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| Oliveira Jr,R.S.; Rios,F.A.; Constantin,J.; Ishii-Iwamoto,E.L.; Gemelli,A.; Martini,P.E.. |
| Sorghum, pearl millet, and Brachiaria ruziziensis have similar characteristics which have led to their use for mulch formation in no-till systems. This study was carried out to evaluate the potential of these three species as straw suppliers to suppress weed emergence. Initial findings led to the conclusion that both pearl millet and Brachiaria ruziziensis have similar or superior potential as weed suppressors, compared to sorghum straw, a species with recognized allelopathic potential. Subsequently, new trials were conducted under greenhouse conditions by sowing weed species in pots, followed by covering of the soil with the straw under evaluation. Independent experiments were conducted for Euphorbia heterophylla and Bidens pilosa. In each experiment, the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelopathy; No-till; Beggarticks; Poinsettia. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000100002 |
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| Arantes,J.G.Z.; Constantin,J.; Oliveira Jr.,R.S.; Braz,G.B.P.; Barbosa,C.A.S.; Brugnera,P.; Oliveira Neto,A.M.; Gemelli,A.. |
| Cotton is highly susceptible to the interference imposed by weed community, being therefore essential to adopt control measures ensuring the crop yield. Herbicides are the primary method of weed control in large-scale areas of production, and usually more than one herbicide application is necessary due to the extensive crop cycle. This study aimed to evaluate the selectivity of different chemical weed control systems for conventional cotton. The experiment took place in the field in a randomized block design, with twenty nine treatments and four replications in a split plot layout (adjacent double check). Results showed that triple mixtures in pre-emergence increased the chance of observing reductions in the cotton yield. To avoid reductions in crop yield,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Application modalities; Tank mixture. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400018 |
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| Arantes,J.G.Z.; Constantin,J.; Oliveira Jr.,R.S.; Braz,G.B.P.; Takano,H.K.; Gemelli,A.; Oliveira Neto,A.M.; Brugnera,P.. |
| O amonio-glufosinate é um herbicida de amplo espectro de controle de plantas daninhas, porém não apresenta controle residual no solo, o que limita sua utilidade quando usado isoladamente na cultura do algodão, havendo a necessidade de combinar diferentes herbicidas em mais de uma modalidade de aplicação. O objetivo deste trabalho foi avaliar a seletividade de diferentes sistemas de controle químico de plantas daninhas contendo clomazone na cultura do algodão LL(r). As misturas triplas em pré-emergência apresentaram maior potencial de redução no porte do algodoeiro. Recomenda-se utilizar misturas de dois herbicidas em pré-emergência na cultura do algodão, com aplicação de S-metolachlor em over the top, seguido de duas aplicações em pós-emergência de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gossypium hirsutum; Modalidades de aplicação; Mistura em tanque; Culturas geneticamente modificadas. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200283 |
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