Abstract
Abstract In areas with a relatively long growing season, a doublecropping system of soybeans ( Glycine max (L.) Merr.) planted after corn ( Zea mays L.) harvested for silage or grain is gaining acceptance. One problem which has arisen involves the potential injury to the soybean crop from atrazine [2‐chloro‐4‐(ethylamino)‐6‐(isopropylamino)‐ s ‐triazine] residue remaining in the soil after the corn is harevsted. Field studies were conducted during 1977 on an Arrendondo fine sand (Grossarenic Paleudult) at Gainesville, Florida and during 1978 and 1979 on a Tifton fine sandy loam (Plinthic Paleudult) at Jay, Florida to determine the persistence of atrazine in such a doublecropping system. Soybeans were no‐till planted at various intervals (4 to 19 weeks) after atrazine (0 to 4.48 kg/ha) was applied preemergence to corn. Soybean yields were not significantly affected by 1.12 or 2.24 kg/ha atrazine when the interval between corn herbicide application and soybean planting was 8 weeks. An Interval of 10 weeks was required before 4.48 kg/ha atrazine had no significant affect on soybean yield. The yield loss observed with shorter planting intervals appeared to be the result of a reduction in soybean stand. These results indicate that under conditions of warm temperatures, relatively high rainfall amounts, and sandy soils soybeans can be safely planted after corn harvested for silage or grain (approximately 14 and 20 weeks, respectively, after atrazine application) when rates of atrazine normally recommended for annual weed control in corn (1.12 to 4.48 kg/ha) are used.
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 6
Claim · model-written summary
At an eight-week interval, 1.12 kg/ha atrazine did not significantly affect soybean yield.
- Taxon
- Soybean
Glycine maxe0 - Treatment
- 1.12e0
- Outcome
- yieldse0
- Direction
- not significantly affectede0
- Qualifier
- 8 weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields were not significantly affected by 1.12 or 2.24 kg/ha atrazine when the interval between corn herbicide application and soybean planting was 8 weeks.”
Claim · model-written summary
At an eight-week interval, 2.24 kg/ha atrazine did not significantly affect soybean yield.
- Taxon
- SoybeanGlycine maxe0
- Treatment
- 2.24 kg/ha atrazinee0
- Outcome
- yieldse0
- Direction
- not significantly affectede0
- Qualifier
- 8 weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soybean yields were not significantly affected by 1.12 or 2.24 kg/ha atrazine when the interval between corn herbicide application and soybean planting was 8 weeks.”
Claim · model-written summary
A ten-week interval was required before 4.48 kg/ha atrazine had no significant effect on soybean yield.
- Taxon
- soybeanGlycine maxe0
- Treatment
- 4.48 kg/ha atrazinee0
- Outcome
- soybean yielde0
- Direction
- no significant affecte0
- Value
- 10 weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An Interval of 10 weeks was required before 4.48 kg/ha atrazine had no significant affect on soybean yield.”
Claim · model-written summary
Yield loss at shorter intervals appeared to result from reduced soybean stand.
- Taxon
- soybeanGlycine maxe0
- Outcome
- yield losse0
- Qualifier
- reduction in soybean stande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield loss observed with shorter planting intervals appeared to be the result of a reduction in soybean stand.”
Claim · model-written summary
Under warm, wet sandy-soil conditions, soybeans can safely follow corn silage after about 14 weeks at recommended atrazine rates.
- Taxon
- soybeansGlycine maxe0
- Outcome
- safely planted after corn harvested for silagee0
- Value
- approximately 14 and 20 weekse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybeans can be safely planted after corn harvested for silage or grain (approximately 14 and 20 weeks, respectively, after atrazine application) when rates of atrazine normally recommended for annual weed control in corn (1.12 to 4.48 kg/ha) are used.”
Claim · model-written summary
Under warm, wet sandy-soil conditions, soybeans can safely follow corn grain after about 20 weeks at recommended atrazine rates.
- Taxon
- soybeansGlycine maxe0
- Outcome
- safely planted after corn harvested for silage or graine0
- Value
- approximately 14 and 20 weekse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soybeans can be safely planted after corn harvested for silage or grain (approximately 14 and 20 weeks, respectively, after atrazine application) when rates of atrazine normally recommended for annual weed control in corn (1.12 to 4.48 kg/ha) are used.”
The same questions in other papers
atrazine · yield · Glycine max (soybean)Results differ
6 papers in the same direction as this paper · 1 in the opposite direction
- negative
- negative
- positive
4 papers more in this group
See all 8 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.