The soybean cyst nematode: pervasive and destructive to soybean production in the mid-western United States.

2021 ◽  
pp. 117-124
Author(s):  
Gregory L. Tylka
Keyword(s):  
United States ◽  
Life Cycle ◽  
Soybean Cyst Nematode ◽  
Plant Pathogens ◽  
Management Practices ◽  
Heterodera Glycines ◽  
Economic Importance ◽  
Cyst Nematode ◽  
Future Outlook ◽  
Damage Symptoms

Abstract This chapter focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of the soyabean cyst nematode, Heterodera glycines, a pervasive and destructive pest to soyabean production in the mid-western USA. Some information on its interaction with other plant pathogens, the efficacy and optimization of some recommended integrated nematode management practices and future outlook and research requirements are also presented.

Root-knot and reniform nematodes: double trouble for soybeans in the southern United States.

2021 ◽  
pp. 125-131
Author(s):  
Edward J. Sikora
Keyword(s):  
United States ◽  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Management Practices ◽  
Economic Importance ◽  
Southern United States ◽  
Rotylenchulus Reniformis ◽  
Future Outlook ◽  
Reniform Nematodes

Abstract This chapter focuses on the economic importance, host range, geographical distribution, symptoms of damage and biology and life cycle of root-knot and reniform nematodes (Meloidogyne spp. and Rotylenchulus reniformis) infesting soyabeans in southern USA. Some information on the efficacy and optimization of some recommended integrated nematode management practices and future outlook and research requirements are also presented.

Status of soybean cyst nematodes and integrated management in China.

2021 ◽  
pp. 111-116
Author(s):  
De-liang Peng
Keyword(s):  
Heterodera Glycines ◽  
Integrated Management ◽  
Management Strategies ◽  
Economic Importance ◽  
Cyst Nematode ◽  
Cyst Nematodes ◽  
Future Outlook ◽  
Nematode Management ◽  
Soybean Cyst Nematodes ◽  
Damage Symptoms

Abstract This chapter focuses on the host range, geographical distribution, economic importance, damage symptoms and biology and life cycle of the soyabean cyst nematode Heterodera glycines in China. Some information on their interactions with other nematodes and pathogens, efficacy and optimization of some recommended integrated nematode management systems and future outlook and research requirements for nematode management strategies are also presented.

Nematicidal activity of ethanol solutions on soybean cyst nematode Heterodera glycines

Nematology ◽  
2019 ◽  
Vol 22 (1) ◽  
pp. 111-121
Author(s):  
Luma A. Pedroso ◽  
Vicente P. Campos ◽  
Aline F. Barros ◽  
Julio C.P. Silva ◽  
Gustavo M. Assis ◽  
...  
Keyword(s):  
Lipid Content ◽  
Sustainable Management ◽  
Soybean Cyst Nematode ◽  
Management Practices ◽  
Heterodera Glycines ◽  
Cyst Nematode ◽  
Infested Soil ◽  
Tropical Regions ◽  
Second Stage ◽  
Low Concentrations

Summary The cyst nematode, Heterodera glycines, is a major pathogen of soybean in tropical regions, which demands novel sustainable management practices. In this work, the use of ethanol against H. glycines was evaluated as both a solution and a fumigant. On second-stage juveniles (J2) of H. glycines, ethanol at low concentration was more effective by direct dipping than by only fumigating the J2. Hatching was significantly reduced by direct dipping in ethanol solutions. Fumigation of H. glycines-infested soil with ethanol reduced infectivity by almost 100% and the number of eggs by about 67% at ethanol concentrations of 48% and 72%, respectively. Only the ethanol at 48% concentration significantly reduced the J2 lipid content, while J2 infectivity and the number of eggs were reduced by dipping at 6% ethanol. The J2 were internally altered by the ethanol solutions. Therefore, ethanol is toxic to H. glycines at low concentrations and affects its pathogenic behaviour rather than simply reducing the lipids.

