Effect of bioagents, fungicides as well as nitrogen and phosphorus fertilizers on; A-Controlling of white mould disease of snap bean plants (Phaseolus vulgaris L.) and its effect on vegetative growth and chemical composition. Annals of Agric. Sci., Moshtohor, 41(4): 1501-1520, (2003).
|Authors:||Wafaa A. Fekry; Abou El-Salehein, E.H. and Faten M. Abdel-Latif|
|Keywords:||bioagents, fungicides, nitrogen and phosphorus fertilizers, Controlling, white mould , snap bean plants, vegetative growth and chemical composition.|
|Journal:||Annals of Agric. Sci., Moshtohor,|
|Paper Link:||Not Available|
|Full paper||Faten Mahmoud Abdel-Latif_PAPER_Faten-2003-1.pdf|
|Supplementary materials||Not Available|
This study was conducted at the experimental Farm of the Faculty of Agriculture, Moshtohor to investigate the effect of two bioagents, one of the fungicides as well as nitrogen and phosphorus fertilization on the percentage of white mould infection, growth and chemical composition of snap bean plants, (Phaseolus vulgaris L.) c.v. Bronco. The first part of the experiment was carried out at the laboratory and greenhouse, both the two bioagents (Tricoderma harzianum and Bacillus subtilis) and fungicide (Benlate-50) reduced mycelial growth of Sclerotinia sclerotiorum. In the greenhouse, the results indicated that the percentage of infected bean plants with Sclerotinia has been reduced by inoculation the seeds before sowing by any one of two studied bioagents or the fungicide. The second part of the experiment was carried out at the field. Seed inoculation by the same two bioagents and fungicide each alone (which were used in the first part of this study) before sowing as well as fertilizing with low amounts of some macro-elements (N and P) showed that inoculated seeds with Tricoderma followed by Benlate-50 and then Bacillus decreased the percentage of natural infection of S. sclerotorum. In this concern, the results indicate that these treatments were the most effective, which resulted in the highest values of growth parameters of bean plants (plant height, number of leaves and the fresh and dry weight of both leaves and branches of plant) and its minerals content (N and K content and their uptake by plant). Such results were true at both seasons of this study. In addition, Bacillus treatment resulted in the highest values of P concentration in plants. Using the level 20kg N/fed. combined with 31 kg P2O5/fed. produced the highest values of different studied characteristics of vegetative growth and its chemical composition. The interactional effect of Tricoderma or Benlate-50 within NP fertilizers (20 N + 31 P2O5 kg /fed.) resulted in the highest values of most studied characters.