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Influence of Nitrogen Fertilizer and Foliar Application of Salicylic Acid on Wheat

Agricultural Sciences 2014年第13期5卷 1316-1321页

作者： Omar Maghawry Ibrahim Bakry Ahmed Bakry alice tawfeek thalooth Mohamed Farouk El-Karamany Plant Production Department Arid Lands Cultivation Research Institute City of Scientific Research and Technological Applications (SRTA-City) New Borg El-Arab Alexandria Egypt Field Crops Research Department National Research Centre Giza Egypt

Two cemented plots experiments were carried out during the winter seasons of 2012/2013 and 2013/2014, Soil Salinity Laboratory, Alexandria, Egypt, to study the effect of three levels of salicylic acid (SA) (0, 50, 100 ppm) and three rates of nitrogen fertilizer (75, 100, 125 kg N/feddan) on yield and yield components of wheat (Sakha 93). The experimental design was split plot with four replicates. The results indicated that increasing nitrogen fertilizer rates resulted in significant increase in plant height (cm), number of grain/spike, number of spikes/m2, 1000 grain weight (gm), grain yield (gm/plot), straw yield (gm/plot), and biological yield (gm/plot). Increasing salicylic acid rates resulted in significant increase in all the previous characters, in addition to grain weight/spike (gm). The interactions had no significant effect on the studied characters. The path analysis revealed that 1000 grain weight was the most important character with direct effect of 0.54 followed by number of spikes/m2 with direct effect of 0.33 followed by number of grain/spike with direct effect of 0.16.

关键词： Wheat Salicylic Acid Nitrogen Fertilizer Path Analysis

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Yield and Quality Response of Ryegrass, Egyptian Clover and Their Mixtures to Different Sources of Fertilizers

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Agricultural Sciences 2015年第1期6卷 137-145页

作者： alice Tawfik thalooth Gaber Abd-Latif Sary Haroon Mohamed El-Nagar Mohamed Farouk El-Kramany Mohamed Omer Kabesh Gehan Shaker Hanna Bakhoum Field Crops Research Department National Research Centre Giza Egypt Agronomy Department Faculty of Agriculture Benha University Benha Egypt

Two field experiments were conducted during two successive winter seasons of 2008/2009 and 2009/2010 to investigate the potentialities of mixing Egyptian clover with ryegrass under bio, organic and mineral fertilization treatments and their combination to increase forage yield and quality grown under sandy soil conditions. The experiment included the combination of five mixing ratios (Egyptian clover alone, ryegrass alone, 75% Egyptian clover: 25% ryegrass, 50% Egyptian clover: 50% ryegrass and 25% Egyptian clover: 75% ryegrass) and eight fertilizer sources, which include control, organic fertilization, bio fertilization, chemical fertilizer, organic + bio fertilizer, organic + chemical fertilizer, bio + chemical fertilizer and combination of organic and chemical and bio fertilizers. The obtained results indicate the superiority of 75% E. clover: 25% ryegrass mixture fertilizedby Bio + O + N in fresh and dry forage production. On the other hand, it reported the lowest dry weight of weeds g/m2. Chemical analysis of forage plants showed that the mixture of ?75% E. clover: 25% ryegrass surpassed that of other treatments yield for crude protein, ether extract and ash. The results also revealed that the highest record of DCP, crude fiber and TDNY was obtained by forage mixture of 75% E. clover: 25% ryegrass fertilized with Bio + O + N. Such higher yield of these characters hassecured a balanced ratio which is really needed for ruminants ration.

关键词： Rye Grass Egyptian Clover Forage Mixing Ratios Organic Bio and Chemical Fertilizers

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