The war against the pod nematode, Ditylenchus africanus, on groundnut in South Africa.

2021 ◽  
pp. 152-156
Author(s):  
Sonia Steenkamp
Keyword(s):  
South Africa ◽  
Life Cycle ◽  
Host Range ◽  
Plant Pathogens ◽  
Management Strategies ◽  
Economic Importance ◽  
Future Outlook ◽  
Nematode Management ◽  
Range Distribution

Abstract This chapter focuses on the economic importance, host range, distribution, symptoms of damage and biology and life cycle of the pod nematode, Ditylenchus africanus, infesting groundnut in South Africa. Some information on its interactions with other nematodes and plant pathogens, the efficacy and optimization of some recommended integrated nematode management strategies and future outlook and research requirements are also presented.

Integrated management of root-knot and other nematodes in food legumes.

2021 ◽  
pp. 132-137
Author(s):  
Philip A. Roberts
Keyword(s):  
Life Cycle ◽  
Host Range ◽  
Plant Pathogens ◽  
Integrated Management ◽  
Economic Importance ◽  
Common Beans ◽  
Future Outlook ◽  
Range Distribution ◽  
Food Legumes ◽  
Lima Beans

Abstract This chapter focuses on the economic importance, host range, distribution, symptoms of damage and biology and life cycle of root-knot and other nematodes in food legumes, such as cowpeas, common beans and lima beans, among others. Some information on their interactions with other nematodes and plant pathogens, the efficacy and optimization of some recommended integrated nematode management systems and future outlook and research requirements are also presented.

scholarly journals Known Distribution of the Soybean Cyst Nematode, Heterodera glycines, in the United States and Canada, 1954 to 2017

2017 ◽  
Vol 18 (3) ◽  
pp. 167-168 ◽  
Author(s):  
Gregory L. Tylka ◽  
Christopher C. Marett
Keyword(s):  
United States ◽  
New York ◽  
North America ◽  
North Dakota ◽  
Soybean Cyst Nematode ◽  
Heterodera Glycines ◽  
The United States ◽  
Cyst Nematode ◽  
The State ◽  
Introduced Pest

The soybean cyst nematode (SCN) is a major yield-reducing pathogen of soybeans in North America. The nematode is an introduced pest and, therefore, knowledge of the distribution of SCN can be helpful in identifying areas where scouting and management efforts should be focused. Such information is especially important because yield-reducing infestations of SCN can occur without obvious above-ground symptoms appearing. In late 2016, nematologists, plant pathologists, and state plant regulatory officials from the soybean-producing states in the United States and provinces in Canada were queried to obtain the latest information on where the nematode had been found. An updated map of the known distribution of SCN in North America was also created. There were 17 states in which SCN was newly found since 2014, when the map was last updated, including the first discovery of SCN in the state of New York. North Dakota was the state with the greatest number of counties, seven, in which SCN had been newly discovered since 2014. This updated information illustrates that the nematode continues to spread throughout the soybean-growing areas of the continent and emphasizes that continued efforts to scout for and manage SCN are warranted.

Yield loss caused by soybean cyst nematode, Heterodera glycines, in Iran

Nematology ◽  
2012 ◽  
Vol 14 (5) ◽  
pp. 589-593 ◽  
Author(s):  
Ramin Heydari ◽  
Zahra Tanha Maafi ◽  
Ebrahim Pourjam
Keyword(s):  
Soybean Cyst Nematode ◽  
Yield Loss ◽  
Heterodera Glycines ◽  
Block Design ◽  
Economic Importance ◽  
Cyst Nematode ◽  
Resistant Cultivar ◽  
Reproduction Rate ◽  
Seed Composition ◽  
Second Stage

