EMS pony and dead grass

[fankino04]

Hi Just wondered if anyone has experience of grazing a pony on a paddock that has been sprayed with weedkiller (glyphosphate) to kill the grass. It was done a month ago and what's left of the grass is shrivelled up yellow / brown stuff so definitely dead now and manufacturers say its safe for animals after 10-14 days ( it's been a month). I'm just wondering if I need to strip graze it so pony doesn't get too much in one go, worried about if there's any sugar left for her to consume as she gas EMS. The front of the paddock is woodchipped so she has enough space to go out and then gradually extend the fence out but if there's no value and no harm then obviously I don't need to inch it out bit by bit. For context though even on woodchips if she has unsoaked hay she gets cresty so don't want to let her loose if the dead stuff still has as much sugar as hay would have.

 

[PurBee]

Considering glyphosate is an endocrine disruptor, i wouldnt ideally want any horse consuming the product/grass (no matter what the manufacturers say!) , let alone one with established endocrine issues:

Impact of Glyphosate on the Development of Insulin Resistance in Experimental Diabetic Rats: Role of NFκB Signalling Pathways

Glyphosate, an endocrine disruptor, has an adverse impact on human health through food and also has the potential to produce reactive oxygen species (ROS), which can lead to metabolic diseases. Glyphosate consumption from food has been shown to have a substantial part in insulin resistance...

www.mdpi.com

“Abstract​

Glyphosate, an endocrine disruptor, has an adverse impact on human health through food and also has the potential to produce reactive oxygen species (ROS), which can lead to metabolic diseases. Glyphosate consumption from food has been shown to have a substantial part in insulin resistance, making it a severe concern to those with type 2 diabetes (T2DM). However, minimal evidence exists on how glyphosate impacts insulin-mediated glucose oxidation in the liver. Hence the current study was performed to explore the potential of glyphosate toxicity on insulin signaling in the liver of experimental animals. For 16 weeks, male albino Wistar rats were given 50 mg, 100 mg and 250 mg/kg b. wt. of glyphosate orally. In the current study, glyphosate exposure group was linked to a rise in fasting sugar and insulin as well as a drop in serum testosterone. At the same time, in a dose dependent fashion, glyphosate exposure showed alternations in glucose metabolic enzymes. Glyphosate exposure resulted in a raise in H2O2 formation, LPO and a reduction in antioxidant levels those results in impact on membrane integrity and insulin receptor efficacy in the liver. It also registered a reduced levels of mRNA and protein expression of insulin receptor (IR), glucose transporter-2 (GLUT2) with concomitant increase in the production of proinflammatory factors such as JNK, IKKβ, NFkB, IL-6, IL-1β, and TNF-α as well as transcriptional factors like SREBP1c and PPAR-γ leading to pro-inflammation and cirrhosis in the liver which results in the development of insulin resistance and type 2 diabetes. Our present findings for the first time providing an evidence that exposure of glyphosate develops insulin resistance and type 2 diabetes by aggravating NFkB signaling pathway in liver.”

 

[sbloom]

Definitely not for the reasons stated above.

 

[fankino04]

Considering glyphosate is an endocrine disruptor, i wouldnt ideally want any horse consuming the product/grass (no matter what the manufacturers say!) , let alone one with established endocrine issues:

Impact of Glyphosate on the Development of Insulin Resistance in Experimental Diabetic Rats: Role of NFκB Signalling Pathways

Glyphosate, an endocrine disruptor, has an adverse impact on human health through food and also has the potential to produce reactive oxygen species (ROS), which can lead to metabolic diseases. Glyphosate consumption from food has been shown to have a substantial part in insulin resistance...

www.mdpi.com

“Abstract​

Glyphosate, an endocrine disruptor, has an adverse impact on human health through food and also has the potential to produce reactive oxygen species (ROS), which can lead to metabolic diseases. Glyphosate consumption from food has been shown to have a substantial part in insulin resistance, making it a severe concern to those with type 2 diabetes (T2DM). However, minimal evidence exists on how glyphosate impacts insulin-mediated glucose oxidation in the liver. Hence the current study was performed to explore the potential of glyphosate toxicity on insulin signaling in the liver of experimental animals. For 16 weeks, male albino Wistar rats were given 50 mg, 100 mg and 250 mg/kg b. wt. of glyphosate orally. In the current study, glyphosate exposure group was linked to a rise in fasting sugar and insulin as well as a drop in serum testosterone. At the same time, in a dose dependent fashion, glyphosate exposure showed alternations in glucose metabolic enzymes. Glyphosate exposure resulted in a raise in H2O2 formation, LPO and a reduction in antioxidant levels those results in impact on membrane integrity and insulin receptor efficacy in the liver. It also registered a reduced levels of mRNA and protein expression of insulin receptor (IR), glucose transporter-2 (GLUT2) with concomitant increase in the production of proinflammatory factors such as JNK, IKKβ, NFkB, IL-6, IL-1β, and TNF-α as well as transcriptional factors like SREBP1c and PPAR-γ leading to pro-inflammation and cirrhosis in the liver which results in the development of insulin resistance and type 2 diabetes. Our present findings for the first time providing an evidence that exposure of glyphosate develops insulin resistance and type 2 diabetes by aggravating NFkB signaling pathway in liver.”

Thanks, that very interesting, I wonder if its possible to get the grass analysed to check if any of the glyphosphate remains. I could always see if we could just add more woodchips if I pass the article on to the farm manager.

 

[Miss_Millie]

I wouldn't graze any kind of animal on grass that had been sprayed with glyphosate. It is carcinogenic.

 

[sbloom]

Thanks, that very interesting, I wonder if its possible to get the grass analysed to check if any of the glyphosphate remains. I could always see if we could just add more woodchips if I pass the article on to the farm manager.

It certainly persists in the soil, utterly not worth the risk.

 

[PinkvSantaboots]

It's going to be in the soil though I would think for a very long time I wouldn't put horses on it at all.

 

[PurBee]

Thanks, that very interesting, I wonder if its possible to get the grass analysed to check if any of the glyphosphate remains. I could always see if we could just add more woodchips if I pass the article on to the farm manager.

The other ingredients glyphosate is mixed with enables the glyphosate to be absorbed into the structure of the plant, aswell as aiding it to stick to the plant. There is wildely varying data on the half-life of glyphosate remaining in the soil, due to its ability to bind strongly to soil. Commercial farmers generally wait a year before re-seeding an area with glyphosate sensitive crops. The soil type/soil bacteria health, and rainfall amount all are factors which change how long is remains in the soil.

If the sprayed grass was short, i’d wait for it to break-down completely, so your pony sees nothing to eat. You’d be able to give the area for more exercise, as bare soil, with glyphosate in the soil, as the pony doesnt eat the soil (hopefully!).

Commercially roundup is used as a drying agent for certain crops to aid drying, like grains. (Barley and wheat commonly on @69% of uk grain crops when i last looked, hence why straw for feeding ems ponies is a bad idea)
Its sprayed mainly on the tall crop and then is harvested off the field within days, so the glyphosate just contacts plants and doesnt really get full-dose contact with soil. This then enables farmers to replant straight away in that field as the soil mostly remained clear of spraying due to the dense crop.
When using it for short crops, unless it’s very dense and the material cut and baled-off the land, the glyphosate will transfer to the soil while spraying, and while the plants break-down as they die-off.

It shouldnt take too long for your grass to die-off and break-down completely, then the area can be used as more space to roam.