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| CORREA, J. C.; AGUIAR, J. L. P. de. |
| RESUMO: O trabalho foi realizado com o objetivo de avaliar a eficácia e a viabilidade econômica do uso de herbicidas para o controle dos rebrotamentos das soqueiras do algodoeiro herbáceo (Gossypium hirsutum L. r. latifolium Hutch) no sistema de plantio direto no Cerrado. O ensaio foi conduzido em duas épocas depois do corte do algodoeiro. Na primeira época (53 dias após o corte), foram aplicadas doses dos herbicidas: glyphosate (480g/litro do sal de isopropilamina), 2,4 D (806g/litro do sal dimetilamina do ácido 2,4D diclorofenoxiacético) e mistura dos dois ingredientes. Na segunda (161 dias após o corte), foram aplicadas doses de herbicidas e, 10 dias depois da aplicação, os rebrotamentos foram cortados. Nas áreas correspondentes às duas épocas, foram... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Planta daninha; Production system.; Algodão; Cerrado; Controle Químico; Gossypium Hirsutum; Herbicida; Rebrota; Soca.; Sistema de Produção; Herbicides; Chemical control; Cotton; Regrowth; Ratooning; Weeds.. |
| Ano: 2004 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/563883 |
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| Pedreira,Carlos Guilherme Silveira; Silva,Valdson José da; Guimarães,Murilo Saraiva; Pequeno,Diego Noleto Luz; Tonato,Felipe. |
| Abstract: The objective of this work was to evaluate the effects of variable and fixed rest periods on the forage production, plant-part composition, and canopy structural characteristics of 'Tifton 85' and 'Jiggs' Bermuda grass (Cynodon spp.) pastures under rotational stocking. The treatments were two grass cultivars (Jiggs and Tifton 85) and two rest periods (grazing starting whenever the canopy reached 25 cm or every 28 days, regardless of canopy height). A completely randomized experimental design, with a 2×2 factorial arrangement (two grass cultivars and two managements), was used with three replicates. The experiment was carried out during the summer growing season in Piracicaba, SP, Brazil. Pre- and post-grazing forage mass chacteristics were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cynodon; Canopy height; Grazing frequency; Light interception; Pasture management; Regrowth. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000100113 |
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| Giacomini,Alessandra Aparecida; Silva,Sila Carneiro da; Sarmento,Daniel Oliveira de Lucena; Zeferino,Cauê Varesqui; Souza Júnior,Salim Jacaúna; Trindade,Júlio Kuhn da; Guarda,Vítor del'Alamo; Nascimento Júnior,Domicio do. |
| Grazing strategies alter sward leaf area patterns of growth, affecting herbage accumulation and utilisation. The objective of this experiment was to evaluate the growth of marandu palisadegrass (Brachiaria brizantha cv. Marandu) swards subjected to strategies of intermittent stocking. The experiment was carried out in Piracicaba, São Paulo, Brazil, from October/2004 to September/2005. Swards were grazed at 95 and 100% canopy light interception (LI) to post-grazing heights of 10 and 15 cm, following a 2 × 2 factorial arrangement with four replications in a randomised complete block design. The response variables evaluated were: crop growth rate, relative growth rate, net assimilation rate, leaf area ratio and leaf weight ratio. In early and late spring, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Canopy light interception; Regrowth; Grazing management. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162009000600003 |
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| Lemos,J.P.; Galvão,J.C.C.; Silva,A.A.; Fontanetti,A.; Cecon,P.R.; Lemos,L.M.C.. |
| Mowing is one of the most important methods used to control weeds in organic farming, under the no-tillage system. This study aimed to evaluate the effects of three weed management techniques on weed development, using the weeds Bidens pilosa and Commelina benghalensis, in competition with organic corn {mowing at the three-leaf stage (14 days after corn emergence - DACE), mowing at the three- and six-leaf stage (14 and 25 DACE), and no mowing. Single cultivation with no mowing was also evaluated for these weeds. Mowings performed at 14 and 25 DACE prevented the production of B. pilosa seeds, ensuring efficient control of this species. However, the use of this technique was shown to be inefficient in the control of C. benghalensis. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mowings; Regrowth; Morphology; Competition. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200012 |
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| Silva,Rafael Azevedo da; Degrande,Paulo Eduardo; Gomes,Carlos Eduardo Carducci; Souza,Ellen Patricia de; Leal,Mateus Fuchs. |
| Abstract: The objective of this work was to analyze the faunistic composition of the insect pests that occur during the fallow period in cotton (Gossypium hirsutum) crop residues in the state of Mato Grosso do Sul, Brazil. The study sites were the municipalities of Alcinópolis, Chapadão do Sul, Costa Rica, Aral Moreira, Dourados, and Sidrolândia. A sampling design with two replicates per municipality was used. Each replicate comprised 100 random points, and each point corresponded to a cotton plant that was entirely inspected, to count the insect pests on it. The obtained fauna was analyzed and a rarefaction curve of the species was generated. During the evaluation period, a total of 23 species were recorded in the cotton crop residue, and the most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anthonomus grandis; Gossypium hirsutum; Host plant; Legislation; Regrowth. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000800875 |
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