Table 6 : Plant species suitable for growing along the effluent drains.

S. N.	Botanical Name	Habit
1.	Albizzia lebbek	Tree
2.	Casia fistula	-do-
3.	Anthocephalus cadamba	-do-
4.	Eucalyptus sp.	-do-
5.	Ficus glomerata	-do-
6.	Delonix regia	-do-
7.	Pithecelobium duice	-do-
8.	Phyllanthus emblica	-do-
9.	Polyalthia longifolia	-do-
10.	Leucaena leucocephala	Shrub
11.	Alstonia scholoris	-do-
12.	Nerium indicum	-do-
13.	Bougainvillea spectabilis	-do-
14.	Ipomaea cornea	-do-
15.	Duranta plumieri	-do-

Chemical Sprays
The pollutent injury to plants may be reduced by the use of certain chemical agents. A wide range of compounds are known to have protective ability.

Potassium ascorbate
0.02M solution of potassium ascorbate (C6H7o6) may be sprayed once after 2-3 weeks of plantation. Potassium ascorbate is known antidote to SO Phyto-toxicity in initial stages. Root feeding of calcium and potassium salts of ascorbic acid also reduce air pollution injury.

Urea
Foiler application 1% urea solution once in a month increase the air pollution tolerance in the plants.

Photosynth

Recently M/s Hindustan Lever have started marketing a chemical namely PHOTOSYNTH which help in photosynthesis of plant. This may also be used.

SELECTION OF PLANT SPECIES

The green belts are required to establish for different specific requirements of the area and type of pollution prevailing. Based on the studies carried out in Indian conditions plant species have been categories for their suitability for plantation of green belts as follows :- (Contd. on page 25)

(A) Plant species for dust polluted areas (Table 1)
(B) Plant species for areas of gaseous pollution (Table 2)
(C) Plant species for roadways (Table 3)
(D) Plant species for industrial premises (Table 4)
(E) Plant species around sewage treatment plants (Table 5)
(F) Plant species along the effluent drains and canals (Table 6)