Posted: 2/22/2015 12:49:08 PM EDT
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Or is it weed grower?
When I was in the chemical business we sold the fire out of this stuff but I guess it's been dumbed down because I mixed(heavily)a whole bottle and applied it to he weeds in my beds and I see no effect whatsoever. We've had no rain at all. What gives? |
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Quoted:
Or is it weed grower? When I was in the chemical business we sold the fire out of this stuff but I guess it's been dumbed down because I mixed(heavily)a whole bottle and applied it to he weeds in my beds and I see no effect whatsoever. We've had no rain at all. What gives? You mixed it with water, meaning you diluted it? |
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Or is it weed grower? When I was in the chemical business we sold the fire out of this stuff but I guess it's been dumbed down because I mixed(heavily)a whole bottle and applied it to he weeds in my beds and I see no effect whatsoever. We've had no rain at all. What gives? I'm guessing you used the concentrate. I mixed up two batches last weekend at 10 oz per gallon instead of the recommended 6 oz and it seemed to work fairly decent. However, it sure does not have the punch it a few years ago. The stuff used to kill everything down to the dirt without having to bump up the concentration. |
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Formulations and tradenames[edit] Glyphosate is marketed in the United States and worldwide by many agrochemical companies, in different solution strengths and with various adjuvants, under dozens of tradenames.[28][29][30][31] As of 2013, it was the world's largest-selling herbicide, and Chinese manufacturers collectively are the world's largest producers of glyphosate and its precursors.[32] Manufacturers include Bayer, Dow AgroSciences, Du Pont, Cenex/Land O’Lakes, Helena, Monsanto, Platte, Riverside/Terra, and Zeneca.[31] Glyphosate is an acid molecule, so it is formulated as a salt for packaging and handling. Various salt formulations include isopropylamine, diammonium, monoammonium, or potassium as the counterion. Some brands include more than one salt. Some companies report their product as acid equivalent (ae) of glyphosate acid, or some report it as active ingredient (ai) of glyphosate plus the salt, and others report both. To compare performance of different formulations, knowledge of how the products were formulated is needed. Since the salt does not contribute to weed control and different salts have different weights, the acid equivalent is a more accurate method of expressing and comparing concentrations.[33] Adjuvant loading refers to the amount of adjuvant[34][35] already added to the glyphosate product. Fully loaded products contain all the necessary adjuvants, including surfactant; some contain no adjuvant system, while other products contain only a limited amount of adjuvant (minimal or partial loading) and additional surfactants must be added to the spray tank before application.[33] As of 2000 (just before Monsanto's patent on glyphosate expired), over 400 commercial adjuvants from over 34 different companies were available for use in commercial agriculture.[36][37] Products are supplied most commonly in formulations of 120, 240, 360, 480, and 680 g/l of active ingredient. The most common formulation in agriculture is 360 g/l, either alone or with added cationic surfactants. For 360 g/l formulations, European regulations allow applications of up to 12 l/ha for control of perennial weeds such as couch grass. More commonly, rates of 3 l/ha are practiced for control of annual weeds between crops.[38] TL:DR - The specific brand and their formulation of the salts can make a difference in effectiveness. Glyphosate works best against broad leafed plants. |
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I use glyphosate extensively to kill weeds in parks, right-of-ways, medians, etc. This time of year it is difficult due to the temperature. When it's under 50 the weeds do not metabolize the chemical quickly. Waiting until the temp is over 50, preferably 60+, will increase the effectiveness. For henbit and general broadleaf weeds I mix a 5% solution. When it is warmer a 2.5% solution will work fairly well, but I need a quick burn down right now. I would not expect results in 12 hours. There might be some effect, but it won't be noticeable. Remember that gluphosate is foliar- it enter the plant through the leaves, travels down the stalk into the roots. I usually don't expect to see results for several days when it's this cool. If you applied during warm weather and don't see results try checking the ph of the water you used to mix. If the ph is over 7.0 it needs to be buffered to around 6.5. |
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It works slow when it's cold.
I sprayed a new garden plot two weeks ago and ran the plow across it this morning after church. Weeds were about half dead. Would probably take another two weeks for a complete kill. Weeds can also develop roundup resistance on their own after multiple generations of spraying, but that's more rare. |
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Last week the weeds came up strong. My neighbors don't take care of their lawns for the most part. Its hard to keep a yard nice, around here anyway.
