EFFECT OF BIOFERTILIZATION ON SUGAR BEET YIELD AND ITS COMPONENTS | ||||
Fayoum Journal of Agricultural Research and Development | ||||
Article 4, Volume 25, Issue 2, July 2011, Page 37-50 PDF (512.09 K) | ||||
Document Type: Research articles. | ||||
DOI: 10.21608/fjard.2011.195500 | ||||
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Authors | ||||
H.A El-Fadaly1; I.H. El-Geddawy2; I, A. Abd El Rahman2; I. El-Hawary Fatma3 | ||||
1Microbiol. Dept., Damietta Fac. of Agric., Mansoura Univ., Damietta, Egypt | ||||
2Sugar crops. Res. Institute, Agric. Res. Center, Giza, Egypt | ||||
3Microbiol. Dept., Fac. of Agric, Mansoura Univ., Mansoura Egypt. | ||||
Abstract | ||||
Two field experiments were carried out at Sakha Agricultural Research Station, Kafer El-Sheikh Governorate, Egypt during the two successive seasons of 2006/2007 and 2007/2008. These experiments were performed to study the effect of biofertilization with some nitrogen fixing bacteria, Azotobacter chrococcum, Bacillus polymyx and either in individual form or in mixture of them. or Azospirillum brasilense this inoculation was performed under different levels of N-fertilizer, 25%, 50% and 100% of the recommended dose as well as their interaction on sugar beet plants. obtained results proved that: Application of N-mineral fertilizer led to significant increases in root dimensions (root length and diameter), tops and root yield, sucrose % of juice and sugar yield. Where using of 80 Kg N/fed raised the values of tops yield by 19.17 and 5.64 % in the 1st season corresponding by 8.64 and 11.62 % in the 2nd season compared with 20 and 40 Kg/N /fed. However, this root yield amounted by 47.8% and 23.9 % in the 1st season corresponding by 36.69% and 17.48 % in the 2nd season. Purity (%) of sugar beet root juice was insignificantly affected by the used N-level. Obtained results also revealed that use of these bacteria gave significant increases in root dimensions including root length and diameter, TSS (%), sucrose %and purity of juice, tops and root and sugar yield. Generally, the mixture of three used bacteria gave the best results of all parameters under study. The highest values of top and root yield by bacterial mixture treatment were 15.87&37.8 tons/fed in the1st and 2nd respectively season compared with 11.24 and 20.8 tons/fed, Regarding the interaction effect between the two examined factors N2-fixing bacteria and N-mineral fertilizer on sugar beet yield and yield components. Data pointed out that this interaction caused significant response of root dimensions, where the bacterial mixture with 80 kg N/fed produced the maximum values of root length and diameter which represented 26.48 and 25.40 cm of length and 16.77 and 15.93 cm of diameter in the 1st and 2nd season, respectively. It could be remarked that the most effective treatment on purity (%) and sugar yield was the combination between the three bacterial strain with 80 kg/N/fed. | ||||
Keywords | ||||
Biofertilization; sugar beet; yield and its components; Azotobacter chrococcum; Bacillus polymyx Azospirillum brasilense | ||||
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