Efficacy of In-Furrow Fungicides for Management of Field Pea Root Rot Caused by Fusarium avenaceum and F. solani Under Greenhouse and Field Conditions

2018 ◽  
Vol 19 (3) ◽  
pp. 212-219
Author(s):  
Chryseis T. Modderman ◽  
Samuel Markell ◽  
Michael Wunsch ◽  
Julie S. Pasche
Keyword(s):  
Root Rot ◽  
Seed Treatment ◽  
Management Practices ◽  
Field Trials ◽  
Field Pea ◽  
Field Conditions ◽  
Traditional Management ◽  
Pea Root ◽  
Disease Pressure ◽  
Pea Root Rot

Field pea (Pisum sativum L.) root rot has resulted in substantial yield losses in North Dakota, with symptoms ranging from small lesions to complete root destruction. Traditional management practices such as seed treatment fungicides and crop rotation have proven insufficient under high disease pressure. The objective of this research was to determine the efficacy of in-furrow fungicide applications for management of field pea root rot under greenhouse and field conditions. In-furrow fungicides generally reduced root rot severity, sometimes significantly over the seed treatment in the field; however, the level of control varied across hosts and pathogens in both greenhouse and field trials. Prothioconazole, fluopyram, and penthiopyrad provided the most consistent results across trials. The results of these studies indicate that the use of in-furrow fungicides provides growers with another tool for managing Fusarium root rot.

Efficacy of Clonostachys rosea strain ACM941 and fungicide seed treatments for controlling the root rot complex of field pea

2003 ◽  
Vol 83 (3) ◽  
pp. 519-524 ◽  
Author(s):  
A. G. Xue
Keyword(s):  
Root Rot ◽  
Untreated Control ◽  
Seedling Emergence ◽  
Field Trials ◽  
Field Pea ◽  
Seed Treatments ◽  
Clonostachys Rosea ◽  
Pea Root ◽  
Pea Root Rot ◽  
Better Than

The efficacy of seed treatments with bioagent ACM941 (a strain of Clonostachys rosea), its formulated products GB116 and ACM941-Pro, and common fungicides for the control of pea root rot complex were examined in six field trials in western Canada from 1996 to 2000. The effects on seedling emergence, root rot severity, and yield varied among years. In trials 1 and 2 (1996–1997), none of the treatments significantly reduced root rot severity or increased yield. ACM941 + Thiram 75WP was the most effective treatment, increasing emergence by 17.4% and was significantly better than that of the untreated controls. In trials 3 and 4 (1997–1998), Apron FL alone and ACM941 + Apron FL were significantly better than the untreated control, increasing emergence by 6.2 and 7.7%, and yield by 10.8 and 11.5%, respectively. In trials 5 and 6 (1999–2000), AC M 941 and GB116 were equally the most effective treatments, increasing emergence by 11.5 and 12.2%, and yield by 8.2 and 6.3%, respectively. These effects were significantly greater than that of the untreated control, but not significantly different from those of Apron FL or Vitaflo-280. ACM941-Pro was developed and tested in 2000 only, and it increased emergence by 17.1% and reduced root rot severity by 29.6%. Key words: Bioagent, Clonostachys rosea, field pea, Pisum sativum, pea root rot complex (PRRC), seed treatment, fungicide

Management strategies to reduce losses caused by fusarium seedling blight of field pea

2013 ◽  
Vol 93 (4) ◽  
pp. 619-625 ◽  
Author(s):  
K. F. Chang ◽  
S. F. Hwang ◽  
H. U. Ahmed ◽  
B. D. Gossen ◽  
G. D. Turnbull ◽  
...  
Keyword(s):  
Root Rot ◽  
Field Experiments ◽  
Management Strategies ◽  
Stand Density ◽  
Field Trials ◽  
Field Pea ◽  
Seedling Blight ◽  
Inoculum Level ◽  
Fusarium Seedling Blight ◽  
Disease Pressure

Chang, K. F., Hwang, S. F., Ahmed, H. U., Gossen, B. D., Turnbull, G. D. and Strelkov, S. E. 2013. Management strategies to reduce losses caused by fusarium seedling blight of field pea. Can. J. Plant Sci. 93: 619–625. Fusarium seedling blight can cause substantial reductions in the stand density of field pea in western Canada. In greenhouse experiments, emergence decreased and root rot severity rose with increasing inoculum density. In field trials in 2007 and 2008 near Edmonton, AB, seeding at different depths and seeding dates did not consistently affect emergence or yield in Fusarium-infested soils. In field experiments, emergence declined significantly with each increase in inoculum level. Also, seed yield were reduced at high levels of disease pressure. Treatment of seed with Apron Maxx improved emergence, nodulation and yield of treatments challenged with inoculum of F. avenaceum in both greenhouse and field experiments. This research demonstrates the need to prevent seedling blight and root rot through proper seed treatment.

