Periods of weed interference in cowpea crop in the semi-arid of Minas Gerais, Brazil

Lacerda, M. L.; Aspiazú, Ignácio; Carvalho, Abner José de; Silva, Alexandre Ferreira da; Ferreira, Evander Alves; Souza, Andrey Antunes de; Campos, Marcos Lopes de; Puiatti, Mário

doi:10.5039/agraria.v15i2a6749

Cited by 6 publications

(10 citation statements)

References 17 publications

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“…Os dados foram submetidos a análise de variância pelo teste F a 5% de probabilidade e de regressão linear com a significância dos fatores, pelo modelo Levantamentos fitossociológicos e estudos de interferência de plantas daninhas em áreas de cultivo de feijão-caupi, realizados nos municípios de Vitória da Conquista-BA e Janaúba-MG; relatam que as famílias Malvaceae, Amaranthaceae, Asteraceae e Poaceae, ocorreram com maior frequência (Lima et al, 2016;Lacerda et al, 2020). crescimento e desenvolvimento do feijão-caupi (Osipitan et al, 2017).…”

Section: Methodsunclassified

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Rendimento de feijão-caupi sob interferência de plantas daninhas / Cowpea yield under weed interference

Júnior¹,

Barbosa²,

Costa³

et al. 2021

BJDV

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Section: Methodsunclassified

“…A perda de produtividade foi superior ao encontrado em outras pesquisas, com os valores de: 68% (Adigun et al, 2014); 64% (Yadav et al, 2018); 66% (Gonzaga et al, 2018); 39% (Castro et al, 2019) e 73% (Lacerda et al, 2020).…”

Section: Methodsunclassified

Rendimento de feijão-caupi sob interferência de plantas daninhas / Cowpea yield under weed interference

Júnior¹,

Barbosa²,

Costa³

et al. 2021

BJDV

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“…According to the Brazilian National Food Supply Company, it is estimated that in the 2020/2021 harvest the country had a production of 623,800 Mg of cowpea, grown in an area of approximate 1,349,600 ha -1 , with a mean yield lower than 500 kg ha -1 (CONAB, 2022). This low mean yield can be explained by, among other factors, the presence of weeds, which compete with the crop for water, light, and nutrients, are hosts of pests and diseases, and produce allelopathic substances that compromise the expected productions (LACERDA et al, 2020). These dynamics include direct and indirect factors that characterize the weed interference (SHIRGAPURE; GHOSH, 2020).…”

Section: Introductionmentioning

confidence: 99%

Weed interference periods in cowpea crop

et al. 2023

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Cowpea is one of the pulse crops that present the highest potential for growing in the Semiarid region of Brazil. Lowcost vegetable protein source, it has resilience to adverse conditions, however, in competition with weeds, its productivity can be strongly compromised. To overcoming this situation, it is essential for integrated management programs to determine the critical period for preventing interference. Thus, the objective of this work was to determine weed interference periods and the effect of coexistence periods on cowpea grain yield in the Semiarid region of the state of Minas Gerais, Brazil. The treatments were arranged in a 2×9 factorial scheme, as follows: cultivation in coexistence with weeds and cultivation under weed control, for nine crescent periods (0-7, 0-14, 0-21, 0-28, 0-35, 0-42, 0-49, 0-56 and 0-63 days after crop emergence), in a randomized experimental block design with four replications. The weed community was studied through phytosociological survey and evaluation of dry matter production and cowpea was evaluated for dry matter production, 100-grain mass and grain yield. The interference periods were determined using a non-linear logistic regression model. The weed community found was composed of 70% dicotyledonous and 30% monocotyledon plants, distributed in seven families and ten species. The coexistence with weeds results in losses of up to 90% in cowpea grain yield. The critical period of weed control in cowpea crop in the Semiarid region of the state of Minas Gerais, Brazil, is 11 to 36 days after crop emergence.

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“…In this way, by applying N fertilizers to increase the productive performance of the common bean crop, one may also increase the competitiveness of weeds in relation to the crop and, consequently, compromise weed control measures. Theoretically, this problem could be solved by replacing N fertilization with inoculation with diazotrophic bacteria (Hungria & Kaschuk, 2014), which could provide the common bean with greater tolerance to coexistence with the weed community and allow a longer period before weed interference (PBI) (Schiessel et al, 2019;Lacerda et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Weed coexistence in carioca bean inoculated

Franciscon

Costa

Franciscon

et al. 2022

Semina: Ciênc. Agrár.

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The supply of nitrogen (N) to the carioca bean plant via inoculation with Rhizobium tropici can prevent competition with the weed community by allowing the crop to absorb the nutrient available in the soil. On this basis, this study proposes to examine the period before weed interference (PBI) in the carioca bean plant following inoculation with R. tropici or N topdressing. The experiments were carried out under field conditions during the summer seasons of 2014 and 2015. A randomized-block experimental design with four replicates was adopted, in a 2 × 11 factorial arrangement (common bean plant inoculated or topdressed with N × 11 periods of coexistence with weeds, namely, 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, or 90 days after emergence [DAE]). Nitrogen topdressing increased the crop's tolerance to coexist with weeds from 6 to 14 DAE, compared with inoculation with R. tropici The PBI for the inoculated common bean plant was 24 and 16 DAE in the years 2014 and 2015, respectively. For the N-topdressed plant, the PBI was 30 DAE in both years.

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Periods of weed interference in cowpea crop in the semi-arid of Minas Gerais, Brazil

Cited by 6 publications

References 17 publications

Rendimento de feijão-caupi sob interferência de plantas daninhas / Cowpea yield under weed interference

Rendimento de feijão-caupi sob interferência de plantas daninhas / Cowpea yield under weed interference

Weed interference periods in cowpea crop

Weed coexistence in carioca bean inoculated

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