Credit: Lumbwe Kalumba (Zambia)
The photo shows an extension officer from the Department of Fisheries with a group of fish farmers. This was during one of the on-farm practical demonstrations on pond fertilization and plankton bloom. The officer is demonstrating the use of a secchi disc to indicate the bloom in earthen ponds.
Note: We decided not to watermark the photos in order not to upset its clarity. However, we trust you will notify us if you wish to use a picture or more. This is expected and will be appreciated.
