
	Asian Journal of Crop Science
	Year: 2010 \| Volume: 2 \| Issue: 3 \| Page No.: 137-146 DOI: 10.3923/ajcs.2010.137.146

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

Abstract: 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.

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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

URL: https://scialert.net/abstract/?doi=ajcs.2010.137.146

COMMENTS

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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