The soybean cyst nematode, Heterodera glycines, is of major economic importance and widely distributed throughout the world. The effect of H. glycines HG Type 0 on seed yield of susceptible and resistant soybean cultivars was assessed with and without nematicide application in two naturally infested fields in Iran. Soybean cvs BP (susceptible) and DPX (resistant) were arranged in a randomised complete block design and fenamiphos 10G was used in-furrow as a treatment. The population levels of eggs and second-stage juveniles of H. glycines were determined in soil samples collected at planting and harvesting time. Although no above-ground symptoms of nematode infection were visible, mean yield was 48% greater for the resistant cultivar compared with the susceptible cultivar. The yield of cv. BP increased by 16% in plots treated with fenamiphos compared with untreated plots. The resistant cultivar suppressed the reproduction rate of H. glycines. Seed composition, including protein and oil, did not show significant differences between resistant and susceptible cultivars. This is the first demonstration of the yield loss caused by the soybean cyst nematode in Iran.

Hoplolaimus columbus: a prime candidate for site-specific management in cotton and soybean production.

2021 ◽  
pp. 80-86
Author(s):  
John Mueller
Keyword(s):  
South Carolina ◽  
Life Cycle ◽  
Management Strategies ◽  
Economic Importance ◽  
Nematode Control ◽  
Future Outlook ◽  
Site Specific ◽  
Hoplolaimus Columbus ◽  
Damage Symptoms ◽  
Specific Management

Abstract This paper focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of Hoplolaimus columbusinfesting cotton and soyabean in South Carolina, USA. Information on this pest to other nematodes and pathogens, the efficacy and optimization of some recommended integrated nematode management strategies and future outlook and research requirements in nematode control are also presented.

scholarly journals Known Distribution of the Soybean Cyst Nematode, Heterodera glycines, in the United States and Canada in 2020

2021 ◽  
Author(s):  
Gregory L. Tylka ◽  
Christopher C. Marett
Keyword(s):  
United States ◽  
Glycine Max ◽  
Health Professionals ◽  
Soybean Cyst Nematode ◽  
Heterodera Glycines ◽  
The United States ◽  
Cyst Nematode ◽  
Soil Sampling ◽  
Rural Municipalities ◽  
Canadian Provinces

In the United States and Canada, the most damaging pathogen of soybean, Glycine max, is the soybean cyst nematode (SCN), Heterodera glycines. Plant health professionals working for universities and state and provincial departments of agriculture in the United States and Canada are queried periodically about counties and rural municipalities that are newly known to be infested with SCN in their states and provinces. Such a census was conducted in 2020, and the results were compared with results of the most recent survey, published in 2017. Between 2017 and 2020, 55 new SCN-infested counties were reported from 11 U.S. states. Also, 24 new SCN-infested counties and rural municipalities were identified in the Canadian provinces of Manitoba, Ontario, and Quebec. A map of the known distribution of SCN in these two countries was updated. The results reveal steady expansion of the distribution of SCN throughout the United States and Canada, and the pest almost certainly will continue to spread among and within soybean-producing areas of these countries in the future. Therefore, continued scouting and soil sampling for detection of new SCN infestations are warranted as the first step toward successfully managing the pathogen.

Integrated nematode management of root lesion and root-knot nematodes in soybean in Brazil.

2021 ◽  
pp. 103-110
Author(s):  
Pedro Luiz Martins Soares ◽  
Daniel Dalvan Nascimento
Keyword(s):  
Life Cycle ◽  
Host Range ◽  
Geographical Distribution ◽  
Management Strategies ◽  
Meloidogyne Javanica ◽  
Economic Importance ◽  
Future Outlook ◽  
Root Knot Nematodes ◽  
Nematode Management ◽  
Damage Symptoms

Abstract This chapter focuses on the economic importance, host range, geographical distribution, damage symptoms and biology and life cycle of root lesion and root-knot nematodes infesting soyabean in Brazil, i.e. Pratylenchus brachyurus, Meloidogyne javanica and M. incognita. Some information on their interactions with other nematodes and pathogens, efficacy and optimization of some recommended integrated nematode management strategies and future outlook and research requirements for nematode management are also presented.

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