Competição de plantas daninhas com a cultura do café em duas épocas de infestação

Fialho, Cíntia Maria Teixeira; Silva, G.R.; Freitas, M.A.M.; França, André Cabral; Melo, Christiane Augusta Diniz; Silva, A.A.

doi:10.1590/s0100-83582010000500005

Cited by 22 publications

(19 citation statements)

References 15 publications

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“…It was observed that, even if the management operations (fertilization, control of diseases, among others) are performed in the entire area, this will not result in uniformity of yield in the plantation. Yield variation is influenced by factors such as: biennuality (Camargo & Camargo, 2001); soil fertility and leaf nutrition (Wadt & Dias, 2012;Scalco et al, 2014); occurrence of pests, diseases and weeds (Fialho et al, 2011;Carvalho et al, 2012;Lopes et al, 2012), among others.…”

Section: Resultsmentioning

confidence: 99%

Geostatistical analysis of Arabic coffee yield in two crop seasons

Carvalho

Silva

Ferraz

et al. 2017

Rev. bras. eng. agríc. ambient.

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To make the coffee activity competitive, some farmers use precision coffee farming. Thus, it is possible to create thematic maps that guide management practices for regions where there are limitation for the plant development. The objective of this study was to identify the spatial dependence of coffee crop yield, in 2012 and 2013. The experimental area is located in a Haplustox in Três Pontas, Minas Gerais. One hundred sampling points were georeferenced for the collection of yield data through manual harvest. The difference of yield between crop seasons was also evaluated. Data were processed using geostatistical analysis. It was possible to identify and characterize the spatial dependence of all variables, as well as to create contour maps. There were differences between the 2012 and 2013 maps, due to the biennial coffee phenological cycle, which can be confirmed by the map of the difference between the crop seasons. It is recommended a crop management that considers the spatial variability of yield for greater economic return.

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Section: Resultsmentioning

confidence: 99%

Geostatistical analysis of Arabic coffee yield in two crop seasons

Carvalho

Silva

Ferraz

et al. 2017

Rev. bras. eng. agríc. ambient.

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“…The interference of weeds on coffee plants may be more damaging in the first two years after transplanting the seedlings into fields, due to the slow initial growth of the crop compared to the weed community (Fialho et al, 2010), making interventions necessary. To do so, control performing is necessary, and it is usually carried out through cutting and chemical control between the rows and through herbicides applied by directed spraying or manual weeding in the planting line (Melloni et al, 2012).…”

Section: Resumo -As Espécies De Trapoerabamentioning

confidence: 99%

Herbicide Mixtures to Control Dayflowers and Drift Effect on Coffee Cultures

Freitas

Furtado

et al. 2018

Planta daninha

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The dayflower species Commelina benghalensis and C. diffusa are among the main weeds in coffee crops. The purpose of this study was to evaluate the efficacy of herbicides/herbicide mixtures in controlling dayflower species and to evaluate the possible intoxication of coffee cultures, as well as the effect of mixture interactions. Two experiments were conducted, the first one in a 12 x 2 factorial arrangement with 12 herbicides/mixtures (glyphosate, glyphosate + metsulfuron-methyl, glyphosate + flumioxazin, glyphosate + 2.4-D, glyphosate + oxyfluorfen, glyphosate + carfentrazone-ethyl, metsulfuron-methyl, flumioxazin, 2.4-D, oxyfluorfen and carfentrazone-ethyl) and two dayflower species (C. benghalensis and C. diffusa) and the second one, in a 6 x 2 + 1 factorial arrangement, with six herbicides/mixtures (glyphosate, glyphosate + metsulfuron-methyl, glyphosate + flumioxazin, glyphosate + 2.4-D, glyphosate + oxyfluorfen and glyphosate + carfentrazone-ethyl) and two application forms on coffee plants (reaching 1/3 of the coffee canopy and with a protected canopy), plus a control treatment without herbicides. There was tolerance variation within the dayflower species to the tested herbicides. Commelina benghalensis was controlled by glyphosate, 2.4-D, glyphosate + 2.4-D and glyphosate + metsulfuron-methyl, while C. diffusa was controlled by 2.4-D and glyphosate mixtures by + metsulfuron-methyl, glyphosate + oxyfluorfen and glyphosate + flumioxazin. The mixture glyphosate + 2.4-D is effective in controlling dayflower, but it caused intoxication and growth reduction of the coffee. There was antagonism in the mixture glyphosate + carfentrazone-ethyl in controlling both species, as well as for glyphosate + oxyfluorfen and glyphosate + flumioxazin for C. benghalensis.

