Eficácia e seletividade de herbicidas em cultivares de feijão-caupi

Mesquita, Hélida Campos de; Freitas, Francisco Cláudio Lopes de; Filho, F. R. Freire; Silva, Márcio Gledson Oliveira da; Cunha, Jorge Luíz Xavier Lins; Rodrigues, Ana Paula Medeiros dos Santos

doi:10.7824/rbh.v16i1.505

Cited by 4 publications

(7 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The phytointoxication form seen in BRS Rouxinol plants was a very slight yellowing of the cotyledon leaf and the first trefoil. Silva et al (2014), Mesquita et al (2017) and Costa et al (2017) reported similar phytotoxicity events with application of S-metolachlor in cultivars Guariba, BRS Xiquexique and IPA 207, respectively. S-metolachlor is a selective herbicide for use with common bean (Phaseolus vulgaris) (PROCÓPIO et al, 2001) and soybean (Glycine max) crops (STEWART et al, 2010), and acts on both dicotyledonous and poaceous weeds.…”

Section: Daa -Dias Após a Aplicaçãomentioning

confidence: 77%

“…O sintoma de fitointoxicação observado nas plantas da BRS Rouxinol foi um amarelecimento muito leve da folha cotiledonar e do primeiro trifólio. Silva et al (2014), Mesquita et al (2017) e Costa et al (2017) relataram níveis de fitointoxicação semelhantes com aplicação do S-metolachlor nas cultivares Guariba, BRS Xiquexique e IPA 207, respectivamente. O S-metolachlor é um herbicida seletivo para as culturas do feijão-comum (Phaseolus vulgaris) (PROCÓPIO et al, 2001) e da soja (Glycine max) (STEWART et al, 2010) e está presente em programas de controle de plantas daninhas dicotiledôneas e poáceas nessas culturas.…”

Section: Daa -Dias Após a Aplicaçãounclassified

“…Em razão de semelhanças anatômicas, fisiológicas e de cultivo do feijão-caupi com o feijão-comum e a soja, muitos herbicidas empregados nessas duas últimas culturas têm sido avaliados em trabalhos de pesquisa, e os resultados obtidos nos experimentos com diversas cultivares e em diferentes regiões brasileiras têm evidenciado a segurança (seletividade) e a eficácia de controle químico de plantas daninhas (FONTES et al, 2010;FONTES et al, 2013;LINHARES et al, 2014;SILVA et al, 2014;MANCUSO et al, 2016;MESQUITA et al, 2017;;…”

Section: Introductionunclassified

“…Due to anatomical, physiological and cultivar-type similarities of cowpea to common bean and soybean, many herbicides used for the latter two crops have been evaluated in researchs, should be applicable for cowpea cultivation. (FONTES et al, 2010;FONTES et al, 2013;LINHARES et al, 2014;SILVA et al, 2014;MANCUSO et al, 2016;MESQUITA et al, 2017;GONZAGA et al, 2018). As such, the results obtained in the experiments with different bean and soybean cultivars and in a several parts of Brazilian have have direct relevance to the effectiveness of chemical weed control.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Herbicide selectivity and weed control in cowpea

Fontes

Oliveira

Morais

2019

AGRO@MBIENTE ON-LINE

View full text Add to dashboard Cite

Weeds negatively affect cowpea plants, causing reduced growth, delayed development and yield loss. The aim of this study was to assay selectivity and effectiveness of weed control herbicides in cowpea cropping field conditions. For selectivity evaluation, the herbicide S-metolachlor, was used pre-emergence (PRE), and carfentrazone-ethyl, clethodim, fenoxaprop-p-ethyl, fluazifop-p-butyl and quizalofop-p-ethyl post-emergence (POST). In effectiveness evaluation, S-metolachlor (PRE), and carfentrazone-ethyl (POST), S-metolachlor in PRE and fluazifop-p-butyl (POST), clethodim, carfentrazone-ethyl and clethodim, fenoxapropp- ethyl, carfentrazone-ethyl and fenoxaprop-p-ethyl, fluazifop-p-butyl, carfentrazone-ethyl and fluazifop-pbutyl, quizalofop-p-ethyl and carfentrazone-ethyl and quizalofop-p-ethyl (POST). Two controls were included, one with weeding at 15 and 35 days after sowing (DAS) and the other without weed control. Carfentrazone-ethyl caused mild phytotoxicity in plants seven days after application, but did not reduce yield (2337 kg ha-1). The levels of weed control and productivity obtained with S-metolachlor alone or in association with carfentrazoneethyl or fluazifop-p-butyl, associated or not with carfentrazone-ethyl, were similar to those obtained with weeds. Spraying with carfentrazone-ethyl alone resulted in low control effectiveness and reduced yield (1511 kg ha-1). Weed interference during the crop cycle reduced yield by 77% (531 kg ha-1). The selectivity and effectiveness obtained with the herbicides should be considered as an agronomic and economically-viable.

show abstract

Section: Daa -Dias Após a Aplicaçãomentioning

confidence: 77%

Section: Daa -Dias Após a Aplicaçãounclassified

Section: Introductionunclassified

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Herbicide selectivity and weed control in cowpea

