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| PADILHA,M.; BARROSO,A.A.M.; CARVALHO,L.B.; COSTA,F.R.; BIANCO,S.. |
| ABSTRACT 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... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; Period of coexistence; Zea mays. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400721 |
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| BIANCO,S.; CARVALHO,L.B.; BIANCO,M.S.; YAMAUCHI,A.K.F.. |
| O experimento foi conduzido com o objetivo de analisar o crescimento e a distribuição de matéria seca e os teores e acúmulos dos macronutrientes em plantas de Urochloa arrecta cultivadas em condições padronizadas de nutrição mineral. As plantas cresceram em vasos de sete litros com substrato de areia, irrigados diariamente com solução nutritiva, e foram mantidas em casa de vegetação. Os tratamentos corresponderam às épocas de avaliação (21, 35, 49, 63, 77, 91, 105, 119, 133, 147 e 161 dias após a emergência – DAE) e foram arranjados em delineamento inteiramente casualizado com quatro repetições. Plantas de U. arrecta apresentaram baixo acúmulo (menor que 7% dos valores máximos acumulados aos 161 DAE) de matéria seca (5,1 g MS por planta) e de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Braquiária-do-brejo; Planta daninha; Matéria seca; Nutrientes. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100033 |
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| MOSSIN,C.B.; HIJANO,N.; NEPOMUCENO,M.P.; CARVALHO,L.B.; ALVES,P.L.C.A.. |
| ABSTRACT: Sugarcane is one of the most important crops planted in Brazil in that the presence of weeds in the fields has promoted significant yield reduction. The objective of this work was to evaluate the differential growth response of two sugarcane varieties cropped in the ‘Plene’ system as a function of the coexistence with different weed species. Treatments consisted of the coexistence of Bidens pilosa plus Ipomoea quamoclit, Ipomoea hederifolia, Amaranthus viridis, Urochloa plantaginea, Panicum maximum, and Digitaria horizontalis with two sugarcane varieties (RB92579 and SP80-1842) cropped in the ‘Plene’ system, in addition to a control without weeds. The design was completely randomized with three replicates. Dry matter accumulation of weeds was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum officinarum; Morning glory; Slender amaranth; Marmalade grass; Guinea grass; Jamaican crabgrass. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100188 |
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| ULJOL,L.H.O.; BIANCO,S.; FILHO,A.B.C.; BIANCO,M.S.; CARVALHO,L.B.. |
| ABSTRACT: The objective of this work was to determine the interference periods of weeds of the bell pepper cultivar ‘Dahra’. Two experiments were conducted during the years 2014/15 (harvest with lower rainfall) and 2015/16 (harvest with higher rainfall). The treatments consisted of 11 growing periods of cohabitation and weed control with ‘Dahra’ bell peppers: 14, 28, 42, 56, 70, 84, 98, 112, 126, 140 and 154 days after transplanting (DAT). For the determination of the interference periods, the productivity data were analyze using the Boltzmann sigmoidal regression model. The main weeds were Eleusine indica, Brachiaria plantaginea, Digitaria nuda and Nicandra physaloides for presenting high biomass and relative density. The concomitance of these weeds... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Competition; Coexistence. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100247 |
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| MARQUES,L.J.P.; BIANCO,M.S.; BIANCO,S.; FILHO,A.B.C.; CERVEIRA JR,W.R.; CARVALHO,L.B.. |
| ABSTRACT: The presence of weeds may affect both growth and nutrition of agricultural crops due to interference. The objective was to evaluate the interference of weeds in the dry mass distribution and in the accumulation of dry mass and macronutrients in eggplant. The treatments consisted of increasing weed-free and weedy periods (0-14, 0-28, 0-42, 0-56, 0-70, 0-84, 0-98, 0-112, 0-126, 0-140 and 0-154 days after transplanting) in eggplant ‘Nápoli’. The experiment was arranged in a randomized block design with three replicates. Weeds affected the distribution of dry mass between vegetative and reproductive organs of eggplant. There was a significant reduction in the accumulation of dry mass and macronutrients when weeds grew with eggplant crop beyond 42... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum melogena; Weed competition; Plant growth; Mineral nutrition. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100298 |
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