Focus on Environment

<strong>Focus</strong> Environ (2016)
Integrated Rice-Fish Farming
shrimp PL. Around 10-15% area of the total
field can be used as nursery (Fig. 10).
Nursery is often referred to as “Pocket
Gher”. Generally, shrimp or prawns PL are
reared in the nursery for 20-25 days. Stocking
density should be 1500-2000 PL (1.5-2
cm in size) per decimal area
(http://en.bdfish.org/2010).
g) Stocking of fish fry/fingerlings/prawn
PL in rice fields
Rahman et al
Prawn PL needs to be stocked during evening
as they are more sensitive than the fin
fish fry that can tolerate sudden changes in
temperature and dissolve oxygen level in
water (Figure 11). If they are stocked during
evening, the released PL will get more time
at night to adapt with the environment.
Stocking density will be 10000-15000 PL/
hectare area (http://en.bdfish.org/2010).
In case of finfish, fry can be stocked in
the morning or in the afternoon (Figure 11).
Figure 9: Pictures showing preparation of rice-fish plots.
Figure 10: Pictures showing nursery of fish and prawn PL in rice fields.
Figure 11: Stocking of fish fingerlings and prawn PL in rice plots.
ISBN: 978-967-14475-0-5; eISBN: 978-967-14475-1-2 23