Fontes

Oliveira

Morais

2019

AGRO@MBIENTE ON-LINE

View full text Add to dashboard Cite

show abstract

“…Todavia, há falta de produtos químicos registrados junto ao Ministério da Agricultura Pecuária e Abastecimento, o que impede a recomendação e o uso de tais produtos no campo, bem como impede o conhecimento sobre sua ação sobre plantas não-alvo (SILVA; ALBERTINO, 2009). Estudos recentes conduzidos por Mancuso et al (2016) e Mesquita et al (2017) avaliaram a seletividade e eficiência de herbicidas no controle de plantas daninhas na cultura do feijão-caupi. No entanto, ainda se conhece pouco sobre a seletividade de herbicidas a cultura, sendo necessário o estudo do efeito de mais moléculas herbicidas sobre a planta, de maneira a buscar opções que proporcionem controle mais eficiente das plantas daninhas e menor efeito fitotóxico sobre a cultura (SILVA et al, 2016).…”

Section: Introductionunclassified

Tolerância Do Feijão-Caupi a Diferentes Herbicidas Aplicados Em Pós-Emergência

et al. 2018

View full text Add to dashboard Cite

One of the obstacles to the production of cowpea is the intensity of weed infestations that may interfere with its productivity. The objective of this work was to evaluate the tolerance of cowpea, cultivar BRS Guariba, to the herbicides Linuromand Quizalofope-P Etílico, in the initial stage of development of the crop. The experiment was conducted in sequestrationsystem, emergency irrigation underfield conditions in experimental design with randomized blocks, nine treatments and four replicates. The treatments evaluated were: 50% Quizalofope-P-Ethyl; 50% of Linurom; 100% Quizalofope-P-Ethyl; 100% of Linurom; 50% Quizalofope-P-Ethyl+ 50% Linurom; 50% Quizalofope-P-Ethyl+ 100% Linurom; 100% Quizalofope-P-Ethyl+ 50% Linurom; 100% of Quizalofope-P-Ethyl+ 100% of Linurom,and Manual weeding (control). Visual evaluations of weed control, phytotoxicity, plant height, number of leaves and stem diameter were performed. The cowpea plants, BRS Guariba cultivar, presented high tolerance tothe herbicides 50% and 50% in the post-emergence applications. The herbicide 100% Linurom and the formulation of the Quizalofope-P-Ethyl + Linurom cause severe damage to the development of cowpea. The herbicides blended with 100% of Quizalofope-P-Ethyland 100% of Linurom potentiatesthe effect of the herbicides on the cowpea crop, causing the death of the plants.

show abstract

Yield and profitability responses of cowpea to cropping systems and sowing seasons in Vitória da Conquista, Bahia State, Brazil

et al. 2022

View full text Add to dashboard Cite

Cowpea (Vigna unguiculata) crops produce a poor yield in northeastern Brazil compared to the other regions. The goal of this study was to assess the effects of irrigated cropping systems and sowing seasons on cowpea yield and profitability in Vitória da Conquista, Bahia, Brazil. Field studies were performed in four experiments during the rainy and dry seasons during 2016/2017 and 2017/2018, which denoted harvests 1, 2, 3, and 4, respectively. A randomized block design was used for each experiment with four replicates and the following treatments for cropping systems: (1) manual weeding; (2) liming and manual weeding; (3) liming and phosphorus (P) fertilization at sowing, nitrogen (N) and potassium (K) topdressing fertilization, and chemical weed control; (4) liming and P fertilization at sowing, K topdressing fertilization, rhizobia inoculation, and chemical weed control; (5) liming and P fertilization at sowing, N and K topdressing fertilization, rhizobia inoculation, and chemical weed control; and (6) seed pretreatment with cobalt (Co) and molybdenum (Mo), liming and P fertilization at sowing, N and K topdressing fertilization, rhizobia inoculation, and chemical weed control. The technology added to cropping systems increased the number of pods per plant, pod length, seeds per pod, and 100-seed weight, irrespective of the rainy or dry sowing season. Economic analysis, in turn, showed that the technology decreased the total operating cost despite increasing the cost of mechanical operations, inputs, and materials because of the replacement of manual weeding by chemical weed control. However, these costs were not influenced by the sowing seasons. We concluded that technologically enhanced cropping systems, especially systems 4 and 6, improved grain yield and provided greater profitability, which translated into improved economic benefits for farmers. Conversely, the sowing season influenced profitability, which was higher for dry season harvests, when there was less product offered and prices became higher.

show abstract

Eficácia e seletividade de herbicidas em cultivares de feijão-caupi

Cited by 4 publications

References 6 publications

Herbicide selectivity and weed control in cowpea

Herbicide selectivity and weed control in cowpea

Tolerância Do Feijão-Caupi a Diferentes Herbicidas Aplicados Em Pós-Emergência

Yield and profitability responses of cowpea to cropping systems and sowing seasons in Vitória da Conquista, Bahia State, Brazil

Contact Info

Product

Resources

About