Partial substitution of mineral nitrogen fertilizer by bio-fertilizer on (Anethum graveolens L.) plant

Abstract

A field experiment was conducted at the Experimental Farm of the Pharmaceutical Department, Agriculture college, Giza, Egypt to study the effect of partial substitution of mineral nitrogen fertilizer by biofertilizer and their effects on the growth, yield and chemical constituents of dill plant during the two successive seasons of 2007/2008 and 2008/2009. Because of the great importance of volatile oil, its composition was also investigated in this study. Five strains of bacteria (1-Azotobacter chroococcum, 2-Azospirillum lipoferum, 3-Bacillus polymyxa, 4-Bacillus megatherium and 5-Pseudomonas fluorescens) were mixed in equal parts and used as biofertilizer in this experiment. The biofertilizer treatment was applied alone or in combination with 1/3, 2/3 or full recommended dose of mineral nitrogen fertilizer. The results indicated that applying biofertilizer treatment alone or in combination with chemical N fertilizer increased the growth, yield and chemical constituents of dill plant compared to the untreated control. The highest values of vegetative growth, oil yield, chlorophyll content and NPK percentages were recorded by the treatment of bio-fertilizer plus two third of recommended dose of nitrogen fertilizer. The lowest values in this respect were obtained by control plants during two seasons. The GC analysis of volatile oil indicated that the main components were carvone, limonene and apiol. These components were affected by biofertilization and chemical N treatments. Partial substitution of mineral nitrogen fertilizer by bio-fertilizer was recommended to increase the yield as well as the quality of dill plant. By applying the treatment of bio-fertilizer plus two third of recommended dose of nitrogen fertilizer we can save the quantity of N chemical fertilizer used and obtain high quality product. The results of this study gave also the possibility of shifting toward clean agriculture.

Effect of Nitrogen and Bio-Fertilization With Different Planting Distances on Improving the Growth and Quality of Beet Yield and Its Effect on Digestion by in-Vitro Gas Production Technique.

“…The best results were recorded with T1 in leaves and roots without bio-fertilizer were 52.41 and 73.66%, respectively. Finding results agree with those obtained by Hellal et al (2011) who showed that the utilization chemical N fertilizer alone or combined with bio-fertilizers treatments alone led to increasing yield and carbohydrates. Abdel-Gwad et al (2008) reported that the crude protein and ash of fodder beets were significantly increased by increasing nitrogen fertilizer level, while crude fibers and NFE take an opposite trend.…”

Effect of INM on Growth and Yield Attributes of Dill Seed (Anethum graveolens L.) Under North Gujarat Agro-Climatic Condition

“…Application of inorganic with organic manure might have supplied the adequate and continuous amount of nutrient at different stages due to release of sufficient amount of nutrient by mineralization at a constant level that resulted in higher plant growth. The results are conformity with those reported by Selvarajan and Chezhiyan, (2001), Derzi et al, (2005) and Hellal et al, (2011).…”

Effect of Mineral and Bio- Fertilization on Vegetative Growth and Flowering of Anthurium andreanum L. Plants under Greenhouse Condition

“…For the interaction, mineral fertilizer NPK in combination with different concentration of biofertilizer treatments (ADY) resulted the highest content of the total chlorophyll compared with the control in both seasons. Furthermore, the highest significant increase in the total chlorophyll content was obtained using 15.0 g / plant of NPK fertilizer plus bio-fertilizer at 6.0 g / l (ADY) as compared with the control.Such increase in photosynthetic pigments formation could be attributed to the role of yeast cytokinins delaying the aging of leaves by reducing the degradation of chlorophyll and enhancing the protein and RNA synthesis (Castelfranco and Beale 1983).These results were agreement with Hellal et al (2011) on dill plants.…”