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Fish cum Horticulture

Fish cum Horticulture

  • Considerable area of an aquaculture farm is available in the form of dykes some of which is used for normal farm activities, the rest remaining fallow round the year infested with deep-rooted terrestrial weeds.
  • The menacing growth of these weeds causes inconvenience in routine farm activities besides necessitating recurring expenditure on weed control.
  • This adversely affects the economy of aqua-farming which could be considerably improved through judicious use of dykes for production of vegetables and fish feed.
  • An integrated horti-agri-aquaculture farming approach leads to better management of resources with higher returns.
  • Several varieties of winter vegetables (cabbage, cauliflower, tomato, brinjal, coriander, turnip, radish, beans, spinach, fenugreek, bottle gourd, potato and onion) and summer vegetables (amaranth, water bind weed, papaya, okra, bitter gourd, sponge gourd, sweet gourd, ridge gourd, chilly, ginger and turmeric) can be cultivated depending upon the size, shape and condition of the dykes.

Suitable farming practices on pond dykes:

  • Intensive vegetable cultivation may be carried out on broad dykes (4m and above) on which frequent ploughing and irrigation can be done without damaging the dykes.
  • Ideal dyke management involves utilisation of the middle portion of the dyke covering about 2/3rd of the total area for intensive vegetable cultivation and the rest 1/3rd area along the length of the periphery through papaya cultivation keeping sufficient space on either side for netting operations.
  • Intensive cultivation of water bind weed, Indian spinach, radish, amaranth, okra, sweet gourd, cauliflower, cabbage, spinach, potato, coriander and papaya on pond dyke adopting the practice of multiple cropping with single or mixed crops round the year can yield 65 to 75 that year.
  • Semi-intensive farming can be done on pond dykes (2 to 4 m wide) where frequent ploughing, regular irrigation and deweeding are not possible.
  • Crops of longer duration like beans, ridge gourd, okra, papaya, tomato, brinjal, mustard and chilli are found suitable for such dykes.
  • Extensive cultivation may be practised on pond dykes (up to 2 m wide) where ploughing and irrigation by mechanical means are not at all possible. Such dykes can be used for cultivation of sponge gourd, sweet gourd, bottle gourd, citrus and papaya after initial cleaning, deweeding and digging small pits along the length of the dykes.
  • Extensive cultivation of ginger and turmeric is suitable for shaded dykes.

Carp production using leafy vegetables and vegetables wastes:

  • A huge quantity of cabbage, cauliflower, turnip and radish leaves are thrown away during harvest.
  • These can be profitably utilised as supplementary feed for grass carp.
  • During winter, grass carp can be fed with turnip, cabbage and cauliflower leaves, while in summer, amaranth and water-bind weed through fortnightly clipping may be fed as supplementary feed for rearing of grass carp.
  • Monoculture of grass carp, at stocking density of 1000 fish/ha, fed on vegetable leaves alone fetches an average production of about 2 t/ha/yr.
  • While mixed culture of grass carp along with rohu, catla and mrigal (50:15:20:15) at a density 5000 fish/ha yields an average production of 3 t/ha/yr.

Fish cum horticulture cum paddy culture

 

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