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, 4Bacillus 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.
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Claims 5
Claim · model-written summary
Biofertilizer alone or with nitrogen fertilizer increased dill growth, yield and chemical constituents relative to untreated control.
- Taxon
- dill plant
Anethum graveolense0 - Treatment
- biofertilizer treatment alone or in combination with chemical N fertilizere0
- Outcome
- growth, yield and chemical constituentse0
- Direction
- increasede0
- Comparator
- untreated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
Claim · model-written summary
Biofertilizer plus two thirds of the recommended nitrogen dose gave the highest vegetative growth, oil yield, chlorophyll and NPK percentages.
- Taxon
- Anethum graveolens L.Anethum graveolenst0
- Treatment
- bio-fertilizer plus two third of recommended dose of nitrogen fertilizere0
- Outcome
- vegetative growth, oil yield, chlorophyll content and NPK percentagese0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“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”
t0“(Anethum graveolens L.) plant”
Claim · model-written summary
Carvone, limonene and apiol were the main volatile oil components.
- Taxon
- Anethum graveolens L.Anethum graveolenst0
- Outcome
- main components were carvone, limonene and apiole0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The GC analysis of volatile oil indicated that the main components were carvone, limonene and apiol”
t0“(Anethum graveolens L.) plant”
Claim · model-written summary
Biofertilization and chemical nitrogen treatments affected these volatile oil components.
- Taxon
- Anethum graveolens L.Anethum graveolenst0
- Treatment
- biofertilization and chemical N treatmentse0
- Outcome
- componentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These components were affected by biofertilization and chemical N treatments”
e1“main components were carvone, limonene and apiol”
t0“(Anethum graveolens L.) plant”
Claim · model-written summary
The authors recommend partial nitrogen fertilizer substitution with biofertilizer to improve dill yield and quality.
- Taxon
- dill plantAnethum graveolense0
- Outcome
- Partial substitution of mineral nitrogen fertilizer by bio-fertilizere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial substitution of mineral nitrogen fertilizer by bio-fertilizer was recommended to increase the yield as well as the quality of dill plant”
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