scholarly journals Evaluation of Cotton Cultivar and At-Plant Nematicide Application on Seasonal Populations of Reniform Nematode

Agronomy ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2166
Author(s):  
Whitney D. Crow ◽  
Angus L. Catchot ◽  
Darrin Dodds ◽  
Jeffery Gore ◽  
Donald R. Cook ◽  
...  
Keyword(s):  
United States ◽  
Plant Growth ◽  
Plant Biomass ◽  
Southern United States ◽  
Cotton Production ◽  
Growth Responses ◽  
Reniform Nematode ◽  
Rotylenchulus Reniformis ◽  
History Of ◽  
Cotton Cultivar

The reniform nematode, Rotylenchulus reniformis (Linford and Oliveira), remains a common, widespread nematode pest of cotton across the southern United States. Trials were conducted during 2017 at three non-irrigated locations: one location in Hamilton, MS, and two locations in Tchula, MS, in field settings with a history of cotton production and documented economically-damaging reniform nematode populations. Trials were designed to evaluate the response of two cotton cultivars to in-furrow nematicides consisting of aldicarb, 1,3-dichloropropene, and a non-treated control applied for nematode suppression. No significant interactions between cotton cultivar and nematicide were observed. However, treatment with 1,3-dichloropropene produced greater plant biomass, and plant height compared to aldicarb-treated cotton and the nontreated. Nematode densities were suppressed with the use of 1,3-dichloropropene compared to aldicarb and the non-treated control. The use of 1,3-dichloropropene resulted in positive early-season plant growth responses; however, these responses did not translate into greater yield.

scholarly journals A Meta-Analytical Approach on Arbuscular Mycorrhizal Fungi Inoculation Efficiency on Plant Growth and Nutrient Uptake

Agriculture ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 370
Author(s):  
Murugesan Chandrasekaran
Keyword(s):  
Plant Growth ◽  
Arbuscular Mycorrhizal Fungi ◽  
Nutrient Uptake ◽  
Mycorrhizal Fungi ◽  
Host Plants ◽  
Plant Biomass ◽  
Meta Analysis ◽  
Arbuscular Mycorrhizal ◽  
Growth Responses ◽  
Mycorrhizal Plants

Arbuscular mycorrhizal fungi (AMF) are obligate symbionts of higher plants which increase the growth and nutrient uptake of host plants. The primary objective was initiated based on analyzing the enormity of optimal effects upon AMF inoculation in a comparative bias between mycorrhizal and non-mycorrhizal plants stipulated on plant biomass and nutrient uptake. Consequently, in accomplishing the above-mentioned objective a vast literature was collected, analyzed, and evaluated to establish a weighted meta-analysis irrespective of AMF species, plant species, family and functional group, and experimental conditions in the context of beneficial effects of AMF. I found a significant increase in the shoot, root, and total biomass by 36.3%, 28.5%, and, 29.7%, respectively. Moreover, mycorrhizal plants significantly increased phosphorus, nitrogen, and potassium uptake by 36.3%, 22.1%, and 18.5%, respectively. Affirmatively upon cross-verification studies, plant growth parameters intensification was accredited to AMF (Rhizophagus fasciculatus followed by Funniliforme mosseae), plants (Triticum aestivum followed by Solanum lycopersicum), and plant functional groups (dicot, herbs, and perennial) were the additional vital important significant predictor variables of plant growth responses. Therefore, the meta-analysis concluded that the emancipated prominent root characteristics, increased morphological traits that eventually help the host plants for efficient phosphorus uptake, thereby enhancing plant biomass. The present analysis can be rationalized for any plant stress and assessment of any microbial agent that contributes to plant growth promotion.

