Integrated resistance to cucumber seedling die-off disease caused by fungus

Abstract

This study was conducted with the aim of evaluating the possibility of mixing biological factors represented by the bacterial inoculum Pseudomonas flourescens, Bacillus subtilis and Eugenia caryphyllus powder, to find out their ability to control the growth of the fungus Alternaria alternata that causes the death of cucumber seedlings. The radial growth of the pathogen increased by 100%, and the clove powder and Rizolex showed an efficiency in inhibiting the radial growth of the pathogen amounted to 100% for the two treatments. The results of mixing the biological factors in the effect on germination of cucumber seeds showed that the treatment of bacteria flourescens P + clove powder reached 96%, followed by two treatments. The bacteria B.subtilis and clove powder alone amounted to 90 and 80%, respectively. The results of the field experiment showed that the treatment of P. flourescens bacteria increased the percentage of seedling germination by 80%, while the clove powder recorded the highest percentage in reducing the percentage of seedling death, which amounted to 9. %, and the results showed that the treatment of bacteria flourescens P. was superior in increasing growth indicators, as the seedling height averaged 16.6 cm, followed by The treatment of the bacterial inoculum B.subtilis reached 14.6 cm, and the average fresh and dry weight of the vegetative total was 11.22 and 2.43 g, respectively, in the treatment of the inoculum of bacteria flourescens P., while the average fresh and dry weight of the root total was 1 and 0.42 g, respectively, while the recorded Clove powder was treated with an average of 1.65 and 0.23 gm for the dry weight of shoots and roots, respectively.