scholarly journals Development of Crown and Root Rot Disease of Tomato Under Irrigation with Saline Water

2005 ◽  
Vol 95 (12) ◽  
pp. 1438-1444 ◽  
Author(s):  
Shachaf Triky-Dotan ◽  
Uri Yermiyahu ◽  
Jaacov Katan ◽  
Abraham Gamliel
Keyword(s):  
Field Experiment ◽  
Fresh Water ◽  
Root Rot ◽  
Saline Water ◽  
Tap Water ◽  
Disease Incidence ◽  
Disease Onset ◽  
Root Rot Disease ◽  
Crown And Root Rot ◽  
Rot Disease

We studied the effect of water salinity on the incidence and severity of crown and root rot disease of tomato, as well as on the pathogen and on the plant's response to the pathogen. Irrigation with saline water significantly increased disease severity in tomato transplants inoculated with Fusarium oxysporum f. sp. radicis-lycopersici, and mineral fertilization further increased it. In one field experiment, disease incidence in plots irrigated with saline water (electrical conductivity [EC] = 3.2 ± 0.1 dS m-1) and in those irrigated with fresh water (EC = 0.4 ± 0.1 dS m-1) was 75 and 38%, respectively. Disease onset was earlier and yield was lower in plots irrigated with saline water. In a second field experiment, final disease incidence 250 days after planting, was 12% in plants which had been irrigated with saline water (EC = 4.6 ± 0.1 dS m-1) and 4% in those irrigated with fresh water (EC = 1.2 ± 0.1 dS m-1). Irrigation of tomato transplants with 20 mM NaCl did not inhibit plant development, but partial inhibition was observed at higher NaCl concentrations. Growth of the pathogen in culture or survival of conidia added to soil were not affected by saline water. Plants which were preirrigated with saline water were more severely diseased than those preirrigated with tap water. It was concluded that disease increases effected by saline water are associated with the latter's effect on plant response.

scholarly journals The Effect of Biochars and Endophytic Bacteria on Growth and Root Rot Disease Incidence of Fusarium Infested Narrow-Leafed Lupin (Lupinus angustifolius L.)

2020 ◽  
Vol 8 (4) ◽  
pp. 496
Author(s):  
Dilfuza Egamberdieva ◽  
Vyacheslav Shurigin ◽  
Burak Alaylar ◽  
Hua Ma ◽  
Marina E. H. Müller ◽  
...  
Keyword(s):  
Plant Growth ◽  
Root Rot ◽  
Endophytic Bacteria ◽  
Growth Parameters ◽  
Disease Incidence ◽  
Dry Weight ◽  
Microbial Interactions ◽  
Root Rot Disease ◽  
Root Dry Weight ◽  
Rot Disease

The effects of biochar on plant growth vary depending on the applied biochar type, study site environmental conditions, microbial species, and plant–microbial interactions. The objectives of the present study were therefore to assess 1) the response of growth parameters of lupin and root disease incidence to the application of three biochar types in a loamy sandy soil, and 2) the role of endophytic bacteria in biological control of root rot disease incidence in lupin after the amendment of soil with different biochar types. As biochar types we tested (i) hydrochar (HTC) from maize silage, (ii) pyrolysis char from maize (MBC), and (iii) pyrolysis char from wood (WBC) at three different concentrations (1%, 2%, and 3% of char as soil amendments). There were no significant effects in lupin shoot and root growth in soils amended with WBC at any of the concentrations. MBC did not affect plant growth except for root dry weight at 2% MBC. HTC char at 2% concentration, significantly increased the root dry weight of lupin by 54–75%, and shoot dry weight by 21–25%. Lupin plants grown in soil amended with 2% and 3% WBC and MBC chars showed 40–50% and 10–20% disease symptoms, respectively. Plants grown in soil without biochar and with HTC char were healthy, and no disease incidence occurred. Pseudomonas putida L2 and Stenotrophomonas pavanii L8 isolates demonstrated a disease reduction compared to un-inoculated plants under MBC and WBC amended soil that was infested with Fusarium solani.

scholarly journals Induction of systemic resistance against Fusarium crown and root rot disease by blast processing

2015 ◽  
Vol 10 (1) ◽  
pp. 262-269 ◽  
Author(s):  
Mohsen Mohamed Elsharkawy ◽  
Tatsuya Hase ◽  
Yusuke Yagi ◽  
Masafumi Shimizu ◽  
Mitsuro Hyakumachi
Keyword(s):  
Root Rot ◽  
Systemic Resistance ◽  
Root Rot Disease ◽  
Crown And Root Rot ◽  
Rot Disease

Susceptibility assessment of bell pepper genotypes to crown and root rot disease

2013 ◽  
Vol 47 (8) ◽  
pp. 944-953 ◽  
Author(s):  
Mehdi Nasr Esfahani ◽  
Abbas Nasehi ◽  
Pegah Rahmanshirazi ◽  
Hajar Ghadirian ◽  
Farnaz Abed Ashtiani
Keyword(s):  
Root Rot ◽  
Bell Pepper ◽  
Susceptibility Assessment ◽  
Root Rot Disease ◽  
Crown And Root Rot ◽  
Rot Disease