I have to use lots of Roundup to get it to work. Got to leave the weeds till they are dead. When I spray and cut within a couple of days, the Roundup seems to be useless. |
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It works slow when it's cold. I sprayed a new garden plot two weeks ago and ran the plow across it this morning after church. Weeds were about half dead. Would probably take another two weeks for a complete kill. Weeds can also develop roundup resistance on their own after multiple generations of spraying, but that's more rare. Yup, you need warm sunny days to get the kill on. We sprayed late in the season (October) to kill off some newly aquired fields which were chock full of Johnson Grass. It took a couple weeks to get a decent kill. At home I have grown to prefer the "Ground Clear" along fence lines and other spot treatments. That being said it'd be a poor choice if you were wanting to plant something after the application as it claims to have a longer effect than round-up. |
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Quoted:
Or is it weed grower? When I was in the chemical business we sold the fire out of this stuff but I guess it's been dumbed down because I mixed(heavily)a whole bottle and applied it to he weeds in my beds and I see no effect whatsoever. We've had no rain at all. What gives? Man up, get out there on your hands and knees and pull those weeds like grandma used to! I don't like supporting companies like Monsanto. Just all around evil company. Pull your weeds, it's good exercise, and keeps your soil healthy. |
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Man up, get out there on your hands and knees and pull those weeds like grandma used to! I don't like supporting companies like Monsanto. Just all around evil company. Pull your weeds, it's good exercise, and keeps your soil healthy. Quoted:
Quoted:
Or is it weed grower? When I was in the chemical business we sold the fire out of this stuff but I guess it's been dumbed down because I mixed(heavily)a whole bottle and applied it to he weeds in my beds and I see no effect whatsoever. We've had no rain at all. What gives? Man up, get out there on your hands and knees and pull those weeds like grandma used to! I don't like supporting companies like Monsanto. Just all around evil company. Pull your weeds, it's good exercise, and keeps your soil healthy. That's what the wife says. Although, today I was out there covering up some plants and I saw yellow where I sprayed, so it is working. |
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It works - you just have to be patient. Cold weather and drought don't help things. Go spray a few days after a rain on a warm day and it will knock the shit of the weeds.
When cold I use higher doses. I always spray the generic brand it is much cheaper and seems to work the same. |
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You can get an off brand concentrate glyphosate cheap, that will last forever for home use. I have on occasion directly applied to nut grass. If it grows from the ground, this stuff can/will kill it.
Not recommending but given as an example. The suggestions above recommending it is most effective in warm weather are correct, and adhere to the instructions. http://www.amazon.com/gp/product/B00ARKS3XO/ref=pd_lpo_sbs_dp_ss_2/177-5793007-2852266?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=lpo-top-stripe-1&pf_rd_r=0KZB2CGGBR1T9HYCD0QE&pf_rd_t=201&pf_rd_p=1944687582&pf_rd_i=B007XZ84O4 |
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It works - you just have to be patient. Cold weather and drought don't help things. Go spray a few days after a rain on a warm day and it will knock the shit of the weeds. When cold I use higher doses. I always spray the generic brand it is much cheaper and seems to work the same. Definitely use a generic glyphosate. If you have a Tractor Supply nearby they will have some. The brand name doesn't matter. |
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I put out about 20 gallons of roundup, probably another 12 of 2,4D two weeks ago. If I was hand pulling, I'd probably still be there. Isn't that the reason to have kids? That's mine, I'm getting tired of doing yard work by myself. Need about 3 kids to do all the work, then i can sit on my ass! Haha! If only that would actually workout...... |
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It works - you just have to be patient. Cold weather and drought don't help things. Go spray a few days after a rain on a warm day and it will knock the shit of the weeds. When cold I use higher doses. I always spray the generic brand it is much cheaper and seems to work the same. I buy it from the co-op. It is called glystar I think. Comes in a 2.5 gallon jug of concentrate for around $50. The 2.5 gallons will make a ton of spray. If you are using 3 ounces to the gallon it will make 85 gallons of spray. |
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I buy it from the co-op. It is called glystar I think. Comes in a 2.5 gallon jug of concentrate for around $50. The 2.5 gallons will make a ton of spray. If you are using 3 ounces to the gallon it will make 85 gallons of spray. Quoted:
Quoted:
It works - you just have to be patient. Cold weather and drought don't help things. Go spray a few days after a rain on a warm day and it will knock the shit of the weeds. When cold I use higher doses. I always spray the generic brand it is much cheaper and seems to work the same. I buy it from the co-op. It is called glystar I think. Comes in a 2.5 gallon jug of concentrate for around $50. The 2.5 gallons will make a ton of spray. If you are using 3 ounces to the gallon it will make 85 gallons of spray. According to my calculations, it makes 106 gallons of spray. 
If you read the little book that comes with it, you will find mixing it stronger than the government recommended amount is a federal offense. Your admission of doing this on the internetz is the same as pleading guilty in court, since everything on the internetz is true. Please report to the nearest federal detention facility. |
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Not all con entrate glyphosate is the same concentration, so there can be different amounts of chemical in the mix. Follow label directions for whichever product you use. A 2.5% solution will take care of most weeds. A 5% solution will take care of the tougher weeds. A 10% solution is for woody weeds. Use a surfactant if the glyphosate you buy doesn't include it in their product- some do and some don't. A mix concentration over 10% does not increase effectiveness. If you are having bad results check the ph of your water. If it is 7.5 or higher the chemical can be inert as soon as you mix it. My city uses well water and my ph is 8.5. High mineral content in the water can affect the chemical also. If glyphosate alone isn't killing the weeds fast enough another chemical like diquat can be Dded but you are taking the risk of burning the weed too fast. If ghe chemical doesn't make it to the roots before the leaves are down the plant will return. Do not mow or weedeat before applying or for a few days after. Glyphosate has a foliar vector- it needs to be taken in through the leaves. Cold weather slows it down. apply over 50* preferably over 60*. |
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TL:DR - The specific brand and their formulation of the salts can make a difference in effectiveness. Glyphosate works best against broad leafed plants. +1 The "inactive" ingredients in herbicide formulations can have a huge impact on the performance. The generic glyphosates do not get the same dispersants/surfactants as Monsanto's Roundup. There is a difference in performance and concentrations required. |