In the nursery, under shade, coffee seedlings present a non-adapted photosynthetic apparatus to the continuous light intensity found in the field. Thus, prior to be taken to the field, they need to go through an adaptation period after which they can be kept under constant full sunlight. Excess light energy per se or associated with other environmental factors like water deficit and high temperature causes what is known as photoinhibition and plants must present mechanisms to dissipate this excess of energy or alternatively repair the potential photoinhibitory damage