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Articles by Aml R.M. Yousef
Total Records ( 2 ) for Aml R.M. Yousef
  Dorria M.M. Ahmed , Aml R.M. Yousef , Enas A.M. Ali and M. Abd El- Hady
  Objectives: This investigation was aimed to study the effect of foliar spraying with mono potassium phosphate (MKP) to maximize fruit and oil productivity and quality of Jatropha curcas trees grown under low quality of soil and water (Suez conditions). Methodology: Jatropha curcas trees received three different concentrations (0.5, 1.0 and 1.5%) of MKP at full bloom (once) and after fruit set (twice). Changes in leaf mineral content, flowering, fruit yield and seed oil content and their chemical characteristics of Jatropha curcas trees were determined. Results: The obtained results showed that all mono potassium phosphate spraying induced a remarked promotion in leaf mineral status. Also, enhanced yield and seed physical and chemical characteristics compared with control trees. The best results with regards to foliar application were obtained by spraying MKP at 1% once which superior to increase the number of flowers, fruits per inflorescences, fruit yield per tree and seed weight. A higher proportion of oil and less acidity recorded by mono potassium phosphate at 1.0% spraying once. The lowest peroxide value attained by spraying mono potassium phosphate at 0.5% twice. Conclusion: Foliar spraying of mono potassium phosphate at 1% once gave the best results in increasing the number of flowers, fruits per inflorescences, seed weight and a higher oil content with less acidity.
  Aml R.M. Yousef , Enas A.M. Ali , Dorria M.M. Ahmed and M. Abd El- Hady
  Objectives: This study has been done to investigate the effects of foliar spraying of potassium nitrate at different concentrations and times for increasing the fruit and oil productivity and quality of Jatropha curcas trees. Methodology: Jatropha curcas trees treated with three concentrations (0.5, 1.0 and 1.5%) of KNO3 either pre and/or post bloom. Changes in leaf mineral content, flowering, fruit yield and seed oil content and their chemical characteristics were determined. Several oil properties as well as oil content, acid, peroxide and iodine values were measured too. Results: The results showed that all foliar spraying with different potassium nitrate (KNO3) concentrations and times revealed a pronounced increase in leaf mineral contents. Also, KNO3 spraying enhanced fruit yield and seed physical and chemical characteristics compared with control trees. The best results, with regards to leave mineral N, P and K were found due to foliar application with 1.5% twice and 1% once. In addition spraying potassium nitrate at 1% once which superior to increase the number of flowers, fruits per inflorescences, seed weight and oil content. Total seed weight and volume were obtained under spraying potassium nitrate at 1.5% twice. Foliar spraying of potassium nitrate 1% had the highest content of seed oil and its iodine value. Meanwhile, a good oil quality that had lowest oil acidity and peroxide value was observed with potassium nitrate concentration at 1.5% compared to untreated trees (control). Conclusion: The potassium nitrate had a positive effect of leaf mineral content with improving fruit yield, seed physical and chemical properties with greatest results at 1% potassium nitrate sprayed once as compared with control.
 
 
 
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