Abstract
No-tillage production of crops has developed and become widespread since the late 1950/s. No-till is dependent upon the use of broad spectrum herbicides to kill weeds already growing at planting time. Until recently, this has almost exclusively been paraquat (1,1'-dimethy1-4,4'-bipyridinium ion). Glyphosate [N-(phosphonomethyl)glycine] is a new herbicide which has great potential for use in no -tillage production. Soybeans (Glycine max L.) were planted in the stubble after wheat (Triticum aestivum L.) was harvested. All plots received applications of the residual herbicides alachlor [2-chioro-2',6'-diethyl-N-(methoxymethyl)acetanilide] and linuron [3-(3,4-dichlorophenv1)-1-methoxy-1-methylurea]. Each plot also received either paraquat or glyphosate or was designated as a check. Glyphosate was appiied at three different volumes and paraquat at only one volume. All mixtures were applied at two spraying pressures. Applications were made to areas where straw was undisturbed after combining and to areas where the straw had been removed. Ratings taken 10 days and six weeks after herbicide application indicate that glyphosate performs as well as or better than paraquat. The ratings also indicate that glyphosate performs as well at 187 L/ha as it does at 574 L/ha. Spraying pressure and removal of straw seem to have little effect on the degree of weed control.
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Claims 4
Claim · model-written summary
Glyphosate performed as well as or better than paraquat in weed control ratings.
- Taxon
- Soybeans
Glycine maxe1 - Treatment
- glyphosatee0
- Outcome
- Ratingse0
- Direction
- as well as or better thane0
- Qualifier
- 10 days and six weekse0
- Comparator
- paraquate0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ratings taken 10 days and six weeks after herbicide application indicate that glyphosate performs as well as or better than paraquat.”
e1“Soybeans (Glycine max L.)”
Claim · model-written summary
Glyphosate performed as well at 187 L/ha as at 574 L/ha.
- Taxon
- SoybeansGlycine maxe1
- Treatment
- glyphosatee0
- Outcome
- performse0
- Direction
- as welle0
- Value
- 187 L/hae0
- Comparator
- 574 L/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“glyphosate performs as well at 187 L/ha as it does at 574 L/ha”
e1“Soybeans (Glycine max L.)”
Claim · model-written summary
Spraying pressure had little effect on weed control.
- Taxon
- SoybeansGlycine maxe1
- Treatment
- Spraying pressuree0
- Outcome
- degree of weed controle0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying pressure and removal of straw seem to have little effect on the degree of weed control.”
e1“Soybeans (Glycine max L.)”
Claim · model-written summary
Straw removal had little effect on weed control.
- Taxon
- SoybeansGlycine maxe1
- Treatment
- removal of strawe0
- Outcome
- degree of weed controle0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying pressure and removal of straw seem to have little effect on the degree of weed control.”
e1“Soybeans (Glycine max L.)”
The same questions in other papers
application · weed · Glycine max (soybean)Positive and negative results
1 paper in the same direction as this paper · 12 in the opposite direction
- positive
- positive
- positive
10 papers more in this group
See all 14 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.