Abstract
Field experiments were conducted to evaluate control of 90- to 100-cm-tall ragweed parthenium in a noncropped situation in Haryana State, India, during 2000 and 2001. Atrazine, 2,4-D ethyl ester, atrazine plus 2,4-D, metribuzin, metsulfuron, chlorimuron, glufosinate with and without surfactant, glyphosate with and without surfactant, and glyphosate formulations MON 8793 and 8794 were sprayed on ragweed parthenium. Also, the effect of water quality was studied with flat-fan and flood-fan nozzles using glyphosate and its formulation MON 8793 against ragweed parthenium and associated weeds. Glyphosate MON 8793 and 8794 at 3.6 kg ae/ha provided excellent control of ragweed parthenium followed by glyphosate at 2.7 or 5.4 kg/ha, with no recovery until 18 wk after treatment (WAT). Addition of 0.1% v/v surfactant (MON 0818) to glyphosate at 2.7 kg/ha provided similar control to that of glyphosate alone at 5.4 kg/ha. Other herbicides failed to provide satisfactory control of ragweed parthenium. In the water quality study, glyphosate at 2.7 and 5.4 kg/ha and glyphosate MON 8793 at 2.7 and 3.6 kg/ha provided similar control of ragweed parthenium at 18 WAT. Glyphosate was antagonized less by tap water (0.45 mM Ca) than canal (0.7 mM Ca) and hand-pump water (1 mM Ca). Neither glyphosate nor glyphosate MON 8793 provided good control of purple nutsedge, velvetleaf, garden spurge, threelobe false mallow, jimsonweed, giant milkweed, Indian jujube, or tropical spiderwort, but crowfootgrass, green foxtail, sprawling signalgrass, and spiny amaranth were controlled. Glyphosate at 5.4 kg/ha and glyphosate MON 8793 at 3.6 kg/ha provided more than 80% control of bermudagrass at 8 WAT, which was significantly better than the 2.7 kg/ha rate. Flat-fan nozzles provided better efficacy of applied herbicides than flood-fan nozzles at 4 WAT on ragweed parthenium.
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Claims 14
Claim · model-written summary
Glyphosate MON 8793 and 8794 at 3.6 kg ae/ha provided excellent control of ragweed parthenium.
- Taxon
- ragweed partheniume0
- Treatment
- Glyphosate MON 8793 and 8794 at 3.6 kg ae/hae0
- Outcome
- excellent control of ragweed partheniume0
Not reportedComparatorDirection
Verbatim
e0“Glyphosate MON 8793 and 8794 at 3.6 kg ae/ha provided excellent control of ragweed parthenium”
Claim · model-written summary
Glyphosate at 2.7 or 5.4 kg/ha also controlled ragweed parthenium, with no recovery until 18 weeks after treatment.
- Taxon
- ragweed partheniumt0
- Treatment
- glyphosate at 2.7 or 5.4 kg/hae0
- Outcome
- no recoverye0
- Qualifier
- until 18 wk after treatment (WAT)e0
Not reportedComparatorDirection
Verbatim
e0“glyphosate at 2.7 or 5.4 kg/ha, with no recovery until 18 wk after treatment (WAT)”
t0“Ragweed Parthenium”
Claim · model-written summary
Adding 0.1% v/v surfactant (MON 0818) to glyphosate at 2.7 kg/ha gave control similar to glyphosate alone at 5.4 kg/ha.
Verbatim
t0“Ragweed Parthenium”
e0“Addition of 0.1% v/v surfactant (MON 0818) to glyphosate at 2.7 kg/ha provided similar control to that of glyphosate alone at 5.4 kg/ha”
Claim · model-written summary
Herbicides other than the glyphosate treatments failed to give satisfactory control of ragweed parthenium.
- Taxon
- ragweed partheniume0
- Treatment
- Other herbicidese0
- Outcome
- satisfactory control of ragweed partheniume0
Not reportedComparatorDirection
Verbatim
e0“Other herbicides failed to provide satisfactory control of ragweed parthenium”
Claim · model-written summary
In the water quality study, glyphosate at 2.7 and 5.4 kg/ha and glyphosate MON 8793 at 2.7 and 3.6 kg/ha gave similar control of ragweed parthenium at 18 WAT.
- Taxon
- ragweed partheniume0
- Treatment
- glyphosate at 2.7 and 5.4 kg/ha and glyphosate MON 8793 at 2.7 and 3.6 kg/hae0
- Outcome
- control of ragweed partheniume0
- Direction
- similare0
- Qualifier
- at 18 WATe0
Not reportedComparator
Verbatim
e0“glyphosate at 2.7 and 5.4 kg/ha and glyphosate MON 8793 at 2.7 and 3.6 kg/ha provided similar control of ragweed parthenium at 18 WAT”
Claim · model-written summary
Glyphosate was antagonized less by tap water than by canal water and hand-pump water.
Verbatim
t0“Ragweed Parthenium”
e0“Glyphosate was antagonized less by tap water (0.45 mM Ca) than canal (0.7 mM Ca) and hand-pump water (1 mM Ca)”
Claim · model-written summary
Neither glyphosate nor glyphosate MON 8793 gave good control of purple nutsedge, velvetleaf or garden spurge.
