318
Rack and String Culture
Two rows of tar coated bamboo poles are planted vertically at the bottom (substratum) and a rack is prepared by fixing bamboo poles or thin rods crosswise on top.
Galvanized wires or tar-painted units are hung vertically from the crossbars, to
which seedlings adhere. About 5 to 10 pieces of empty shells are hung at intervals
of about 15–20 cm on 1.5 m string and 20 such strings are hung vertically for every
3.3 m
2
area (Fig. 9.12).
Rack and Tray Culture
In this culture method, racks are prepared similarly as in previous method and culture trays are hung vertically instead of strings (Fig. 9.13).
Culture trays are of several types as discussed below:
Fig. 9.12 Rack and string culture
9 Mangroves: A Source of Existing and Alternative Livelihood
Rack and String Culture
Two rows of tar coated bamboo poles are planted vertically at the bottom (substratum) and a rack is prepared by fixing bamboo poles or thin rods crosswise on top.
Galvanized wires or tar-painted units are hung vertically from the crossbars, to
which seedlings adhere. About 5 to 10 pieces of empty shells are hung at intervals
of about 15–20 cm on 1.5 m string and 20 such strings are hung vertically for every
3.3 m
2
area (Fig. 9.12).
Rack and Tray Culture
In this culture method, racks are prepared similarly as in previous method and culture trays are hung vertically instead of strings (Fig. 9.13).
Culture trays are of several types as discussed below:
Fig. 9.12 Rack and string culture
9 Mangroves: A Source of Existing and Alternative Livelihood