Abstract
Field studies were conducted from 1991 through 1994 in several locations of Southern Spain to determine the efficacy of imazapyr as late postemergence application in sunflower for broomrape control and the crop response to this herbicide under weed-free conditions. Single applications of imazapyr at 10 to 15 g/ha on sunflower plants at about the V12 (12 leaves) to V19 (19 leaves) growth stages, infected with broomrape plants at the predominant growth stages “ c ” (small nodule with shoot bud visible) and “ d ” (shoot bud and roots well developed), resulted in effective control without damaging the crop. Double applications of imazapyr at 10 + 10 g/ha at about the same crop growth stages V12 to V19, at a time interval of 12 to 14 d between single applications, were also efficacious and well tolerated by the crop. The same herbicide treatments applied to weed-free sunflower did not adversely affect the biomass, head diameter or yield of the crop as compared with the nontreated check. As a result of the low rate of imazapyr required for broomrape control, the herbicide treatments are economical (about $3 to $6/ha), non-residual and not affected by the type of soil texture and rainfall conditions.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 5
Claim · model-written summary
Single imazapyr applications controlled broomrape without crop damage.
- Taxon
- sunflower
Helianthus annuuse0 - Treatment
- imazapyr at 10 to 15 g/hae0
- Interactor
- broomrapee0parasite
- Outcome
- effective controle0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Single applications of imazapyr at 10 to 15 g/ha on sunflower plants at about the V12 (12 leaves) to V19 (19 leaves) growth stages, infected with broomrape plants at the predominant growth stages “ c ” (small nodule with shoot bud visible) and “ d ” (shoot bud and roots well developed), resulted in effective control without damaging the crop”
Claim · model-written summary
Double imazapyr applications controlled broomrape and were tolerated.
- Taxon
- sunflowerHelianthus annuust0
- Treatment
- imazapyr at 10 + 10 g/hae0
- Outcome
- efficacious and well tolerated by the crope0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Double applications of imazapyr at 10 + 10 g/ha at about the same crop growth stages V12 to V19, at a time interval of 12 to 14 d between single applications, were also efficacious and well tolerated by the crop”
t0“Sunflower”
Claim · model-written summary
Imazapyr did not adversely affect sunflower biomass, head diameter or yield under weed-free conditions.
- Taxon
- sunflowerHelianthus annuuse0
- Treatment
- herbicide treatmentse0
- Outcome
- biomass, head diameter or yielde0
- Direction
- did not adversely affecte0
- Comparator
- nontreated checke0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The same herbicide treatments applied to weed-free sunflower did not adversely affect the biomass, head diameter or yield of the crop as compared with the nontreated check”
Claim · model-written summary
Imazapyr broomrape-control treatments cost about $3 to $6 per hectare.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- economicale0
- Value
- about $3 to $6/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“herbicide treatments are economical (about $3 to $6/ha)”
t0“Sunflower”
Claim · model-written summary
Imazapyr broomrape-control treatments were non-residual and unaffected by soil texture or rainfall.
- Taxon
- sunflowerHelianthus annuust0
- Outcome
- non-residual and not affected by the type of soil texture and rainfall conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“non-residual and not affected by the type of soil texture and rainfall conditions”
t0“Sunflower”
The same questions in other papers
herbicide · yield · Helianthus annuus (common sunflower)Positive and negative results
12 papers in the same direction as this paper · 56 in the opposite direction
- positive
- positive
- positive
65 papers more in this group
See all 69 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.