Selectivity of Iodosulfuron-Methyl to Oat Cultivars

Queiroz, Andrew Rerison Silva de; Vidal, Ribas Antônio; Nava, Itamar Cristiano; Pacheco, Marcelo Teixeira; Federizzi, Luiz Carlos; Xavier, Elouize

doi:10.1590/s0100-83582017350100022

Cited by 7 publications

(12 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A habilidade da planta em degradar herbicidas depende das condições ambientais preponderantes, que devem ser próximas às condições ótimas para o desenvolvimento da cultura (Queiroz et al, 2017), pois a seletividade desses produtos devido ao metabolismo diferencial requer aporte de energia celular (Carvalho et al, 2009), proveniente da fotossíntese. Assim, justifica o acréscimo dessa variável com a aplicação dos herbicidas.…”

Section: Resultsunclassified

Efeito da redução de luz na seletividade a herbicidas e rendimento de grãos do trigo

et al. 2017

View full text Add to dashboard Cite

A redução da radiação solar incidente na superfície terrestre pode alterar o comportamento vegetal e a seletividade de herbicidas. O objetivo deste trabalho foi avaliar a seletividade dos herbicidas bentazona, iodosulfuron-methyl-sodium e o rendimento de grãos do trigo, em condições de redução de luminosidade em diferentes estádios fenológicos da cultura. Foram conduzidos dois experimentos, o primeiro (I) em condições controladas e o segundo (II) a campo. Nos dois experimentos foram avaliadas variáveis no trigo em função da aplicação de herbicidas (bentazona, 900 g ha-1 i.a.; iodosulfuron-methyl-sodium, 5 g ha-1 i.a.; e testemunha, sem aplicação de herbicida) e da variação da taxa luminosa (testemunha; redução de luz durante todo o ciclo; redução no estádio inicial, da emergência até três folhas; redução no estádio vegetativo, entre três folhas até a emergência completa da inflorescência; e redução na fase reprodutiva, da inflorescência até a colheita). Os resultados demonstram que a redução de luz altera características morfofisiológicas do trigo, aumenta a estatura de plantas, reduz a taxa de transpiração e condutância estomática, mas não interfere na fotossíntese do cereal. No entanto, o rendimento de grãos é afetado negativamente pela redução de luz durante o estádio vegetativo, período ontogenético que coincide com a formação dos principais componentes de rendimento da cultura. Os herbicidas avaliados são seletivos ao trigo, com ou sem redução de luminosidade.

show abstract

Section: Resultsunclassified

Efeito da redução de luz na seletividade a herbicidas e rendimento de grãos do trigo

et al. 2017

View full text Add to dashboard Cite

show abstract

“…Herbicide application causes crop toxicity and requires enzymatic metabolism for inactivation or hydroxylation of the herbicide molecules into non-toxic products before it reaches the site of action in the cell and causes damage to the plant. This herbicide inactivation is energetically costly, can compromise crop development and, consequently, reduce final productivity (Dias et al, 2017;Queiroz, et al, 2017;Rubenich et al, 2017).…”

Section: Phytotoxicitymentioning

confidence: 99%

Interference of post-emergent herbicides with wheat (Triticum aestivum L.) productivity parameters/ Interferência de herbicidas pós-emergentes sobre parâmetros produtivos do trigo (Triticum aestivum L.)

Rüdell¹,

Giacomini²,

Frandaloso³

et al. 2021

BJDV

View full text Add to dashboard Cite

Wheat is the most important income-generating crop in southern Brazil during the cold season. It also contributes to the crop rotation system and increases the yield of successive crops. During its growth cycle, herbicides are used to control weeds, which are the main factor limiting wheat productivity. Further, high costs of weed control directly affect crop economic returns. The objective of this study was to evaluate the effect of the application of two herbicides, namely, 2,4-D and iodosulfuron-methyl, on the productivity of two wheat cultivars during the nine different stages of crop development. The most suitable crop stage for herbicide application, as described in the corresponding label on the package, is at the beginning of tillering. 2,4-D had a significant impact on productivity parameters, reducing the number of tillers, the number of ears, and the number of tillers without grains, while increasing the number of tillers without ears and ears without grains, indicating greater phytotoxicity and, ultimately, reducing crop productivity. Conversely, iodosulfuron-methyl showed greater selectivity to the wheat cultivars tested and caused a much lesser impact on the productivity parameters measured.

show abstract

“…The protective action of the mefenpyr-diethyl safener for the herbicides fenoxaprop-P-ethyl and iodosulfuronmethyl has been reported, resulting in significant improvements in the safety of its application in crops, such as white oats, wheat, rye, triticale, and barley (Hacker et al, 2000;Queiroz et al, 2017). In addition, according to Bianchi et al (2020), the use of mefenpyr-diethyl can stimulate action in wheat and soybean plants.…”

Section: Introductionmentioning

confidence: 99%

Mefenpyr-diethyl as a safener for haloxyfop-methyl in bahiagrass

et al. 2021

View full text Add to dashboard Cite

Mefenpyr-diethyl is a foliar-acting safener of the pyrazoline chemical group, and after its absorption, the metabolization and detoxification of herbicides occur in treated plants. Studies have demonstrated the protective effect of this safener for the herbicide fenoxaprop-P-ethyl in grass. Thus, this work aimed to evaluate whether a tank mixture of mefenpyr-diethyl has a protective response to haloxyfop-methyl in non-perennial bahiagrass. The experiment had a completely randomized design and was carried out in a greenhouse, using five replications with a 10x2 factorial scheme and ten doses of haloxyfop-methyl (0.00, 0.24, 0.49, 0.97, 1.95, 3.90, 7.79, 15.59, 31.28, and 62.35 g a.i. ha-1) in the presence or absence of a tank mixture of mefenpyr-diethyl (50 g a.i. ha-1). Phytotoxicity and electron transport rate (ETR) were evaluated at 7, 14, 21, and 28 days after application (DAA), in addition to plant height and dry biomass at 28 DAA. In general, phytotoxicity increased due to the higher levels of the herbicide haloxyfop-methyl. The application of mefenpyr-diethyl, in turn, provided lower levels of phytotoxicity, as well as lower reductions in ETR, height, and dry biomass when compared to untreated plants. These results show the safener action of a tank mixture of mefenpyr-diethyl on low doses of haloxyfop-methyl in non-perennial bahiagrass.

show abstract

Selectivity of Iodosulfuron-Methyl to Oat Cultivars

Cited by 7 publications

References 16 publications

Efeito da redução de luz na seletividade a herbicidas e rendimento de grãos do trigo

Efeito da redução de luz na seletividade a herbicidas e rendimento de grãos do trigo

Interference of post-emergent herbicides with wheat (Triticum aestivum L.) productivity parameters/ Interferência de herbicidas pós-emergentes sobre parâmetros produtivos do trigo (Triticum aestivum L.)

Mefenpyr-diethyl as a safener for haloxyfop-methyl in bahiagrass

Contact Info

Product

Resources

About