There’s nothing wrong to be careful when you do watering in your orchid clump. Inadequate watering can cause decay in buds. Sprouts of orchids, especially on the dendrobium group when grown will form a leaf bud that resembles a crown on the top. Buds that resemble this crown are none other than the ends of young leaves that have not opened perfectly and position the tip of the upright leaves by forming a hollow / narrow cavity in the middle, just like a crown.
Sprouts of buds that form the crown buds is very necessary to note the extra time of watering. Water spray can fall in the middle of the crown bud and accommodated to form a puddle at the tip of the bud. If inside this puddle there are fungus spores, then the bud end cells and the base of the leaf bud will be very easily infected. The presence of water / high humidity will help sprout mold spores. Soon the fungal spores will penetrate through the cell wall of meristem tissue from the tip of the bud. Leaf buds and leaf buds are meristem tissue that is still young and active splitting. The hallmark of the meristem cell is its cell wall that has not undergone perfect thickening. This situation becomes very vulnerable if infected by fungal or bacterial seeds. In plant cells, fungal cells or bacteria will break cell material and cell walls into simpler compounds to obtain energy as well as breeding material.
When the tip of the bud decomposes, the area of infection spreads to the base of the leaf buds which is directly related to the tip of the bud. At this stage it will appear, the tip of the young leaves becomes pale yellowish, and when pulled slowly will easily detach. At the base of the base looks soft brown and slightly slimy. To prevent the spread of the disease to other parts of the plant, most plants have their own mechanisms to inhibit the carrier network with some sort of secondary metabolite. This is so that the channel from the bud of the tillers to the adult bulb is stopped. Once the vessel is blocked by secondary metabolites, the food stream for the stilted buds is dying, so that it immediately dies and dries up. When the sapling buds dry up, it is hoped that the source of infection will be isolated on the dead tissue.
The broken bud ends can not grow anymore, so the adult plant will grow the sapling buds from the other buds. However, to be more secure, immediately cut the infected tillers at the base of the bulb that is directly connected with the bulb adult with the tool that has been smeared spritus / alcohol 70-90% / fungicide / burned on the sharp. After cutting, the pieces are smeared with spritus / alcohol / fungicide and then left in a dry, windy place.