6. Watch for Pests and Diseases
The constraints in patchouli cultivation are pests and diseases. There are several pests and diseases that normally attack patchouli plants, such as:
a) Bacterial Wilt Disease is a disease that causes a lot of loss due to the withered symptom in both young and fully-grown plants. If we remove the plant we will see that the root has rotten. To prevent the disease, we need to make sure that we plant seeds which have resistance to the disease, apply crop rotation and destroy immediately plants with the mentioned symptoms. Wilt Disease or usually called Budok is caused by bacteria and virus, and marked by the bumps on the stems which release awful smell when pressed. To prevent the disease, plant seeds which have resistance to the disease, perform crop rotation and destroy immediately infected plants by burning them in a location far enough from the farm.
b) The disease caused by Nematodes or worms. The symptom is the colour of the leaves turn to brown. To prevent the disease, plant seeds with resistance to the disease, use botanical pesticides and keep the plants away from Nematodes’ host plants, such as banana, ginger, tomato, peanut, etc.
c) Budog Disease, which has the following symptoms: the stem becomes swollen and thick, the leaf is wrinkled and becomes thick, the surface of the bottom of the leaf becomes red and the top becomes yellowish due to lack of nutrient, the leaf is wrinkled and turns to grey. To prevent the Budog Disease, spray botanical pesticides to extinct the vector virus, keep the area clean and the most important things are to use good and healthy seeds and to dispose infected plants immediately by burning them far away from the planting area.
d) Pests that normally attack patchouli plants are leaf-roller worms (Laprosema indicata), grasshopper/locust and red mite. To prevent those pests, we need to keep the area weed-free, trim/cut infected plants and burn them far away from the farm, and use botanical pesticides, such as neem, kerepung and sentang leaves.
Published by MicroAid
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