Rhizobacterial, Fusarium Complex, and Fungicide Seed Treatments Regulate Shoot and Root Traits of Soybean Plants

2021 ◽  
Author(s):  
Anthony Adesemoye ◽  
Zahida H. Pervaiz ◽  
Lipi Parikh ◽  
Srikanth Kodati ◽  
Qingming Zhang ◽  
...  
Keyword(s):  
Root Traits ◽  
Seed Treatments ◽  
Soybean Plants

Frequency of isolation of species ofDiaportheandPhomopsisfrom soybean plants in Ontario and benefits of seed treatments

2007 ◽  
Vol 29 (4) ◽  
pp. 354-364 ◽  
Author(s):  
A. G. Xue ◽  
M. J. Morrison ◽  
E. Cober ◽  
T. R. Anderson ◽  
S. Rioux ◽  
...  
Keyword(s):  
Seed Treatments ◽  
Soybean Plants

scholarly journals Temporal Profile of Neonicotinoid Concentrations in Cotton, Corn, and Soybean Resulting from Insecticidal Seed Treatments

Agronomy ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1200
Author(s):  
Adam Whalen ◽  
Angus L. Catchot ◽  
Jeff Gore ◽  
Scott D. Stewart ◽  
Gus M. Lorenz ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Leaf Tissue ◽  
Sampling Period ◽  
Growth Stages ◽  
Seed Treatments ◽  
Tissue Samples ◽  
Plant Soil ◽  
The Mean ◽  
Soybean Plants ◽  
Mean Concentration

Neonicotinoids have been implicated as a contributing factor to the observed decreases in honey bee populations. It has been suggested that honey bees can be exposed to seed-treated neonicotinoids through pollen and nectar from treated plants. To investigate the uptake and persistence of neonicotinoids in plant tissue and soil, we conducted seed treatment trials with corn, cotton, and soybean planted in Mississippi, Arkansas, and Tennessee during the 2013 and 2014 growing seasons. Leaf tissue was collected and analyzed beginning shortly after emergence until plants began to flower to better understand how neonicotinoid concentrations change in plant tissues over time. The youngest leaf in the terminal of the plant was sampled as an indicator of the neonicotinoid concentrations within the plant. Soil samples were also collected and analyzed for neonicotinoid concentrations at the first and last sampling dates. The mean clothianidin concentrations in corn treated with Poncho® 250, 500, and 1250 seed treatments declined by 99.3, 99.3, and 97.8 percent, respectively, as the plants developed from seedlings to reproductive plants. The mean concentration of imidacloprid detected in Aeris®-treated cotton decreased by 99.6 percent during the sampling period. For cotton seed treated with Avicta® Duo, the mean concentrations of thiamethoxam and clothianidin in leaf tissue declined by 99.9 and 100 percent, respectively, by the time flowering occurred. There was a 99.9 percent reduction in the mean concentration of thiamethoxam by the time of flowering in leaf tissue from soybean treated with a CruiserMaxx® seed treatment. Mean clothianidin concentrations completely diminished (<1 ng/g) in CruiserMaxx®- and Poncho®/VOTiVO®-treated soybean plants by the time plants reached reproductive growth. The data for neonicotinoid concentrations in the soil were more variable than leaf tissue samples, and the reduction in neonicotinoid concentrations in leaf tissues did not closely correlate with concentrations in the soil. Our results suggest that neonicotinoid insecticides, when used as seed treatments in these crops, decline rapidly throughout vegetative growth stages. However, the biological impact on target or non-target arthropods was not examined.

Evidence for the involvement of jasmonic acid in the control of the stem-growth habit of soybean plants

1991 ◽  
Vol 83 (1) ◽  
pp. 22-26 ◽  
Author(s):  
Yasunori Koda ◽  
Koichi Yoshida ◽  
Yoshio Kikuta
Keyword(s):  
Jasmonic Acid ◽  
Growth Habit ◽  
Stem Growth ◽  
Soybean Plants

Experimentally altered rainfall regimes and host root traits affect grassland arbuscular mycorrhizal fungal communities

2019 ◽  
Author(s):  
Coline Deveautour ◽  
Suzanne Donn ◽  
Sally Power ◽  
Kirk Barnett ◽  
Jeff Powell
Keyword(s):  
Fungal Community ◽  
Community Assembly ◽  
Root Length ◽  
Specific Root Length ◽  
Root Traits ◽  
Arbuscular Mycorrhizal ◽  
Fungal Communities ◽  
Rainfall Regime ◽  
Precipitation Regimes ◽  
Rainfall Regimes

Future climate scenarios predict changes in rainfall regimes. These changes are expected to affect plants via effects on the expression of root traits associated with water and nutrient uptake. Associated microorganisms may also respond to these new precipitation regimes, either directly in response to changes in the soil environment or indirectly in response to altered root trait expression. We characterised arbuscular mycorrhizal (AM) fungal communities in an Australian grassland exposed to experimentally altered rainfall regimes. We used Illumina sequencing to assess the responses of AM fungal communities associated with four plant species sampled in different watering treatments and evaluated the extent to which shifts were associated with changes in root traits. We observed that altered rainfall regimes affected the composition but not the richness of the AM fungal communities, and we found distinctive communities in the increased rainfall treatment. We found no evidence of altered rainfall regime effects via changes in host physiology because none of the studied traits were affected by changes in rainfall. However, specific root length was observed to correlate with AM fungal richness, while concentrations of phosphorus and calcium in root tissue and the proportion of root length allocated to fine roots were correlated to community composition. Our study provides evidence that climate change and its effects on rainfall may influence AM fungal community assembly, as do plant traits related to plant nutrition and water uptake. We did not find evidence that host responses to altered rainfall drive AM fungal community assembly in this grassland ecosystem.

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