Translucent leaves having discoloration, in oncidium shoot! Help ☹️

[estación seca]

Many Oncidiums and hybrids are cool to intermediate growing plants. If the growing space is quite warm, these become very susceptible to a lot of various bacterial and fungal rots. Species or hybrids of warmth tolerant plants may do fine in these circumstances.

What are temperatures in your growing area, day/night? Which plant is this?