تلخیص
To study salinity distribution, soil characteristics and wheat yield relations, the Gajargola dutnwutoiyj - rr ~ Tt" was divided into head, middle and tail sections. In each section twelve outlets (Mogas) were marked for study. One farmer's wheat field and one tubeweU at each outlet was also selected for sampling and to record wheat grain yield. The soil texture was variable ranging from sandy loam to sandy clay loam. On the basis of EC, and ESP of the sampled wheat fields, 33.3, 50.0 and 66.6 percent of the sous were salt affected at head, middle and tail sections, respectively. The general survey conducted on the basis of gross area of the outlets, indicated that 24.1, 46.3 and 56.7 percent area was salt affected at head, middle and tail of the distributary. At head, middle and tail sections about, 16.6, 41.6 and 58.3 percent (respectively) tubeweUs were pumping unfit water. The EC, (r=- 0.11), ESP(r= -0.25), sod F(r=0.20) and K (r=0.01) were not significantly correlated with grain yield, which was reasonably good (2205 - 2650 kg ha') at all sections of the distributary. The relative increase in salinity at tail may be attributed to the inequitable water distribution. The tubeweUs (installed to make the water deficit) pumping inferior water quality also play an additive role to build up soil salinity at the tail end of the distributory
M. Azhar, , favaid, , Ch. Karamat AU,, favaid Iqbal Anjum , Tashkil-ur-Raza Khan1 . (1998) SOIL CHARACTERISTICS AND WHEAT YIELD IN THE IRRIGATION COMMAND OF GAJARGOLA DISTRIBUTOR, The Journal Soil & Environment , Volume 14, Issue 14(1-2).
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