Interferência e estudo fitossociológico da comunidade infestante na cultura da beterraba transplantada

Carvalho, Leonardo Bianco de; Pitelli, Robinson Antônio; Filho, Arthur Bernardes Cecílio; Bianco, S.; Guzzo, Caio Dória

doi:10.4025/actasciagron.v30i3.3508

Cited by 14 publications

(15 citation statements)

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“…Weeds N. physaloides, E. indica and P. oleraceae are common in vegetable crops. These species were also found in research on crops of okra, beets and tomatoes (Nascente et al, 2004;Carvalho et al, 2008a;Bachega et al, 2013). Furthermore, these researchers have mentioned that in the treatments with longer periods of coexistence some plants substantially grow, as N. physaloides, preventing the incidence of light and decreasing, as a result, the possibility of emergence of other species of the weed community.…”

Section: Phytosociological Survey and Weed Interference In Eggplants mentioning

confidence: 94%

“…In other vegetable crops, such as okra and potatoes, productivity losses Phytosociological survey and weed interference in eggplants cultivation caused by weeds can be up to 96% and 40%, respectively (Ahmadvand et al, 2009;Bachega et al, 2013). In carrots and beets, these losses may reach 90% (Carvalho et al, 2008a, b).…”

Section: Phytosociological Survey and Weed Interference In Eggplants mentioning

confidence: 99%

“…In vegetable crops such as okra and carrots, yield losses caused by weeds can be up to 94% and 95% (Coelho et al, 2009;Bachega et al, 2013), respectively. In carrots, if there is no weed control, losses can reach 94% (Coelho et al, 2009), while beets can reach 70% (Carvalho et al, 2008a) to 90% (Carvalho et al, 2008b) in crops for transplanting seedlings and direct seeding, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Phytosociological Survey and Weed Interference in Eggplants Cultivation1

et al. 2016

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-Eggplants are vegetables of great importance in the South and Southeast regions of Brazil, which are subject to interference from weeds. In order to collaborate with weed management in this vegetable, this study was carried out to determine the periods of weed interference in growing eggplants. The study was conducted in the Brazilian municipality of Jaboticabal, SP, at the Faculty of Agricultural and Veterinary Sciences, UNESP [Universidade Estadual Paulista "Júlio de Mesquita Filho" (São Paulo State University)], in the period from February to July 2013. The experiment was arranged in a randomized block design with 22 treatments, three replications divided in 11 periods of coexistence and weed control with eggplants: 14, 28, 42, 56, 70, 84, 98, 112, 126, 140 and 154 days after transplanting (DAT). In each treatment, a phytosociological study was carried out to identify the important species of weeds in eggplant crops. The main weeds were Eleusine indica, Nicandra physaloides, Portulaca oleracea and Cyperus rotundus due to their high relative importance. The interference of these weeds caused losses of up to 96% to the standard commercial fruit yield. The period before interference was 6 DAT and the total period of interference was 102 DAT. Therefore, it is concluded that after the initial six days after transplanting eggplants, the crop should be free of weeds within the next 96 days.Keywords: Solanum melongena, competition, productivity, weed community. Nápoli: 14, 28, 42, 56, 70, 84, 98, 112, 126, 140 Palavras-chave: Solanum melongena, competição, produtividade, comunidade infestante. RESUMO -A berinjela é uma hortaliça de grande importância nas regiões Sul e Sudeste e, que está sujeita a interferências das plantas daninhas. Com o intuito de colaborar com o manejo das plantas daninhas nessa hortaliça, objetivou-se determinar os períodos de interferência das plantas daninhas no cultivo de berinjela Nápoli. O estudo foi realizado no município de Jaboticabal, SP, na Faculdade de Ciências Agrárias e Veterinárias da UNESP, no período de fevereiro a julho de 2013, no delineamento em blocos ao acaso com 22 tratamentos e três repetições, divididos em 11 períodos de convivência e de controle das plantas daninhas com a berinjela

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Section: Phytosociological Survey and Weed Interference In Eggplants mentioning

confidence: 94%

Section: Phytosociological Survey and Weed Interference In Eggplants mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phytosociological Survey and Weed Interference in Eggplants Cultivation1

et al. 2016

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“…The cultural practices used on crop (such as staking and sprout thinning) might have favored the growth of E. indica, which has a C4 cycle (CARNI; MUCINA, 1998), leading to a competitive advantage in places with high temperatures and high light conditions, which were provided by the cultural practices (CECÍLIO FILHO, 2009). …”