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“…A presença de outras espécies, mesmo que daninhas, nas entrelinhas, pode trazer benefícios para a cultura do café, como o aumento da diversidade biológica e da proteção da superfície do solo contra a erosão (Fialho et al 2010), porém, a competição de plantas daninhas por nutrientes é um forte fator limitante ao crescimento das plantas de café, reduzindo, em até 50%, o teor de macronutrientes e, em até 41%, o desenvolvimento de cafeeiros jovens (Carvalho et al 2013). observaram 20% de perdas na produtividade de lavouras adultas.…”

Section: Occurrence Of Weeds In Coffee Intercropped With Macadamiaunclassified

Ocorrência de plantas daninhas em cultivo consorciado de café e nogueira-macadâmia

Silva

Perdoná

Soratto

et al. 2013

Pesqui. Agropecu. Trop.

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INTRODUÇÃOApesar de, originalmente, ser uma planta de sub-bosque, o cafeeiro foi melhorado por décadas, resultando em plantas mais produtivas a pleno sol (café solteiro) e, por isto, esta é a principal modalidade de cultivo no Brasil (DaMatta et al. 2007 A arborização pode beneficiar os cafezais, reduzindo a velocidade dos ventos e a amplitude térmica na cultura. É possível, ainda, que a diminuição na radiação incidente possa influenciar a população de plantas daninhas e diminuir a necessidade de seu controle. Objetivou-se, com este trabalho, avaliar a população e a distribuição de plantas daninhas, na cultura de café arábica consorciado com três cultivares de nogueira-macadâmia, seis anos após o plantio, em Dois Córregos (SP). Os tratamentos consistiram de esquema fatorial 3x3+1, ou seja, café consorciado com três cultivares de nogueiramacadâmia (HAES 816, IAC 4-20 e IAC 9-20) e três locais de amostragem das plantas daninhas no consórcio (na projeção da copa da nogueira-macadâmia, entre as projeções das copas da nogueira-macadâmia e na entrelinha solteira), além de um tratamento adicional (café solteiro). Foram avaliados a incidência e o controle de plantas daninhas, bem como a caracterização fitossociológica. No cultivo de café consorciado com nogueiramacadâmia, a ocorrência e o número de espécies de plantas daninhas foram menores que no cultivo de café solteiro. Na projeção da copa e entre as projeções das copas da nogueiramacadâmia, houve, em média, 82% de redução na ocorrência de plantas daninhas, em comparação ao café solteiro. A cultivar IAC 9-20, por apresentar copa mais alta e de maior diâmetro, foi mais eficiente na redução da ocorrência de plantas daninhas, no consórcio com café. PALAVRAS-CHAVE:Coffea arabica L.; Macadamia integrifolia Maiden & Betche; planta invasora; sombreamento. Occurrence of weeds in coffee intercropped with macadamiaArborization can benefit coffee plantations by reducing the wind speed and temperature variation in the crop. It is also possible that the incident radiation can affect the weed populations and reduce the need for their control. This study aimed at assessing the weeds population and distribution, in arabica coffee intercropped with three macadamia cultivars, six years after planting, in Dois Córregos, São Paulo State, Brazil. Treatments consisted of a 3x3+1 factorial scheme, i.e., coffee intercropped with three macadamia cultivars (HAES 816, and three sampling positions of weeds in the intercropping (in the macadamia tree canopy projection, among the macadamia tree canopies projections and in the single rows), plus an additional treatment (sole coffee). The weeds incidence and control, as well as their phytosociological characterization, were evaluated. For coffee intercropped with macadamia, the weeds occurrence and number of species were smaller than for sole coffee. For the projection in the canopy and among canopies of macadamia trees, there was an average decrease of 82% in the occurrence of weeds, in comparison with the sole coffee. The IAC 9-20 cultivar was mo...

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Competição de plantas daninhas com a cultura do café em duas épocas de infestação

Cited by 22 publications

References 15 publications

Geostatistical analysis of Arabic coffee yield in two crop seasons

Geostatistical analysis of Arabic coffee yield in two crop seasons

Herbicide Mixtures to Control Dayflowers and Drift Effect on Coffee Cultures

Ocorrência de plantas daninhas em cultivo consorciado de café e nogueira-macadâmia

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