Abstract
ABSTRACT - Grain sorghum (Sorghum bicolor) is one cereal crop that faces huge problems with weed interference mostly because the lack of selective herbicides. This study aimed to assess the efficacy and safety of herbicide alternatives for weed control in grain sorghum as well as the selectivity of atrazine + s-metolachlor to different hybrids. Three field trials were designed as a randomized complete block with four replications. All experiments were conducted in Jardinópolis-SP and Mogi Mirim-SP during the 2015/16 growing season. Two trials included acetochlor, flumioxazin, fluroxypyr, mesotrione and s-metolachlor, applied in pre or post-emergence, in association or not with atrazine. A third trial was carried out with rates of the premix containing atrazine + s-metolachlor applied to the following hybrids: 1G100, 1G220, 1G230, 1G244, 1G282, 50A10, 50A40, 50A50 and 50A70. The pre‑emergence herbicides that exhibited satisfactory efficacy of weed control and selectivity to sorghum crop were flumioxazin, atrazine + mesotrione and atrazine + s-metolachlor. For post‑emergence, atrazine, atrazine + acetochlor, atrazine + s-metolachlor and atrazine + fluroxypyr were the best treatments for both efficacy and selectivity. The application of atrazine + s-metolachlor at the evaluated rates was considered selective to the nine hybrids assessed.Keywords: acetochlor, fluroxypyr, mesotrione, herbicide tolerance, weed control. MANEJO QUÍMICO DE PLANTAS DANINHAS EM SORGO GRANÍFERO E SELETIVIDADE DE ATRAZINE + S-METOLACHLOR PARA DIFERENTES HÍBRIDOS RESUMO – O sorgo granífero (Sorghum bicolor) é um dos cereais de verão que mais enfrenta problemas com plantas daninhas em razão da interferência destas espécies e carência de herbicidas para controlá-las. O objetivo deste estudo foi avaliar a eficácia e segurança de herbicidas alternativos no controle de plantas daninhas em sorgo granífero, assim como a seletividade de atrazine + s-metolachlor para diferentes híbridos. Três experimentos foram realizados em campo com delineamento de blocos ao acaso e quatro repetições, sendo conduzidos em Jardinópolis-SP e/ou Mogi Mirim-SP, ao longo da safra 2015/16. Em dois experimentos, acetochlor, flumioxazin, fluroxypyr, mesotrione e s-metolachlor foram avaliados em pré e/ou pós-emergência da cultura, em associação ou não (isolados) com atrazine. O terceiro experimento foi realizado com doses crescentes de atrazine + s-metolachlor e os híbridos de sorgo granífero 1G100, 1G220, 1G230, 1G244, 1G282, 50A10, 50A40, 50A50 e 50A70. Os tratamentos com controle satisfatório de plantas daninhas e seletividade à cultura, em pré-emergência, foram flumioxazin, atrazine + mesotrione e atrazine + s-metolachlor. Em pós-emergência, eles foram atrazine, atrazine + acetochlor, atrazine + s-metolachlor e atrazine + fluroxipyr. A aplicação de atrazine + s-metolachlor nas doses testadas foi seletiva para os nove híbridos avaliados.Palavras-chave: acetochlor, fluroxypyr, mesotrione, tolerância a herbicidas, controle de plantas daninhas. metolachlor at the evaluated rates was selective to the nine hybrids assessed.
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Claims 8
Claim · model-written summary
flumioxazin gave satisfactory pre-emergence weed control and sorghum selectivity.
- Treatment
- flumioxazine0
- Interactor
- weede0weed
- Outcome
- satisfactory efficacy of weed control and selectivity to sorghum crope0
SorghumNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pre‑emergence herbicides that exhibited satisfactory efficacy of weed control and selectivity to sorghum crop were flumioxazin, atrazine + mesotrione and atrazine + s-metolachlor.”
Claim · model-written summary
atrazine + mesotrione gave satisfactory pre-emergence weed control and sorghum selectivity.
- Treatment
- atrazine + mesotrionee0
- Interactor
- weede0weed
- Outcome
- satisfactory efficacy of weed control and selectivity to sorghum crope0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pre‑emergence herbicides that exhibited satisfactory efficacy of weed control and selectivity to sorghum crop were flumioxazin, atrazine + mesotrione and atrazine + s-metolachlor.”
Claim · model-written summary
atrazine + s-metolachlor gave satisfactory pre-emergence weed control and sorghum selectivity.
- Treatment
- atrazine + s-metolachlore0
- Interactor
- weede0weed
- Outcome
- satisfactory efficacy of weed control and selectivity to sorghum crope0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pre‑emergence herbicides that exhibited satisfactory efficacy of weed control and selectivity to sorghum crop were flumioxazin, atrazine + mesotrione and atrazine + s-metolachlor.”
Claim · model-written summary
atrazine ranked among the best post-emergence treatments for efficacy and selectivity.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For post‑emergence, atrazine, atrazine + acetochlor, atrazine + s-metolachlor and atrazine + fluroxypyr were the best treatments for both efficacy and selectivity.”
t0“GRAIN SORGHUM”
Claim · model-written summary
atrazine + acetochlor ranked among the best post-emergence treatments for efficacy and selectivity.
- Treatment
- atrazine + acetochlore0
- Outcome
- best treatments for both efficacy and selectivitye0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For post‑emergence, atrazine, atrazine + acetochlor, atrazine + s-metolachlor and atrazine + fluroxypyr were the best treatments for both efficacy and selectivity.”
t0“GRAIN SORGHUM”
Claim · model-written summary
atrazine + s-metolachlor ranked among the best post-emergence treatments for efficacy and selectivity.
- Treatment
- atrazine + s-metolachlore0
- Outcome
- best treatments for both efficacy and selectivitye0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For post‑emergence, atrazine, atrazine + acetochlor, atrazine + s-metolachlor and atrazine + fluroxypyr were the best treatments for both efficacy and selectivity.”
t0“GRAIN SORGHUM”
Claim · model-written summary
atrazine + fluroxypyr ranked among the best post-emergence treatments for efficacy and selectivity.
- Treatment
- atrazine + fluroxypyre0
- Outcome
- best treatments for both efficacy and selectivitye0
- Direction
- beste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For post‑emergence, atrazine, atrazine + acetochlor, atrazine + s-metolachlor and atrazine + fluroxypyr were the best treatments for both efficacy and selectivity.”
t0“GRAIN SORGHUM”
Claim · model-written summary
Atrazine plus s-metolachlor was selective at evaluated rates to nine hybrids.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of atrazine + s-metolachlor at the evaluated rates was considered selective to the nine hybrids assessed.”
t0“GRAIN SORGHUM”
The same questions in other papers
atrazine · crop injury · SorghumPositive and negative results
1 paper in the same direction as this paper · 9 in the opposite direction
- no effect
- negative
- negative
7 papers more in this group
See all 11 papers →mesotrione · crop injury · SorghumResults agree
1 paper in the same direction as this paper
- positive
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.