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Pakistan has the largest contiguous gravity flow canal irrigation
system, but is falling short of good-quality water due to increased
cropping intensity and increased demands for households and
industry over the years. In Pakistan the agriculturally important
areas are arid or semi-arid where freshwater supplies are limited
to meet crop water requirements especially at critical stages. This
shortage is being fulfilled by exploiting groundwater resources
which is mostly brackish in nature. We evaluated the growth
response of wheat and berseem crops to brackish water during
reclamation of dense saline-sodic soils. The cyclic irrigation of
CW and TW along with the application of gypsum @ 100% SGR or FM or
with auger hole 60 m-2 refilled with gypsum and rice husk (1:1
ratio) remained better in lowering ECe, pHs and SAR and produced
maximum grain and straw yields of wheat as well as berseem fodder.
Overall, it was concluded that low quality waters could be
exploited for irrigation on marginal salt-affected soils.
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