Efeito da competição de plantas daninhas na cultura do feijoeiro

Manabe, Paula Masami Sano; Matos, Christiano da Conceição de; Ferreira, Evander Alves; Silva, Alexandre Ferreira da; Silva, Antônio Alberto da; Rocha, Paulo Roberto Ribeiro; Silva, Cícero Teixeira da

doi:10.14393/bj-v31n2a2015-22271

Cited by 17 publications

(20 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A study by Ribas et al (2013) concluded that when facing competition from weeds, the corn yield was reduced by 17%. Similar results have been reported for beans and soybeans by Manabe et al (2015) and Tavares et al (2012), respectively. In an attempt to avoid losses resulting from the presence of weeds in cultivated areas, efficient management measures should be adopted.…”

Section: Introductionsupporting

confidence: 90%

Development and testing of image processing algorithm to estimate weed infestation level in corn fields

Santiago¹,

Leite²,

Teruel³

et al. 2016

Aust J Crop Sci

View full text Add to dashboard Cite

The challenges of modern agriculture have led to the development of localized management tools which allow the rationalization of the use and application of pesticides, a reduction in production costs and the optimization of agricultural processes. This study was carried out to develop an algorithm capable of orienting weed control in the management of a corn crop, using digital image analysis to identify the level of weed infestation in the field. The seeds of six species of weed were sown in an experimental plot of corn, and daily images were captured for 40 days for the evaluation of the level of weed infestation (low, intermediate or high). The algorithm developed was able to target information about the plants and soil accurately and discriminate the residual information as referring to either the culture or weeds. The proposed algorithm has achieved 90% accuracy in identifying the level of infestation from images already evaluated by experts. The results can thus be used as part of weed control strategy, with the incorporation of the geographic coordinates of the image making possible the construction of a map of the level of weed infestation in the different areas where the crop is growing.

show abstract

Section: Introductionsupporting

confidence: 90%

Development and testing of image processing algorithm to estimate weed infestation level in corn fields

Santiago¹,

Leite²,

Teruel³

et al. 2016

Aust J Crop Sci

View full text Add to dashboard Cite

show abstract

“…Manabe et al (2015) observed different effects on the bean stem diameter, which were initially negatively affected by interference with Brachiaria plantaginea weeds, but differences were not observed between the treatments 60 d after emergence.…”

Section: Resultsmentioning

confidence: 73%

La competencia de la maleza (Commelina diffusa L.) puede afectar las características agronómicas y el contenido mineral de los granos de frijol

Oliveira

Dalvi

Altoé

et al. 2017

Ciencia e investigación agraria

View full text Add to dashboard Cite

“…It is likely that the impact of volunteer corn on crops as bean or soybean are related to direct competition for light due to its higher height, which to grow above the crop canopy, causing a shading (Caratti et al, 2016). Since the bean is a crop with lower competitive capacity with weeds, because it presents slow initial growth and because it is enclosed in the group of crops that less shade the soil (Manabe et al, 2015).…”

Section: Resultsmentioning

confidence: 99%

Bean yield loss in response to volunteer corn

Silva

Aguiar

Basso

et al. 2019

Agraria

View full text Add to dashboard Cite

Volunteer corn can become a weed where beans are grown in succession to corn and there is little information on yield losses and economic threshold for volunteer corn on bean. The objective was to evaluate the effect of volunteer corn density and emergence timing on bean yield and economic threshold. The volunteer corn was planting at 0, 0.5, 1, 2, 4, 8 and 12 plants m -2 in two relatives emergence timing on bean crop (at bean emergence and seven days after bean emergence). The competitive effects on bean yield was high when volunteer corn emerge at bean emergence than late emergence. When volunteer corn emerges at early timing, the yield bean was reduced between 19.6 and 35.5% at one volunteer corn m -2 , while for late emergence of volunteer corn, the yield losses ranged from 11.1 and 19.7%. The bean yield had highest impact on economic threshold, indicating low corn densities to justify the control. The increase of grain yield, bean price, herbicide efficiency and reduction in control costs decreased the economic threshold of volunteer corn on bean. The volunteer corn shows high interference potential on bean. The early timing emergence and increase of density of volunteer corn growing with bean causes highest yield losses. Perda de rendimento de feijão em resposta ao milho voluntário RESUMO: O milho voluntário se tornou uma planta daninha no feijão em sucessão ao milho e há poucas informações sobre a perda de rendimento e os níveis de danos econômicos desta planta sobre o feijão. O objetivo foi avaliar os efeitos da densidade e época de emergência do milho voluntário sobre o rendimento e nível de dano econômico no feijão. O milho voluntário foi semeado em 0, 0.5, 1, 2, 4, 8 e 12 plantas m -2 em duas épocas de emergência relativas ao feijão (na emergência do feijão e sete dias após emergência do feijão). A emergência precoce do milho voluntário causa maiores efeitos negativos sobre o feijão comparado com emergência tardia. A emergência precoce de uma planta de milho voluntário reduz entre 19,6 a 35,5% do rendimento do feijão, enquanto que a emergência tardia reduz entre 11,1 a 19,7%. A produtividade do feijão teve alto impacto sobre o nível de dano econômico, indicando que o controle se justifica em baixas densidades. Incrementos em rendimento de grãos, preço do feijão, eficiência do herbicida e redução nos custos de controle, diminuíram os níveis de dano do milho voluntário sobre o feijão. O milho voluntário apresenta alto potencial de interferência sobre o feijão. A emergência precoce do milho voluntário e o aumento da densidade causam altas perdas no rendimento da cultura. Palavras-chave: nível de dano; época de emergência; interferência; Phaseolus vulgaris; Zea maysBean yield loss in response to volunteer corn Rev. Bras.

show abstract

Efeito da competição de plantas daninhas na cultura do feijoeiro

Cited by 17 publications

References 12 publications

Development and testing of image processing algorithm to estimate weed infestation level in corn fields

Development and testing of image processing algorithm to estimate weed infestation level in corn fields

La competencia de la maleza (Commelina diffusa L.) puede afectar las características agronómicas y el contenido mineral de los granos de frijol

Bean yield loss in response to volunteer corn

Contact Info

Product

Resources

About