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Asian Journal of Crop Science
  Year: 2010 | Volume: 2 | Issue: 3 | Page No.: 137-146
DOI: 10.3923/ajcs.2010.137.146
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Effect of Bio- and Chemical Fertilization on Growth of Sunflower (Helianthus annuus L.) at South Valley Area

Gehan G. Mostafa and A.A. Abo-Baker

Effect of bio- and chemical fertilizers, separately and in different combinations, on the growth of sunflower (Helianthus annuus L.) was studied to reduce the chemical fertilizers used, maximizing their use efficiency and to obtain highest growth and productive parameters. The biofertilizers used as inoculums for seeds treatment of sunflower cv. Geza 1 were Azospirillum (nitrogen fixing bacteria, N.F.B.) and Bacillus polymyxa (phosphate dissolving bacteria, P.D.B.) and their mixture. Both bacterial inoculants and their mixture show an increase in growth parameters, nutrients content and yield when compared to the control (full dose of NPK chemical fertilization). The result reveals that biofertilization treatments of Azospirillum + Bacillus plus 100% chemical fertilizers produced the highest values in all growth and yield parameters compared with the control (full dose of chemical fertilization alone). The results also indicated that biofertilization, beside its ability to improve the nutrient supply in the soil, also increases the efficiency of added chemical fertilization.
PDF Fulltext XML References Citation Report Citation
  •    Effects of Different Nitrogen Fertilizer Levels on Sunflower Growth and Yield Attributes
  •    Diversity of Azotobacter and Azospirillum in Rhizosphere of Different Crop Rotations in Eastern Uttar Pradesh of India
  •    Effect of Nitrogen Fertilizer on the Levels of Some Nutrients, Anti-nutrients and Toxic Substances in Hibiscus sabdariffa
  •    Enrichment of Biogas Slurry Vermicompost with Azotobacter chroococcum and Bacillus megaterium
  •    N2 Fixation, Nutrient Accumulation and Plant Growth Promotion by Rhizobacteria in Association with Oil Palm Seedlings
  •    Effect of Two Biofertilizers on Growth Parameters, Yield Characters, Nitrogenous Components, Nucleic Acids Content, Minerals, Oil Content, Protein Profiles and DNA Banding Pattern of Sunflower (Helianthus annus L. cv. Vedock) Yield
  •    Effects of (Azotobacter and Azosprillium) Inoculants and Chemical Fertilizers on Growth and Productivity of Canola (Brassica napus L.)
How to cite this article:

Gehan G. Mostafa and A.A. Abo-Baker, 2010. Effect of Bio- and Chemical Fertilization on Growth of Sunflower (Helianthus annuus L.) at South Valley Area. Asian Journal of Crop Science, 2: 137-146.

DOI: 10.3923/ajcs.2010.137.146


05 October, 2010
gehan gaber mostafa aly:
this an excellant papper to decrease the chemical fertilization and the environment mor safety




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