Section: Revmentioning

confidence: 99%

Weed Interference in Eggplant Crops

et al. 2017

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-Uncontrolled weed growth interferes with the growth eggplants and crop yields. To control weeds, the main weed species must be identified in crop growing areas and during weed control periods, as weed species might vary in relation to management practices. Therefore, this study aimed to identify the main weed species and determine the periods of weed interference in the eggplant cultivar Nápoli when grown under certain cultural practices, including plant staking and sprout thinning. The experiment was carried out in 2014 using a randomized complete block design, with 3 replications. The treatments consisted of 11 periods of (1) increasing weed control and (2) increasing coexistence of eggplant with weeds from the first day of transplanting (0-14, 0-28, 0-42, 0-56, 0-70, 0-84, 0-98, 0-112, 0-126, 0-140, and up do day 154). Eggplant staking and sprout thinning were performed 42 days after transplanting (DAT). Weed identification and crop yield assessments were performed to determine the Period Before Interference (PBI), Total Period of Interference Prevention (TPIP), and the Critical Period of Interference Prevention (CPIP). The major weeds found in the eggplant cultivar Nápoli were Eleusine indica, Portulaca oleracea, and Cyperus rotundus. Coexistence between the weed community and the eggplant throughout the entire crop production cycle reduced eggplant fruit yield by 78%. The PBI was 29 DAT and the TPIP was 48 DAT, resulting in 19 days of CPIP. Keywords:Competition. Weed community. Solanum melongena L.. Management practices.INTERFERÊNCIA DAS PLANTAS DANINHAS NA CULTURA DA BERINJELA RESUMO -As plantas daninhas, quando manejadas incorretamente, podem interferir no desenvolvimento e produtividade da berinjela. Para o controle destas plantas é fundamental identificar as principais espécies infestantes do local de cultivo e os períodos de controle, que podem variar de acordo com as práticas de manejo adotadas. Desta forma, o objetivo deste estudo foi identificar as principais plantas daninhas e determinar os períodos de interferência na cultura da berinjela cultiva 'Nápoli' sob manejo de tutoramento e desbrota. O experimento foi realizado no ano de 2014 no delineamento de blocos ao acaso, com três repetições. Os tratamentos consistiram de 11 períodos crescentes de controle e convivência com as plantas daninhas a partir do transplante: (0-14, 0-28, 0-42, 0-56, 0-70, 0-84, 0-98, 0-112, 0-126, 0-140 e 0-154 dias). As práticas de tutoramento e desbrota ocorreram aos 42 dias após o transplante (DAT). Realizou-se a identificação das plantas daninhas e avaliação da produtividade da cultura para determinação do período anterior à interferência (PAI), do período total de interferência (PTPI) e do período crítico de prevenção a interferência (PCPI). As principais plantas daninhas encontradas na cultura da berinjela 'Nápoli' foram Eleusine indica, Portulaca oleracea e Cyperus rotundus. O convívio entre comunidade infestante e cultura durante todo o ciclo da berinjela reduziu a produtividade de frutos em 78%. O PAI fo...

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“…Among the factors that affect the degree of interference, the coexistence period is considered one of the most important (Carvalho et al, 2008). As a function of the duration of the coexistence period, the interference periods can be estimated: PBI (period before interference), TPIP (total period of interference prevention) and CPIP (critical period of interference prevention), according to Pitelli and Durigan (1984).…”

Section: Introductionmentioning

confidence: 99%

Atrazine Reduces the Critical Period of Weed Interference on Narrow Row Corn

et al. 2016

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-The objective was to determine whether a change occurs in the critical period of weed interference prevention in narrow row corn with the use of atrazine and whether there is influence of the herbicide on crop yield components. The treatments consisted of periods without or with an initial weed control (0, 21, 35, 49, 63, 77, and 91 days after emergence), with or without application of atrazine in spikely post-emergence. The experiment was carried out in a 2 x 7 randomized blocks design (with and without weed control and seven periods with three replications). The use or not of atrazine was arranged in a split plot design. The most important weed species were Senecio brasiliensis, Urochloa plantaginea, Conyza bonariensis, Sida rhombifolia, and Solanum spp. Corn yield reduced by 15% and 18% with and without application of atrazine, respectively. The number of grains per spike and corn yield were negatively influenced by coexistence with weeds, while the number of rows per spike, the diameter and length of spike were not affected. Corn yield components were not affected by the use of atrazine. The critical period of weed interference prevention was 35 days without atrazine and 23 days with application of atrazine. There is a reduction of the critical period of weed interference prevention on narrow row corn by using atrazine, with no influence of the herbicide on crop yield.Keywords: herbicide, period of coexistence, Zea mays. (0, 21, 35, 49, 63, 77 RESUMO -O objetivo deste estudo foi verificar se ocorre alteração no período crítico de prevenção à interferência de plantas daninhas em milho adensado com o uso de atrazine e se há influência do herbicida sobre componentes de rendimento da cultura. Os tratamentos consistiram em períodos sem ou com controle inicial de plantas daninhas

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Interferência e estudo fitossociológico da comunidade infestante na cultura da beterraba transplantada

Cited by 14 publications

References 1 publication

Phytosociological Survey and Weed Interference in Eggplants Cultivation1

Phytosociological Survey and Weed Interference in Eggplants Cultivation1

Weed Interference in Eggplant Crops

Atrazine Reduces the Critical Period of Weed Interference on Narrow Row Corn

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