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emmarrogers

Frequent mowing puts poisonous weed into survival mode | ScienceDaily - 1 views

www.sciencedaily.com/...240603195751.htm

HSR HSR-2025 behavior biology environmental potential research idea botany

shared by emmarrogers on 04 Jun 24 - No Cached
  • The taproot went down further
  • More spikes popped out on the stem
  • The flowers became more toxic
  • ...8 more annotations...
  • Although studies have often highlighted weed fitness and defense traits resulting from disturbances like mowing, most were limited to foliar, or leaf, defenses, Kariyat said. That changed when Vasquez and fellow master's biology students at the University of Texas Rio Grande Valley monitored fields of mowed, unmowed and frequently mowed silverleaf nightshade in and around Edinburg, Texas.
  • "Alejandro's question was, 'how do these flowers differ between mowed and unmowed plants?'"
  • "You are trying to mow these plants so that the plants are getting eliminated," Kariyat said. "But what you are actually doing here, you are making them much worse, much stronger."
  • The observations of mowed, unmowed and frequently mowed areas with silverleaf nightshade provide evidence that could prompt further studies by weed scientists on best management practices, Kariyat said.
    • Sean Nash
      Sean Nash on 04 Jun 24
       
      Again... when you see a callout like this for more research in an area... especially one that might be feasible with some serious planning/organization... you might be on to something.
  • the study does provide more insight into the defensive capabilities of plants pitted against human disturbance
  • "Continuous mowing differentially affects floral defenses in the noxious and invasive weed Solanum elaeagnifolium in its native range."
  • Journal Reference: Alejandro Vasquez, Alexa Alaniz, Robert Dearth, Rupesh Kariyat. Continuous mowing differentially affects floral defenses in the noxious and invasive weed Solanum elaeagnifolium in its native range. Scientific Reports, 2024; 14 (1) DOI: 10.1038/s41598-024-58672-w
  • Solanum ptychanthum or black nightshade, and Solanum carolinense, or Carolina horsenettle, also produce toxic berries and are native to Arkansas.
    • emmarrogers
      emmarrogers on 04 Jun 24
       
      Could we possibly research different types of weeds similar to the silver Nightshade, like one of these plants?
  • Sean Nash on 04 Jun 24
     
    There is a TON of data that can be measured & analyzed in a study like this. Easier to do in a less time-dependent way in the lab, but easier and more realistic (in vivo) to do if you have access to similar fields that are mowed and unmowed to differing extents. So many variables to examine and consider here for how plants may change physiologically based upon how we interact with them. This goes beyond that analogy I always use for fast evolution in Honors Biology: how dandelion populations become shorter based upon frequent mowing. This gets into the physiological responses. Very cool methinks.
emmarrogers

Effects of Prometryn Exposure on Hepatopancreas Oxidative Stress and Intestinal Flora i... - 0 views

www.ncbi.nlm.nih.gov/...PMC10451815

crayfish pesticide HSR-2025 HSR environmental biology behavioralscience

shared by emmarrogers on 20 Sep 24 - No Cached
  • Eriocheir sinensis
    • emmarrogers
      emmarrogers on 20 Sep 24
       
      Chinese mitten crab
  • alternative to atrazine due to its low toxicity
  • In addition, due to its low toxicity to fish, prometryn can be applied directly to aquatic activities for the removal of harmful algae and weeds in aquaculture waters
  • ...3 more annotations...
  • However, there is a paucity of studies on the negative effects of prometryn on aquatic crustaceans.
  • could affect the physiological behavior of crustacean aquatic organisms
  • Previous studies have shown that the commonly used herbicides glyphosate and atrazine are capable of causing oxidative stress,
emmarrogers

The Effects of the Herbicide Metolachlor on Agonistic Behavior in the Crayfish, Orconec... - 0 views

link.springer.com/...s00244-007-9088-z

crayfish behavior HSR HSR-2025 science biology environmental behavioralscience

shared by emmarrogers on 20 Aug 24 - No Cached
  • Agonistic Behavior
    • emmarrogers
      emmarrogers on 20 Aug 24
       
      Any behavior related to fighting
  • Herbicide Metolachlor
    • emmarrogers
      emmarrogers on 20 Aug 24
       
      Metolachlor or S-metolachlor is a selective and systemic herbicide which control weeds. (Minnesota department of Agriculture)
  • 60 ppb, 70 ppb, and 80 ppb
    • emmarrogers
      emmarrogers on 20 Aug 24
       
      Parts per billion = ppb
  • ...1 more annotation...
  • metolachlor
    • emmarrogers
      emmarrogers on 20 Aug 24
       
      widely used on corn, soybeans, potatoes, sugar beets, sunflowers, and tomatoes. (Minnesota Department of agriculture)
emmarrogers

Securing our food supply for years to come: why farmers choose glyphosate to sustainabl... - 0 views

www.bayer.com/...sate-to-sustainably-grow-crops

crayfish HSR-2025 environmental glyphosate

shared by emmarrogers on 30 Mar 25 - No Cached
  • applied correctly,
    • emmarrogers
      emmarrogers on 30 Mar 25
       
      like that always happens
  • toxic weeds
    • emmarrogers
      emmarrogers on 30 Mar 25
       
      that ironic
  • The benefits are clear. But is glyphosate safe?
  • ...1 more annotation...
  • Bayer
    • emmarrogers
      emmarrogers on 30 Mar 25
       
      Company that own roundup
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