season for taking cuttings of Neurotheca Robusta Hua is in early spring, when the new growth has begun. Using a sharp, sterilized knife, take a semi-hardwood cutting about 4-6 inches long, making sure to cut just below a node. Remove the lower leaves and dip the cut end in rooting hormone powder. Then, insert the cutting into well-draining soil and water thoroughly. The cuttings should be kept in a warm, humid environment and should root in four to six weeks.
Propagation by Seeds
Propagation by seeds is another easy option for Neurotheca Robusta Hua. Collect the seeds when the plant starts to fruit. The fruit will fall off naturally and can be picked up and the seeds extracted. Sow the seeds in a well-draining soil mixture and cover with a thin layer of soil. Keep the soil moist and place in a warm, bright area. The seeds should begin to germinate in two to four weeks.
Whether you choose to propagate Neurotheca Robusta Hua by cuttings or seeds, it is important to ensure that the new plants are given adequate water and nutrients to ensure healthy growth.
Disease Management for Neurotheca Robusta Hua
Neurotheca robusta Hua plants can be vulnerable to various types of diseases that can significantly affect their growth, productivity, and quality. Therefore, it is crucial to implement proper disease management practices to prevent their occurrence or minimize their impact. Here are some common diseases that can affect Neurotheca robusta Hua and ways to manage them:
Anthracnose
Anthracnose is a fungal disease that can affect different parts of the Neurotheca robusta Hua plant, including the stems, leaves, and fruit. It is characterized by dark lesions that can appear sunken or raised and may have pinkish spore clusters. To manage anthracnose, one can remove the infected plant parts, avoid overhead watering, and ensure proper plant spacing for good air circulation.
Bacterial Leaf Spot
Bacterial leaf spot is a plant disease that is caused by bacterial pathogens, which can cause small, water-soaked spots on leaves. These spots can enlarge and turn brown, leading to significant defoliation. To manage bacterial leaf spot, one can employ crop rotation, provide adequate irrigation, and avoid overhead watering, which can spread the pathogen.
Pest Management for Neurotheca Robusta Hua
Neurotheca robusta Hua plants can be affected by various pests, including insects and mites. These pests can cause damage to the plant, reduce its yield, and negatively affect its quality. Here are some common pests that can affect Neurotheca robusta Hua and ways to manage them:
Mites
Mites are tiny organisms that can infest Neurotheca robusta Hua plants, causing injury to the leaves, which can manifest as discoloration, yellowing, or drying. To manage mites, one can use insecticides that target the pest's life cycle or employ natural predators such as ladybugs to eat them.
Thrips
Thrips are tiny insects that can damage Neurotheca robusta Hua plants by feeding on their juices and making them susceptible to other pests and diseases. The pest can cause the leaves to develop white or silver streaks, as well as curl and become distorted. To manage thrips, one can use insecticides that target the pest or employ natural predators such as predatory mites or wasps to control their population.