Metagenomic analysis of oomycete communities from the rhizosphere of field pea on the Canadian prairies

2017 ◽  
Vol 63 (9) ◽  
pp. 758-768 ◽  
Author(s):  
A. Esmaeili Taheri ◽  
S. Chatterton ◽  
B.D. Gossen ◽  
D.L. McLaren
Keyword(s):  
Root Rot ◽  
Agricultural Soils ◽  
Illumina Miseq ◽  
Field Pea ◽  
Metagenomic Analysis ◽  
Aphanomyces Euteiches ◽  
Canadian Prairies ◽  
Pea Root ◽  
Root Health ◽  
Pea Root Rot

Oomycetes are a diverse group of microorganisms; however, little is known about their composition and biodiversity in agroecosystems. Illumina MiSeq was used to determine the type and abundance of oomycetes associated with pea root rot in the Canadian prairies. Additional objectives of the study were to identify differences in oomycete communities associated with pea root health and compare oomycete communities among the 3 prairie provinces, where field peas are commonly cultivated. Samples of soil from the rhizosphere of field pea (Pisum sativum L.) were collected from patches of asymptomatic or diseased plants from 26 commercial fields in 2013 and 2014. Oomycete communities were characterized using metagenomic analysis of the ITS1 region on Illumina MiSeq. From 105 identified operational taxonomic units (OTUs), 45 and 16 oomycete OTUs were identified at species and genus levels, respectively. Pythium was the most prevalent genus and Pythium heterothallicum the most prevalent species in all 3 provinces in both 2013 and 2014. Aphanomyces euteiches, a very important pea root rot pathogen in regions of the prairies, was detected in 57% of sites but at very low abundance (<0.2%). Multivariate analysis revealed differences in the relative abundance of species in oomycete communities between asymptomatic and diseased sites, and among years and provinces. This study demonstrated that deep amplicon sequencing can provide information on the composition and diversity of oomycete communities in agricultural soils.

scholarly journals Biological control of Phaseolus vulgaris and Pisum sativum root rot disease using Trichoderma species

2021 ◽  
Vol 31 (1) ◽  
Author(s):  
Hammad Abdelwanees Ketta ◽  
Omar Abd El-Raouf Hewedy
Keyword(s):  
Phaseolus Vulgaris ◽  
Pisum Sativum ◽  
Common Bean ◽  
Root Rot ◽  
Fungal Pathogens ◽  
Plant Diseases ◽  
Root Rot Disease ◽  
Pea Root ◽  
Rot Disease ◽  
Pea Root Rot

Abstract Background Root rot pathogens reported to cause considerable losses in both the quality and productivity of common bean (Phaseolus vulgaris L.) and pea (Pisum sativum L.). It is an aggressive crop disease with detriment economic influence caused by Fusarium solani and Rhizoctonia solani among other soil-borne fungal pathogens. Destructive plant diseases such as root rot have been managed in the last decades using synthetic pesticides. Main body Seeking of economical and eco-friendly alternatives to combat aggressive soil-borne fungal pathogens that cause significant yield losses is urgently needed. Trichoderma emerged as promising antagonist that inhibits pathogens including those inducing root rot disease. Detailed studies for managing common bean and pea root rot disease using different Trichoderma species (T. harzianum, T. hamatum, T. viride, T. koningii, T. asperellum, T. atroviridae, T. lignorum, T. virens, T. longibrachiatum, T. cerinum, and T. album) were reported both in vitro and in vivo with promotion of plant growth and induction of systemic defense. The wide scale application of selected metabolites produced by Trichoderma spp. to induce host resistance and/or to promote crop yield, may represent a powerful tool for the implementation of integrated pest management strategies. Conclusions Biological management of common bean and pea root rot-inducing pathogens using various species of the Trichoderma fungus might have taken place during the recent years. Trichoderma species and their secondary metabolites are useful in the development of protection against root rot to bestow high-yielding common bean and pea crops.

Aphanomyces euteiches. [Descriptions of Fungi and Bacteria].

