Capim-marandu submetido a solu??o contendo nicosulfuron por diferentes per?odos de armazenamento

Objetivou-se com o presente trabalho avaliar o efeito de diferentes tempos de armazenamento da solu??o do herbicida nicosulfuron sob a efici?ncia no crescimento e fisiologia do capim-marandu. O experimento foi conduzido em casa de vegeta??o na UFVJM, campus JK, em Diamantina-MG. O delineamento experimental foi inteiramente casualizado, com sete repeti??es. Os tratamentos foram distribu?dos em esquema fatorial (6x5)+1, sendo seis tempos de armazenamento da solu??o do herbicida nicosulfuron (0, 6, 12, 24, 48 e 72 horas) aplicado na Brachiaria brizantha Stapf cv. marandu (capim-marandu) (syn. Urochloa brizantha), e cinco ?pocas de avalia??o 0, 7, 14, 21 e 60 dias ap?s aplica??o do herbicida (DAA), mais testemunha sem aplica??o. Avaliou-se as caracter?sticas de intoxica??o, crescimento e fisiol?gicas do capim-marandu. Observou-se redu??o do pH da ?gua ap?s a adi??o do herbicida, promovendo acidifica??o da solu??o, e quanto maior o tempo de armazenamento da solu??o do herbicida, menor foi o pH. A intoxica??o promovida pelo nicosulfuron no capim-marandu aumentou significativamente de acordo com os dias ap?s a aplica??o. J? com rela??o ao tempo de armazenamento da solu??o, constatou-se maior efeito intoxicante no tempo zero de armazenamento do herbicida, observando-se decr?scimo desses valores com o aumento do tempo de armazenamento. O n?mero de perfilhos a?reos (NPA) foi maior no tempo zero horas, reduzindo 72 horas. J? para o n?mero de perfilhos basais (NPB) ocorreu o inverso do NPA. Para as caracter?sticas fisiol?gicas como taxa de transporte de eletros (ETR) e efici?ncia do fotossistema II (Fv/Fm) foram observadas diferen?as entre as ?pocas de avalia??o. J? o CO2 consumido (?C), taxa de transpira??o (E), condut?ncia estom?tica de vapores de ?gua (Gs), taxa fotossint?tica (A) e efici?ncia no uso da ?gua (EUA) menores valores com o aumento dos dias de avalia??o e menores valores no tempo de armazenamento de zero horas quando comparamos com os tempos com mais de 48 horas de armazenamento, por?m para os valores de carbono interno (Ci) observou-se o contr?rio. O tempo de armazenamento da solu??o herbicida de nicosulfuron afeta diretamente as caracter?sticas produtivas e fisiol?gicas do capim-marandu, pois, quanto maior o tempo de armazenamento da solu??o, menor ser? a efici?ncia desse herbicida, devido a hidr?lise da mol?cula herbicida. O tempo de armazenamento da solu??o herbicida afeta diretamente no pH da ?gua, onde quanto maior esse tempo menor ser? o pH da ?gua e menor os n?veis de intoxica??o das plantas de capim-marandu, sem todavia, interferir no tamanho das plantas. O aumento do tempo de armazenamento da solu??o herbicida reduz o perfilhamento a?reo e aumenta o basal. O armazenamento da solu??o do herbicida nicosulfuron afeta os par?metros fisiol?gicos: CO2 consumido, E, A e EUA aumentando seus valores.Disserta??o (Mestrado) ? Programa de P?s-Gradua??o em Zootecnia, Universidade Federal dos Vales do Jequitinhonha e Mucuri, 2018.The objective of this work was to evaluate the effect of different storage times of the herbicide nicosulfuron under the efficiency of the growth of marandu grass. The experiment was conducted in a greenhouse at the UFVJM, JK campus, in Diamantina-MG. The experimental design was completely randomized, with seven replications. The treatments were distributed in a factorial scheme (6x5) +1, with six storage times of the herbicide nicosulfuron (0, 6, 12, 24, 48 and 72 hours) applied in Brachiaria brizantha Stapf cv. and five evaluation periods 0, 7, 14, 21 and 60 days after application of the herbicide (DAA), plus control without application. It was evaluated the intoxication, growth and physiological characteristics of the marandu grass. It was observed a reduction of the pH of the water after the addition of the herbicide, promoting acidification of the solution, and the longer the storage time of the herbicide, the lower the pH. The intoxication promoted by nicosulfuron in the marandu grass increased significantly according to the days after the application. Regarding the time of storage of the syrup, it was verified a greater intoxicating effect in the zero time of storage of the herbicide, observing a decrease of these values with the increase of the time of storage. The number of aerial tiller (NPA) was higher at time zero hours, reducing 72 hours. As for the number of basal tillers (NPB), the inverse of NPA occurred. For the physiological characteristics such as electron transport rate (ETR) and efficiency of photosystem II (Fv / Fm), differences between the epochs of evaluation were observed. On the other hand, CO2 consumption (?C), transpiration rate (E), stomatal conductance of water vapors (Gs), photosynthetic rate (A) and water use efficiency (US) values in the storage time of zero hours when compared with the times with more than 48 hours of storage, but for the values of internal carbon (Ci) the opposite was observed. The storage time of the herbicide syrup of nicosulfuron directly affects the productive and physiological characteristics of the marandu grass, because the longer the storage time of the syrup, the lower the herbicide efficiency due to the hydrolysis of the herbicide molecule. The storage time of the herbicide solution directly affects the pH of the water, where the longer the water pH, the lower the levels of intoxication of the marandu grass plants, without interfering with the size of the plants. The increase in the storage time of the herbicide syrup reduces aerial tillering and increases the basal. The storage of the herbicide nicosulfuron affects the physiological parameters: CO2 consumed, E, A and WUE increasing their values

