scholarly journals Response of Dry Bean Genotypes to Fusarium Root Rot, Caused by Fusarium solani f. sp. phaseoli, Under Field and Controlled Conditions

Plant Disease ◽  
2008 ◽  
Vol 92 (8) ◽  
pp. 1197-1200 ◽  
Author(s):  
V. N. Bilgi ◽  
C. A. Bradley ◽  
S. D. Khot ◽  
K. F. Grafton ◽  
J. B. Rasmussen

Fusarium root rot of dry bean (Phaseolus vulgaris), caused by Fusarium solani f. sp. phaseoli, is a major yield-limiting disease in North Dakota and Minnesota. Although a few sources of partial resistance are available, most commercial cultivars grown in this region are susceptible, especially in the red kidney bean market class. This study evaluated three methods of screening for resistance to Fusarium root rot. A sand-cornmeal inoculum layer method, spore suspension method, and paper towel method were used to evaluate 11 dry bean genotypes for resistance to Fusarium root rot under growth-chamber conditions. These same genotypes were also evaluated in field trials at Fargo, ND, and Park Rapids and Perham, MN, in 2005. In all trials, the small red genotype VAX 3 was found to have a consistently high level of resistance to Fusarium root rot and could be used as a source of resistance by dry bean breeders. Correlation analyses between field and growth-chamber root rot ratings indicated that all three growth-chamber methods had significantly (P ≤ 0.05) positive correlations with field results from Perham and Fargo, which suggests that all three methods could be used to screen germplasm efficiently for resistance to Fusarium root rot.

2022 ◽  
Vol 354 (11-12) ◽  
pp. 129-133
Author(s):  
A. Yu. Kekalo

Protecting wheat seed from phytopathogens is a popular topic for plant breeders. The objects requiring close attention and control on wheat are smut infections, pathogens of root rot. And if the pathogens of smut we have learned to fight quite effectively with, then microorganisms that infect underground parts of plants are controlled with less success and many questions in the system of protection against them remain controversial. The issue of reducing the pesticide load on agrocenoses, starting with the protection of seeds, also remains relevant. The article presents the results of field trials of means of protecting spring wheat seeds from root rot in 2019–2020, carried out within the framework of the state assignment at the Kurgan SRIA — branch of FSBSI UrFASRC, according to generally accepted methods. The aim of the research was to assess the biological, economic efficiency of the combined use of a chemical seed dressing agent and a biofungicide based on Bacillus subtilis in protecting wheat from soil-seed infections, to determine the competitiveness of an ecologized method of protecting seeds (reduced consumption rate of a chemical seed dressing agent in combination with biological fungicide). The obtained research results indicate that with a high level of damage to wheat by root rot (Fusarium, B. sorokiniana), the use of seed treatment with the studied preparations ensured the preservation of 10–12% of the yield, more efficiency was noted in the variants with the Oplot 0.5 l/t and the Oplot 0.3 l/t + Nodix Premium 0.3 l/t . The technical effectiveness of fungicides against wheat root rot ranged 44% for Nodix Premium to 85–86% for chemical protection and mixed use. An environmentally friendly method of protecting wheat seeds, which consists in using a 40% lower rate of a chemical dressing agent with a biopesticide, turned out to be competitive.


Plant Disease ◽  
2017 ◽  
Vol 101 (1) ◽  
pp. 252-252
Author(s):  
L. W. Zhu ◽  
X. M. Tang ◽  
T. Y. Lin ◽  
S. S. Zhou ◽  
P. Liu ◽  
...  

Plant Disease ◽  
2020 ◽  
Vol 104 (5) ◽  
pp. 1541
Author(s):  
Min Yang ◽  
Jingdong Cao ◽  
Yuanxian Zheng ◽  
Jiming Wang ◽  
Houfa Zhou ◽  
...  

2011 ◽  
Vol 77 (2) ◽  
pp. 132-135 ◽  
Author(s):  
Keisuke Tomioka ◽  
Yuuri Hirooka ◽  
Akane Takezaki ◽  
Takayuki Aoki ◽  
Toyozo Sato

Plant Disease ◽  
2021 ◽  
Author(s):  
Hui Yan ◽  
Berlin Nelson Jr

Fusarium root rot, caused by Fusarium solani and F. tricinctum, is a major soybean disease in the North Central United States. This study investigated the effects of the macroconidia density and the additive effects of soybean cyst nematode (SCN), Heterodera glycines, on the severity of Fusarium root rot. To determine the effect of spore density on severity, experiments were conducted in La Prairie silt loam soil in a greenhouse using conidial suspensions ranging from 101 to 106 macroconidia/ml soil. Root discoloration and lesion lengths on taproots increased as spore numbers increased, with significant effects of spore densities starting at 104 and 105 macroconidia/ml soil for F. solani and F. tricinctum, respectively. A non-linear sigmoid model was fitted to root discoloration against density, while a linear regression model was fitted to root lesion length against density. The interaction between the nematode at different egg densities with the two Fusarium species at 105 macroconidia/ml soil was investigated. In the greenhouse, root discoloration and lesion length were significantly greater in plants inoculated with Fusarium spp. and H. glycines at 10 eggs/ml soil or greater, compared to Fusarium spp. alone. In field trials, co-infestation of soil with the two Fusarium spp. and H. glycines significantly increased root rot severity at an egg density of 16.7 eggs/ml soil. The results indicated that the presence of SCN can increase severity of root rot caused by F. solani and F. tricinctum and egg density in the soil is an important factor in the interaction.