1978 ◽  
Author(s):  
D. J. Stamps
Keyword(s):  
Population Dynamics ◽  
Geographical Distribution ◽  
Root Rot ◽  
Aphanomyces Euteiches ◽  
Conifer Seedlings ◽  
Alternative Hosts ◽  
Pea Root ◽  
Pea Root Rot ◽  
Sweet Pea

Abstract A description is provided for Aphanomyces euteiches. Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Pea, Arabis, pansy, sweet pea, clover, bean, lupin, vetch, lucerne, Melilotus, barley, oats, Echinodorus brevipedicellatus. Conifer seedlings and other hosts were infected by inoculation. DISEASE: Root rot of pea. GEOGRAPHICAL DISTRIBUTION: Asia (Japan); Australia (Tasmania); Europe (UK, Denmark, France, Norway, Sweden, USSR); N. America (USA). (CMI Map 78, ed. 3, 1977). TRANSMISSION: Soil-borne, persisting in the soil for many years. Studies in Wisconsin suggested that A. euteiches may live as a weak parasite in the roots of many plants and occur naturally in some virgin soils (6, 523). Oospores were indicated to be the primary inocula for new outbreaks of pea root rot, zoospores the primary infective agents (39, 646). Survival between pea crops depended on oospore durability and possible alternative hosts, not saprophytic activity (41, 689). Studies were made of population dynamics in the soil (48, 2067) and penetration and infection of roots by zoospores (42, 287).

scholarly journals Concentration- and Time-Dependent Effects of Isothiocyanates Produced from Brassicaceae Shoot Tissues on the Pea Root Rot Pathogen Aphanomyces euteiches

2014 ◽  
Vol 62 (20) ◽  
pp. 4584-4591 ◽  
Author(s):  
Shakhawat Hossain ◽  
Göran Bergkvist ◽  
Kerstin Berglund ◽  
Robert Glinwood ◽  
Patrick Kabouw ◽  
...  
Keyword(s):  
Root Rot ◽  
Time Dependent ◽  
Aphanomyces Euteiches ◽  
Pea Root ◽  
Pea Root Rot

Management strategies to reduce losses caused by rhizoctonia seedling blight of field pea

2007 ◽  
Vol 87 (1) ◽  
pp. 145-155 ◽  
Author(s):  
S. F. Hwang ◽  
B. D. Gossen ◽  
R. L. Conner ◽  
K. F. Chang ◽  
G. D. Turnbull ◽  
...  
Keyword(s):  
Seed Yield ◽  
Seedling Establishment ◽  
Root Rot ◽  
Seed Treatment ◽  
Dry Weight ◽  
Field Pea ◽  
Seeding Density ◽  
Seedling Blight ◽  
Highly Pathogenic ◽  
Pea Seedlings

Seedling blight can cause substantial reductions in stand density of field pea on the Canadian prairies. Ninety-four isolates of Rhizoctonia solani were obtained from soil samples collected from 37 pea fields in 1999 in Alberta, Canada. Sixty isolates were characterized as anastomosis group (AG)-4 and 12 isolates as AG-2-1. Some of these isolates caused severe pre-emergence damping-off and were classified as highly pathogenic; 41 of the 44 highly pathogenic isolates were AG-4 and three were AG-2-1. Two highly pathogenic AG-4 isolates were used to assess the effect of inoculum density on survival and growth of field pea seedlings, and the impact of seeding date, seeding depth, soil temperature, seed damage, seed treatments and seeding density on seedling blight and root rot injury. As inoculum density increased, so did root rot severity, while seedling establishment, shoot dry weight and root dry weight declined. Under controlled conditions, seedling establishment in the noninoculated control increased as soil temperatures increased, but establishment and growth declined in inoculated treatments. In a temperature gradient study, seedling infection was highest when mean daily temperatures were 17.5°C or higher. In field trials over 8 station years, delayed seeding often resulted in reduced seedling establishment in inoculated treatments, although this trend was not consistent across sites or years. Seed yield consistently declined with later seeding dates. Seed treatment with fungicides (carbathiin + thiram, metalaxyl) improved establishment and productivity in inoculated treatments, especially where seed was damaged prior to planting. Seeding depth had no impact on root rot severity. Emergence and seed yield increased with seeding density, but increasing density beyond 90 seeds m-2 did not result in proportionately higher yields. These results indicate that a combination of seed treatment and early seeding can reduce Rhizoctonia injury to pea seedlings under field conditions. Key words: Pisum sativum, Rhizoctonia solani (AG-4), management, seeding depth, seeding rate

Role of soil amendment and repeated cropping in the management of pea root rot

2004 ◽  
Vol 44 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Vinay Sagar ◽  
SK Sugha
Keyword(s):  
Root Rot ◽  
Soil Amendment ◽  
Pea Root ◽  
Pea Root Rot
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