5 documents found, page 1 of 1
Relação entre propriedades químicas e físicas do solo e sorção, dessorção e pot...
Oliveira Júnior, Rubem Silvério deCoordenação de Aperfeiçoamento de Pessoal de Nível Superior; Técnicas de equilíbrio de partição foram empregadas em ensaios de laboratório, para estudar a correlação entre propriedades dos solos e sorção, visando o estabelecimento de equações simples que proporcionassem a determinação dos coeficientes de partição a partir de resultados de análises de solo de rotina. Estudou-se ainda a variabilidade espacial da ...
The leaching of trifloxysulfuron-sodium and pyrithiobac-sodium in soil columns ...
Guerra, Naiara; Oliveira Júnior, Rubem Silvério de; Constantin, Jamil; Oliveira Neto, Antonio Mendes de; Dan, Hugo de AlmeidaScarce research has been published concerning the effect of soil pH on the leaching potential of herbicides in tropical soils. Thus, we designed this study to evaluate the influence of soil liming on the leaching of trifloxysulfuron-sodium and pyrithiobac-sodium after simulated rainfall depths in soil columns. In the study, two trials were conducted simultaneously; the first experiment evaluated trifloxysulfuro...
Alterations in physical and chemical properties of a distrofic red latosol unde...
Trintinalio, Juliano; Tormena, Cássio Antonio; Oliveira Júnior, Rubem Silvério de; Machado, Jorge Luiz; Constantin, JamilStudies aiming to evaluate soil management systems in inter-rows of peach palm are still scarce in Brazil. This work was proposed to evaluate the effects of different soil management systems in peach palm inter rows on chemical and physical properties of a dystrophic Red Latosol. Treatments evaluated included weed control with herbicides (HB); soil covered with sugarcane bagasse (SB); alternate green manures wi...
Effect of burndown management on desiccation speed, initial weed emergence, dev...
Jaremtchuk, Carla Cristina; Constantin, Jamil; Oliveira Júnior, Rubem Silvério de; Biffe, Denis Fernando; Alonso, Diego GonçalvesIn no-tillage systems, burndown is one of the most important steps to achieve maximum initial crop growth and minimize weed interference during early stages of the crop cycle. The purpose of this work was to evaluate the effect of different burndown systems before no-tillage sowing of soybean. A field experiment was carried out in Iguaraçu, Paraná State, during the 2004/2005 growth season. Under field condition...
Methods of evaluation of the selectivity of herbicides for sugarcane (Saccharum...
Fagliari, Júlio Roberto; Oliveira Júnior, Rubem Silvério de; Constantin, JamilResearch evaluated the selectivity of herbicides applied to sugarcane, Saccharum spp. (Poaceae), with no weed interference. Twofold checks were undertaken and data were analyzed in two different ways. First, areas treated with herbicides were compared to the average value of all twofold checks. In this case, the conventional method for studying selectivity, herbicide affected neither growth nor yield characteri...