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Site specific afforestation

Different species namely, Simaruba glauca, Albizia lebbeck, Albizia richardiana, Acacia hybrid, Hibiscus tiliaceus and Azaridachta indica were planted in Theri sand dune area with 80cm3 pit with different bio-fertilizers including tank silt. All the species are performing well under the treatment namely application of 2kg tank silt + bio-fertilizers and bio-nutrients.

18 months appreciable growth of Acacia hybrid in Theri Pattakarai Research Centre
Tank Bed Afforestation
To evolve a suitable improved tank bed afforestation technique an experiment was conducted at Kalamavoor Modern Nursery division. Convergent technologies with gypsum, spent wash and bio fertilizers as inputs in 2 pit sizes of 30cm3 and 45cm3 was undertaken.  The species selected were of multi purpose utility.


Species Name Species Name Species Name
Pongamia pinnata Acacia nitotica Casuarina equisetifolia
Azadirachta indica Terminalia arjuna Albizzia lebbeck
Tamarindus indica Syzygium cuminii Simaruba glauca
At the end of first year, it was found that the species Terminalia arjuna recorded maximum survival percentage followed by Tamarind, Neem and Acacia nilotica.
Shelter Belt model experiment
This experiment has been taken up during 2001 in Sambiapattinam and Dhanuskodi. The objective of the trial is to arrest the wind erosion by planting trees in different storey.
Location Area planted Total plants Spacing Species in Top storey Species in middle storey Species in lower storey
Sambaipattinam 3ha 7500 Nos 2m x 2m Casuarina equiselifolia , Samania saman Cassia siamea, Thespesia populnea, Acacia auriculiformis Creepers Spinifix, litoralis Dodonea, Cassia
Dhanush Kodi 0.16 ha 2200 Nos 1m x 1m Casurina junghuniana , Eucalyptus tereticornis Phoenix sp, Zyzyphus jujuba, Prosopis juliflora, Acacia auriculiformis, Thespesia populnea, Tecomella undulata, Ficus species  
Growth performances of all storey plants was satisfactory and shifting of soil was completely arrested on leeward side (two chain length)
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