Efficiency of rhizobium leguminosarum as affected by certain herbicides and nematocides

Abstract: Broad beans, planted in pots, were treated with the herbicides Dinitramine and Methazol at the rates of ½ , 1 , and 2 liters /feddan and the nematocides DBCP and Aldicarb at the rates of 10 , 20 , and 40 liters or kilograms / feddan . The chemicals were added at the time of planting or 28 days after with the exception of DBCP, which had no effect, application of the compounds at the time of planting caused a significant reduction in yield. Application of the chemicals 28 days after Planting, however, had no significant harmful effect on the yield .
Broad beans seedlings were also grown in agar tubes treated with 1, 10, and 100 ppm of Dinitramine or Methazol, or 20, 200, and 2,000 ppm of DBCP and Aldicarb. Nodulation was completely absent in all treatments with the exception of plants grown with 20 ppm Aldicarb, where four nodules were formed, compared with 22 on the control plants. Growth of shoots was stunted , particularly with Aldicarb and DBCP at 200 and 2, 000 ppm and Dinitramine at all the concentrations tested .
Growth of Rhizobium leguminosarum strains M 360, M 361 and M 362 in medium 79, containing 1, 10 and 100 ppm of Dinitramine and Methazol and 20,200, and 2000 ppm of Aldicarb and DBCP was estimated . In general, all strains were more tolerant to Dinitramine and Aldicarb, especially at low concentrations. DBCP and Methazol caused an inhibitory effect on the growth of the strains tested, except strain M 362 which was not affected by 200 ppm and stimulated by 20ppm of DBCP
Publication year 1975
Pages 725-731
Availability location المعمل المركزى لبحوث الحشائش - شارع الجامعة - الجيزة
Availability number
Organization Name
serial title Zbl. Bakt.Abt. II, Bd.
Author(s) from ARC
External authors (outside ARC)
    M . S . Embabi Department of Weed Research , Plant Pathology , and Microbiology ,
    Y . A . Hamdi Department of Weed Research , Plant Pathology , and Microbiology ,
Agris Categories Weeds and weed control
AGROVOC
TERMS		 Faba beans. Herbicides. Nematicides. Rhizobium leguminosarum.
Proposed Agrovoc time of application;pots and agar tubes;
Publication Type Journal
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