تقويم فعالية مسحوق بذور بعض نباتات العائلة الصليبية في تثبيط نمو بعض فطريات التربة الممرضة للتفاح

الملخص EN

The study was conducted to determine the effect of pathogenic fungi alone or in combination in apple seedlings variety Anna 45 days old, evaluation the efficiency of soil amendment with seeds powder of Cruciferous family plants and plant in protecting the seedlings from the infection by some pathogenic soil fungi.

Results of the glasshouse experiment to evaluate the efficiency of Cabbage seeds powder at rate 1 % on protect apple seedlings from the infection by some soil pathogenic fungi of Apple, achieved significant decrease in percentage of disease seventy and in the roof and shoo : dry weight, the percentage of disease severity in their treatments ranged 27.5-56.25 % compared with the control treatment which inoculated by the pathogenic fungi only which recorded 57.0-100 % disease severity.

Results of test the effect of pathogenic isolates belong to the specles Fusarium solani, Cylindrocarpon coprsontae and Verticillum dahliae alone or in combination in 45 days old Apple seedlings showed that all the isolates increased the percentage of disease severity copared with the control treatment, the percentage of disease seventy in the individual treatments ranged 68.75 -74.75 % , and the percentage of disease severity were 75.0-87.50 % and 100 % in the treatments of two and three isolates together respectively.

The pathogenic isolates which belong to the species Phoma betae, Rhizoctonia solani and Macrophomina phaseolina individually or in combination revealed high disease severity in 45 days old apple seedlings compared with the untreated control treatment , the percentage of disease severity in the individual treatments raided from 68.75-93.75 % and when two and three isolates together were 93.75-100 % and 100 % respectively.

Results of the laboratory tests .to evaluate the efficiency of Cabbase, Cauli flower.

Radish and Turnip seed powder on the inhibition of fungal growth of some pathogenic fungi showed the superionty of 1 % Cabbage seed powder in the inhibition of the isolates Rh.l ,Cy.l Vd.l and Fs.2 in percentage ranged 14.5-61.8 % which significantly differed from the control treatment which had 0 % growth inhibition.

Followed by Radisn seed powder which inhibit the growth of the two isolates Mp.l and Vd.l to 10.57 and 42.75 % respectively, also Turnip seed powder showed 13.8 and 22.4 % inhibition efficiency in growth of the two isolates Cy.l and Vd.l while the Cauliflower seed powder showed inhibition efficiency in the growth of the two isolates Mp.l and Vd-1 to 13.9 and 13.4 % respectively.