Increasing
grazing pressure on the available land resources and continuous shrinkage and
over-exploitation of grazing lands causes deterioration of arid ecosystem. In Rajasthan
large area (0.38 mha) suffers from problems of salinity and alkalinity; and its
rehabilitation through biocorrective measures is required. A field trial with Sporobolus
diander and Cenchrus ciliaris on
highly degraded shallow, waterlogged
salty area in Jodhpur, Rajasthan showed that plantation improved the soil
properties and grasses could be established. Raised soil structures assisted in
establishment of even non salt tolerant grass. The mean grass yield was 754.6
g/m2 for S. diander and
600 g/m2 for C. ciliaris.
Soil structures
significantly influenced the grass yield and it was 906 and 894 g/m2
for the platform and slope soil structures respectively as
compared to control 465 g/m2 for S.
diander. In case of C.
ciliaris, slope was the best structure with 1104 g/m2
yield which is 6.5% times more than control (169 g/m2)
indicating the positive effect of salt leaching. Soil conditions improved and
many other grasses also appeared in the experimental
area such as C. biflorus, Bracharia ramose,Dactyloctenium
sindicum, D. agypticum, S. helvolus and C.virgata.