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Plant Pathology Journal
eISSN: 1812-5425
pISSN: 1812-5387

Editor-in-Chief:  Mohamed Abdul Rahman Elwakil
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Research Article
Green Chemicals and Bio-agents for Controlling Damping-off Diseases of Sugar Beet and Scaling up the Yield and Quality
Mohamed Abdul Rahman Elwakil, Mohamed Ahmed El-Metwally and Nehal Fathy El-Emam
Background and Objective: Sugar beet is one of the cash crops grown in temperate and cold zones of the world. In Egypt, it thrives in the northern part of the country. It comprises about 30% of total sugar production. Both foliage and pulps are feed of high value for the domestic animals. Since several soil-borne fungi attack this crop causing a significant reduction in the production, the present investigation aimed to evaluate the effectiveness of selected antioxidants including GAWDA formulation along with Trichoderma fungus and organic fertilizers (compost) to induce resistance against the root rot disease along with their possible role on increasing the yield and quality. Materials and Methods: In vitro studies were carried out to select the efficient concentration of the tested antioxidants on reducing the growth of the target pathogens. In vivo studies were applied in the field plots at Mansoura University Campus during the two successful seasons of 2015 and 2016. The growth parameters as well as the root weight and their quality characters were recorded. Data were statistically analyzed by CoStat 6.3 software of analysis of variance at p<0.05 as outlined by Duncan. Results: Soaking seeds in water solution of GAWDA® formulation at a concentration of 4 g L–1 for 12 hours before planting and air dried for 1 h followed by coating them with Trichoderma harazianum (T. harazianum) before planting in soil supplemented with the composted agricultural residues significantly decreased the damping-off disease and scaled up the yield and quality. Conclusion: Results addresses a ramping up in the yield and quality of sugar beet as well as control damping-off disease when treated with friendly environmental materials.
Research Article
Disease Assessment Key for White Rust Disease Caused by Albugo candida, in Rapeseed-Mustard
Khajan Singh Bisht, Meenakshi Rana, Pooja Upadhyay and R.P. Awasthi
Background and Objective: White rust disease caused by pathogen Albugo candida (A. candida) (Pers. Ex. Lev.) Kuntze. (A. Cruciferarum S.F. Gray) is one of the major diseases, responsible in reducing the yield of Rapeseed-Mustard (Brassica sp.). The main objective of this study was planned to develop photographic disease assessment keys for White rust of Rapeseed-Mustard. However, till now only diagrammatic or numerical assessment keys have been reported for screening of Rapeseed-Mustard germplasm against White rust disease but none is available on the basis of their actual photographs. Materials and Methods: Disease severity was taken on transparent graph paper. Pictures of disease free cotyledons and leaf, less than 5, 5-10, 11-25, 26-50% and more than 50% area covered by white rust pustules were observed for assessment key. Results: Rapeseed-Mustard plants were screened from seedling to maturity stage against White rust disease. The rating scale was developed from original field photographs with all above ground parts of infected plant viz. cotyledons, pods and leaves. Conclusion: In present study, the key was prepared for assessment of disease severity at cotyledonary leaf stage, pod stage and true leaf stage of plant. This would be helpful for consistent assessment of white rust disease as well as other leaf spot disease of Brassica sp.

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