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Articles by A.W. Gandahi
Total Records ( 2 ) for A.W. Gandahi
  F.C. Oad , S.A. Channa , N.L Oad , A. Soomro , Z.A. Abro and A.W. Gandahi
  Four various water qualities Q1(EC =1.0 dS/m), Q2(EC = 1.5 dS/m), Q3(EC = 2.0 dS/m) and fresh canal water Q4(EC = 0.4 dS/m) were used to evaluate their effects over wheat growth and yield parameters. The results showed that, irrigation with canal water Q4 resulted significantly higher grain yield (4733.3 kg ha–1) followed by Q1 (3399.9 kg ha–1). However, the lowest growth rate and yield was observed in the experimental units receiving water quality Q2 (2116.6 kg ha–1) followed by Q3 (1333.3 kg ha–1). Growth and yield contributing parameters i.e. plants per plot, plant height, spike length, seed index and grain yield found to be superior in the continuos use of canal water, followed by plots where large proportion of canal water was applied in conjugation with tubewell saline water i.e.Q1(76%:24%), Q2(57%:43%), Q3(38%:62%). Thus, it is recommended that during shortage of canal water the canal and saline water could be used successfully in the proportion of 76% : 24% and 57% : 43% respectively for maximum wheat yield.
  F.C. Oad , A. Soomro , N.L. Oad , Z.A. Abro , M.A. Issani and A.W. Gandahi
  The textural class of soil was identified as clay loam and silty clay at 15-90 cm and 0-30 cm soil depths respectively. The chemical analysis of the soil showed ECe=4.43 dS/m, pH=8.20, SAR=8.33 and ESP=9.93. The planting of sunflower H0-1 was done on V-shaped furrows and flat beds; tested under varying moisture depletions. The maximum and satisfactory seed yield (2560 kg ha–1) was observed in the V-shaped furrows irrigated at 50% soil moisture depletion (SMD) followed by 70% SMD. However, excess water at the level of 30% SMD and stress conditions (90% SMD) exhibited very low yields. Water use efficiency (85.41 kg ha–1 cm–1) was also high in V-shaped furrow beds irrigated at 50% SMD. Thus, for saline soils it is recommended that sunflower must be planted on furrows and water should be applied at the rate of 50% soil moisture depletion level (SMD) for maximum water use efficiency and satisfactory sunflower seed yields.
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