ABSTRACT
The two Sunflower [Helianthus annuus L.] varieties i.e., Vedoc and Malabar were grown under four different N fertilization treatments i.e., 45, 60, 75 and 90 kg N/fed. And three times of application i.e., 21, 30, and 40 days from sowing in two types of doses i.e., low as 15 units and high as 30 units of Nitrogen during 2003 and 2004 seasons at the experimental farm, Faculty of Agriculture, Minufiya University. The application of the various tested fertilization treatments caused an increase in all studied traits except in the oil content. The treatment of 75 kg N/fed. gave the highest values for the most vegetative, yield and its components as well as oil yield. Variety Vedoc was better than cv. Malabar in all vegetative growth and all yield components characters under study, which lead to increase seed yield and oil yield. The maximum sunflower seed production with good quality was obtained by the application of 75 kg N/fed. which was added in three doses [LHH] as 15 units at 21 days, 30 units at 30 days and 30 units at 40 days after sowing for both tested varieties
ABSTRACT
Some trace element concentrations [manganese, iron, cupper, nickel, zinc, cadmium and lithium] were determined in the urinary stones, serum and 24 hour urine of 20 urinary stone patients using an atomic absorption spectrophotometric method. Thirty two calculi were examined; group I [12] were pure calcium oxalate, group II [9] were mixed calcium oxalate/uric acid and group III were pure uric acid. An attempt was made to compare the levels of these trace elements in calculi with the levels in normal hair as standard. The data obtained from serum and urine for 20 stone patiens were compared with those of 10 healthy individuals. Urinary manganese, nickel, zinc and lithium excretion and serum manganese, nickel and cadmium concentrations were statistically significantly lower for stone patients compared to those of healthy individuals. In groups I and II zinc content in stone was lower than that of hair. On the other hand, no difference in the concentrations of other trace elements could be found for stone patients and healthy control