Black Farmers, Agriculture, and Resistance

2018 ◽  
pp. 3-27
Author(s):  
Monica M. White
Keyword(s):  
United States ◽  
Civil Rights ◽  
Collective Agency ◽  
Southern United States ◽  
Agricultural Cooperatives ◽  
Universal Negro Improvement Association ◽  
Food And Agriculture ◽  
Black Farmers ◽  
History Of ◽  
Prefigurative Politics

Most accounts of African Americans’ relationship to the soil focus on oppression and exploitation. This book offers the untold history of Black farmers’ fight to stay on the land in the southern United States, using agricultural cooperatives as a basis for resistance and community self-determination. This chapter introduces slave gardens as resistance, the Colored Farmers Alliance, the Universal Negro Improvement Association, and food and agriculture in the civil rights and Black Power movements as precursors to the examples of black agricultural cooperatives in Freedom Farmers. These cooperatives demonstrate what White calls collective agency and community resilience, using the primary strategies of prefigurative politics, economic autonomy, and commons as praxis. The archival, ethnographic, and interview-based methods of the book are grounded in the African principle of sankofa: investigating the past to understand the present as a basis of forging a future of our own making.

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.

Conclusion

2021 ◽  
pp. 217-220
Author(s):  
Candace Bailey
Keyword(s):  
United States ◽  
Civil War ◽  
Social Status ◽  
Southern United States ◽  
Southern Women ◽  
Satisfactory Explanation ◽  
Women's Music ◽  
History Of ◽  
And Gender ◽  
The Impact

This history of women’s music in the southern United States—one taking into account regional practices—offers new perspectives into class, social aspirations, and gender; it differs substantially from composer-centric narratives. It is the first study to interrogate the impact of the Civil War on women’s music—how it affected repertory, performance circumstances, and careers. The dissimilar women examined here prove that a single, fixed signifier, such as cultural class, social status, parlor music, or domesticity cannot sufficiently account for southern women’s music practices. Gentility provides a more satisfactory explanation by allowing a nuanced examination of southern women—both white and of color—and their musicking.

scholarly journals History of Agriculture in the Southern United States to 1860

1933 ◽  
Vol 15 (3) ◽  
pp. 602
Author(s):  
Herbert Heaton ◽  
Lewis Cecil Gray
Keyword(s):  
United States ◽  
Southern United States ◽  
History Of Agriculture ◽  
History Of

scholarly journals Genetic Variability of Rotylenchulus reniformis

Plant Disease ◽  
2012 ◽  
Vol 96 (1) ◽  
pp. 30-36 ◽  
Author(s):  
Megan Leach ◽  
Paula Agudelo ◽  
Amy Lawton-Rauh
Keyword(s):  
United States ◽  
Genetic Variation ◽  
Southeastern United States ◽  
Genetic Connectivity ◽  
Group Method ◽  
Reniform Nematode ◽  
Rotylenchulus Reniformis ◽  
Pair Group ◽  
High Level ◽  
The Impact

Rotylenchulus reniformis, reniform nematode, is a polyphagous pest commonly found parasitizing cotton in the southeastern United States. We developed and optimized 10 polymorphic microsatellite loci found in reniform nematode and tested them on 160 individual reniform nematodes to determine informative genetic variation of isolates from the southeastern United States, Colombia, Japan, and from the species Rotylenchulus parvus. No significant gametic disequilibrium was detected between any pair of loci, and most loci were not in expected Hardy-Weinberg proportions. A positive FIS coefficient was observed at all 10 loci, suggesting a high level of inbreeding at these loci. Most isolate locations exhibited significant genotypic differentiation and moderate to very high genetic differentiation based on FST analysis. The most consistently differentiated isolates were found reproducing parthenogenetically in Japan. These isolates were also found to represent the most basal locality in this study based on unweighted pair group method with arithmetic mean (UPGMA) clustering analysis and were distinct from other localities based on STRUCTURE V 2.3 analysis. These results support previous reports suggesting that the parthenogenetically reproducing isolates from Japan are another species. Taken together, our results can serve as the foundation for more extensive characterization of population structure and genetic variation among isolates of R. reniformis variants to help discern the impact of alternative processes on genetic connectivity and differentiation in the genetically undercharacterized reniform nematode.

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