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Articles by Abdur Rab
Total Records ( 2 ) for Abdur Rab
  Asghar Ali , Abdur Rab and Syed Asghar Hussain
  The experiment was conducted to investigate the yield and nutrient losses and economic return at various stages of harvest in potato crop. Plant height and plant spread increased from 31.8 and 41.58 at HD60 to 40.3 and 50.58 cm at HD90. The number of stems per plant also increased from 3.55 at HD60 to 6.45 when the crop was harvested at HD90. Specific gravity and dry matter content also increased when harvesting was delayed to the optimum time. Specific gravity and dry matter contents increased from 1.075 and 19.60% at HD60 to 1.083 and 21.31% at HD90, respectively. The starch content increased gradually from 14.79% at HD60 to 15.65% at HD90 while total sugars decreased with an increase in developmental stage. It decreased from 707.75 mg/100g at HD60 to 549.50 mg/100g at HD90. Early harvested crop resulted in smaller tuber size (39.20 mm) and low yield (7.79 t ha-1) at HD60 which increased to a tuber size of 64.1 mm, yielding 11.45 t ha-1 at HD90. The highest gross benefit (Rs. 60,810 ha-1) was obtained at HD60 (Rs. 60810), which decreased to Rs. 53,940 ha-1 at HD90. These results suggested that although early harvest gave poor quality tubers and low yield but the market demand at this stage is high and the growers get higher return from early harvesting.
  Arshad Ali Khan , Muhammad Sajid and Abdur Rab
  The study was conducted to investigate the effect of various combinations of phosphorus from organic and inorganic sources on fruit quality of two tomato cultivars i.e., Falcon and Rio Grande for two years. The response of tomato cultivars was assessed to six combinations viz. 0-0, 100-0, 75-25, 50-50, 25-75 and 0-100% of poultry manure (PM) and Triple Super Phosphate (TSP). All the factors (P source, cultivar and year) alone and in combination significantly (p<0.05) affected the fruit quality of tomato fruit. The lowest TSS content (4.10°Brix), Protein (7.05%), Ash (9.80%) and Fat (2.74%) were recorded in fruits of Falcon cultivar in control treatment during 2009. However, lowest fiber content (7.08%) was examined in Rio Grande cultivar in control treatment during 2010. Similarly highest concentration of TSS (4.55°Brix) was noted in Rio Grande cultivar with the application of P source 50-50 ratio. Whereas the fiber content (9.09%) were higher in fruits of Falcon cultivar during 2009. However the protein content (9.75%) and Ash (4.46%) was examined in Rio Grande cultivar with the application of P-source 50-50 and 75-25 ratio, respectively during 2010. The fruit pH and fat content was not significantly affected by the P-source. It was concluded that a combination of PM and TSP at 50-50 and 75-25 ratio may be used as an optimum fertilization dose for obtaining good quality of tomato crop.
 
 
 
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