تلخیص
A field experiment was conducted to find out the most efficient source of N for sorghum under different water regimes. Ammonium nitrate, sulphur-coated urea and prilled urea were applied, each @ 150 kg N ha'1 . Irrigations were applied at 25% ET (IJ. All nitrogen sources produced significantly higher yield than control. The difference between ammonium nitrate and sulphurcoated urea with respect to green fodder yield, N uptake, N recovery and agronomic efficiency were nonsignificant, but both were significantly better than urea. Irrigation regimes had significant effect on fodder yield. However fodder yield, N uptake, N ecovery and agronomic efficiency were more in /, as compared to It and I3, irrigation regimes. Interaction between fertilizer treatments and' irrigation regimes was also significant. Combination of ammonium nitrate x irrigation equal to ET (Ft x IJ was observed best regarding sorghum fodder yield, N uptake, N recovery and agronomic efficiency. Leaching losses ofN03-N were not observed under lt and i I2 irrigation treatments, but the leaching under I3 irrigation regime was expected as N03-N content in lower soil depths were more as compared to 7; and I2 irrigation regimes
M. Tahir Rashid , M. Yasin* . (1993) EFFECT OF IRRIGATION REGIMES AND NITROGEN SOURCES ON GROWTH AND NITROGEN UPTAKE BY SORGHUM FODDER, The Journal Soil & Environment , Volume 8, Issue (1-2).
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