- Taxon
- purple nutsedge, velvetleaf, garden spurgee0
- Treatment
- glyphosatee0
- Outcome
- good controle0
- Qualifier
- glyphosate MON 8793e0
Not reportedComparatorDirection
Verbatim
e0“Neither glyphosate nor glyphosate MON 8793 provided good control of purple nutsedge, velvetleaf, garden spurge, threelobe false mallow, jimsonweed, giant milkweed, Indian jujube, or tropical spiderwort”
Claim · model-written summary
Neither glyphosate nor glyphosate MON 8793 gave good control of threelobe false mallow, jimsonweed or giant milkweed.
- Taxon
- threelobe false mallow, jimsonweed, giant milkweede0
- Treatment
- glyphosatee0
- Outcome
- good controle0
- Qualifier
- glyphosate MON 8793e0
Not reportedComparatorDirection
Verbatim
e0“Neither glyphosate nor glyphosate MON 8793 provided good control of purple nutsedge, velvetleaf, garden spurge, threelobe false mallow, jimsonweed, giant milkweed, Indian jujube, or tropical spiderwort”
Claim · model-written summary
Neither glyphosate nor glyphosate MON 8793 gave good control of Indian jujube or tropical spiderwort.
- Taxon
- Indian jujube, or tropical spiderworte0
- Treatment
- glyphosatee0
- Outcome
- good controle0
- Qualifier
- glyphosate MON 8793e0
Not reportedComparatorDirection
Verbatim
e0“Neither glyphosate nor glyphosate MON 8793 provided good control of purple nutsedge, velvetleaf, garden spurge, threelobe false mallow, jimsonweed, giant milkweed, Indian jujube, or tropical spiderwort”
Claim · model-written summary
Glyphosate and glyphosate MON 8793 controlled crowfootgrass and green foxtail.
- Taxon
- crowfootgrass, green foxtaile0
- Treatment
- glyphosatee0
- Outcome
- controllede0
- Qualifier
- glyphosate MON 8793e0
Not reportedComparatorDirection
Verbatim
e0“Neither glyphosate nor glyphosate MON 8793 provided good control of purple nutsedge, velvetleaf, garden spurge, threelobe false mallow, jimsonweed, giant milkweed, Indian jujube, or tropical spiderwort, but crowfootgrass, green foxtail, sprawling signalgrass, and spiny amaranth were controlled”
Claim · model-written summary
Glyphosate and glyphosate MON 8793 controlled sprawling signalgrass and spiny amaranth.
- Taxon
- sprawling signalgrass, and spiny amaranthe0
- Treatment
- glyphosatee0
- Outcome
- controllede0
- Qualifier
- glyphosate MON 8793e0
Not reportedComparatorDirection
Verbatim
e0“Neither glyphosate nor glyphosate MON 8793 provided good control of purple nutsedge, velvetleaf, garden spurge, threelobe false mallow, jimsonweed, giant milkweed, Indian jujube, or tropical spiderwort, but crowfootgrass, green foxtail, sprawling signalgrass, and spiny amaranth were controlled”
Claim · model-written summary
Glyphosate at 5.4 kg/ha and glyphosate MON 8793 at 3.6 kg/ha gave more than 80% control of bermudagrass at 8 WAT.
- Taxon
- bermudagrass
Cynodon dactylone0 - Treatment
- Glyphosate at 5.4 kg/ha and glyphosate MON 8793 at 3.6 kg/hae0
- Outcome
- control of bermudagrasse0
- Direction
- more thane0
- Value
- 80%e0
- Qualifier
- at 8 WATe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate at 5.4 kg/ha and glyphosate MON 8793 at 3.6 kg/ha provided more than 80% control of bermudagrass at 8 WAT, which was significantly better than the 2.7 kg/ha rate”
Claim · model-written summary
The 5.4 kg/ha glyphosate and 3.6 kg/ha MON 8793 rates controlled bermudagrass significantly better than the 2.7 kg/ha rate at 8 WAT.
- Taxon
- bermudagrassCynodon dactylone0
- Treatment
- Glyphosate at 5.4 kg/ha and glyphosate MON 8793 at 3.6 kg/hae0
- Outcome
- control of bermudagrasse0
- Direction
- bettere0
- Qualifier
- at 8 WATe0
- Comparator
- the 2.7 kg/ha ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Glyphosate at 5.4 kg/ha and glyphosate MON 8793 at 3.6 kg/ha provided more than 80% control of bermudagrass at 8 WAT, which was significantly better than the 2.7 kg/ha rate”
Claim · model-written summary
Flat-fan nozzles gave better efficacy of applied herbicides than flood-fan nozzles at 4 WAT on ragweed parthenium.
Verbatim
e0“Flat-fan nozzles provided better efficacy of applied herbicides than flood-fan nozzles at 4 WAT on ragweed parthenium”
The same questions in other papers
glyphosate · control · Cynodon dactylon (Bermuda grass)Positive and negative results
10 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
9 papers more in this group
See all 13 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.