Screening of wild Solanum rootstock to manage dry root rot disease (Macrophomina phaseolina) in brinjal

1970 ◽  
pp. 34
Author(s):  
J. Sherly, R. Renuka
Keyword(s):  
Root Rot ◽  
Disease Incidence ◽  
Macrophomina Phaseolina ◽  
Solanum Species ◽  
Wild Solanum Species ◽  
Root Rot Disease ◽  
House Condition ◽  
Rot Disease ◽  
Cent Disease ◽  
Wild Solanum

Five wild Solanum species were screened against dry root rot disease in glass house condition with commonly cultivated brinjal as control. The disease was scored at different day’s interval on 30th, 45th and 60th days after planting (DAP). Among the wild species screened and evaluated the species S. torvum was observed without any disease incidence i.e (0). The least per cent of disease incidence was observed in S. incanum (38.60%) which was followed by S. xanthocarpum (42.80%), S. viarum (64.20%) and CO2 (78.50 %) susceptible check at 30 DAP. Secondary metabolites were analysed from both wild and control plants. Based on the per cent disease incidence values S. torvum was graded as ‘Resistant’ against M. phaseolina and can be recommended as a best rootstock for brinjal under varying climatic condition especially where the dry climate prevails.

scholarly journals Efficacy of soil solarization on black root rot disease and speculation on its leverage on nematodes and weeds of strawberry in Egypt

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Mahfouz M. M. Abd-Elgawad ◽  
Ibrahim E. Elshahawy ◽  
Farid Abd-El-Kareem
Keyword(s):  
Root Rot ◽  
Disease Incidence ◽  
Fungal Species ◽  
Management Program ◽  
Hot Water ◽  
Soil Solarization ◽  
Black Root Rot ◽  
Beneficial Effects ◽  
Root Rot Disease ◽  
Rot Disease

Abstract Background Strawberry (Fragaria ananassa Duch.) is an economically important crop in Egypt. Yet complex black root rot disease of strawberry caused by Fusarium solani, Rhizoctonia solani, and Pythium sp. can cause considerable yield losses. Therefore, this study aimed at evaluating different aspects of soil solarization against this disease. Such an evaluation would better be viewed in the context of other beneficial effects of soil solarization on nematodes and weeds. Materials/methods Growth agar disks, growth suspension, and resting stages of strawberry black root rot fungi were evaluated at different temperatures and exposure times using digital hot water bath. Cloth bags artificially infested with single fungal species were buried into the soil before soil solarization at soil depths of 1–10, 11–20, and 21–30 cm at three spots of each plot for each of the abovementioned fungi for 3, 6, or 9 weeks. The disease incidence and severity in solarized and un-solarized soil was compared with the application of the fungicide Actamyl. Effects of soil solarization on nematodes and weeds were also consulted. Results The lethal temperature to F. solani, Pythium sp., and R. solani was 58, 58, and 56 °C, respectively when exposure time was 1 min. Chlamydospores were killed at 62 °C while sclerotia were killed at 58 °C in hot water for 1 min. Maximum soil temperature in solarized soil was raised by 15, 14, and 12 °C at depths of 1–10, 11–20, and 21–30 cm as compared with non-solarized soil. Solarization for 3, 6, and 9 weeks significantly reduced the disease incidence and severity and increased the strawberry yield. Complete reduction in total count of all tested fungi was obtained after 9 weeks at all tested depths. A review of collective soil pest and pathogen control via solarization documented its beneficial application. Conclusion The study may exploit hot months in Egypt for soil solarization against the serious root rot disease either singly or in an integrated pest management program.

scholarly journals Occurrence and isolation of some Fusarium species associated with crown and root rot disease in some wheat fields of Duhok, IKR, Iraq

2018 ◽  
Vol 2ndInt.Conf.AGR (Special Issue) ◽  
pp. 331-342
Author(s):  
Bareen Sidqi Shareef Al-Tovi Al-Tovi ◽  
◽  
Raed Abduljabbar Haleem Haleem ◽  
Keyword(s):  
Root Rot ◽  
Fusarium Species ◽  
Root Rot Disease ◽  
Crown And Root Rot ◽  
Rot Disease

scholarly journals Effect of some Bioagents on Root-Rot Disease Incidence on Bean Plants

2012 ◽  
Vol 40 (2) ◽  
pp. 113-129
Author(s):  
Maisa Abd El-Moneim ◽  
Manal Gad El-Mola ◽  
Samy Gaafer
Keyword(s):  
Root Rot ◽  
Disease Incidence ◽  
Root Rot Disease ◽  
Bean Plants ◽  
Rot Disease
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