2017 ◽  
Vol 40 (1) ◽  
pp. 90-95 ◽  
Author(s):  
Jung-Wook Yang ◽  
Sang-Sik Nam ◽  
Hyeong-Un Lee ◽  
Kyu-Hwan Choi ◽  
Se-Gu Hwang ◽  
...  

2016 ◽  
Vol 103 ◽  
pp. 240-250 ◽  
Author(s):  
Pierre Eke ◽  
Gael Chatue Chatue ◽  
Louise Nana Wakam ◽  
Rufin Marie Toghueo Kouipou ◽  
Patrick Valère Tsouh Fokou ◽  
...  

Weed Science ◽  
1976 ◽  
Vol 24 (1) ◽  
pp. 11-15 ◽  
Author(s):  
Donald L. Wyse ◽  
William F. Meggitt ◽  
Donald Penner

Application of EPTC (S-ethyl dipropylthiocarbamate) at 3.4 and 4.5 kg/ha in 1972 increased root rot severity and reduced navy bean (Phaseolus vulgaris L.) yields in soil with an artificial root rot [Fusarium solani (Mart.) Appel and Wr. f. Phaseoli (Burk.) Snyd. and Hans.] inoculum level. EPTC at 3.4 kg/ha and chloroamben (3-amino-2,5-dichlorobenzoic acid) at 3.4 kg/ha in 1973 caused the greatest root rot severity and greatest decrease in yield. Dinoseb (2-sec-butyl-4,6-dinitrophenol) and fluorodifen (p-nitrophenyl α,α,α-trifluoro-2-nitro-p-tolyl ether) at 5 kg/ha interacted with root rot less than the other herbicides assayed. In the growth chamber at 23 C, EPTC at 3.4 kg/ha and alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl) acetanilide] at 2.8 kg/ha applied to navy bean grown in soil infested with F. solani reduced plant growth. Root rot injury was most severe in plants treated with EPTC at 20 C ambient temperature. Navy bean growth was reduced as the level of F. solani chlamydospore inoculum increased in the presence of EPTC.


2015 ◽  
Vol 16 (3) ◽  
pp. 136-145 ◽  
Author(s):  
Lyndon D. Porter ◽  
Julie S. Pasche ◽  
Weidong Chen ◽  
Robert M. Harveson

Fusarium root rot caused by Fusarium solani f. sp. pisi is a major pea disease worldwide. This diagnostic guide characterizes disease symptoms on pea plants and signs of the pathogen produced on artificial media. Hosts, geographic distribution of the pathogen, and techniques effective in isolating, storing, and inoculating with the pathogen are described. Accepted for publication 8 September 2015. Published 15 September 2015.


2019 ◽  
Vol 20 (1) ◽  
pp. 61-66
Author(s):  
Sarah J. Pethybridge ◽  
Beth K. Gugino ◽  
Julie R. Kikkert

White mold caused by Sclerotinia sclerotiorum is a serious disease affecting snap and dry bean production. Management is reliant upon fungicides to protect flowers from infection by ascospores. The inability to use conventional fungicides in organic production represents a substantial hurdle, although products approved by the National Organic Program (NOP) offer a substitute for disease management. In many cases, copper-based products are central to disease management programs in organic production, but the potential for crop loss from premature flower abscission in snap and dry bean owing to phytotoxicity when applied at high temperatures and for other undesirable environmental outcomes has driven interest in biopesticides registered by the NOP as alternatives. Five small-plot, replicated field trials (three in snap bean and two in light red kidney bean) were conducted across three years (2016 to 2018) to evaluate the efficacy of the biopesticide Double Nickel LC (Bacillus amyloliquefaciens D747 strain) for the management of white mold. Trials were inoculated with S. sclerotiorum ascospores to ensure uniform disease potential. The incidence of white mold in plots receiving two applications of Double Nickel LC (2.34 liters/ha) was not significantly different from the conventional fungicide standards. No significant difference in white mold incidence was found between 2.34 and 4.68 liters/ha of Double Nickel LC in either crop. Responses in pod yield components from improved white mold management in either crop were variable. The potential of Double Nickel LC for use in organic production of snap and light red kidney bean for management of white mold is discussed.


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