Migração Inter-Regional no Brasil: Evidências a partir de um Modelo Espacial

This work looks for empirical evidence about the determinants of inter-regional migration in Brazil. In this investigation, it considers both the importance of human capital theory, by focusing income expectation, and the importance of location or neighbors of states, by controlling for neighbors’ attractive characteristics. The results point out several important aspects of Brazilian migration. First, spatial controls are fundamental to determinate the role of income expectation in net rate of inter-regional migration, consequently, previous works sub estimate the role of this variable in Brazil internal migration. Second, social and natural local attractive characteristics, besides income expectation, are also important to explain the net rate of inter-regional migration in Brazil.Migração Regional, Capital Humano, Modelo Espacial, Dados em Painel

Effectiveness of Cratylia argentea as an animal feed supplement in the control of gastrointestinal nematodes in sheep

Gastrointestinal nematodes are considered one of the most important sanitary problems affecting ruminants globally; whether parasitizing alone or acting with other pathogens, they are responsible for severe economic losses related to animal husbandry. Endoparasites in small ruminants are usually controlled with anti-helminthic drugs. However, certain strains of endoparasites are resistant to such drugs. Supplementation of the diet with protein-rich foods is one strategy for reducing the negative impact of gastrointestinal parasites. Cratylia argentea has anthelmintic properties and other characteristics that favor its use as an animal feed supplement. In the present study, we subdivided crossbred lambs into homogeneous groups and fed them C. argentea (G1), C. argentea plus Brachiaria spp. (G2), or Brachiaria spp. (G3) only. The animals in group G1 had a lower average number of eggs per gram of feces (EPG) at Day 42 (p 0.05), indicating the absence of anemia and normal globular volume. This reinforces the importance of the measurement of EPG; this is a quantitative method and does not depend on the subjective interpretation of the results

A influência de atividades esportivas e musicais na saúde mental dos estudantes de medicina de Anápolis

RESUMO: A saúde mental é um tema cada vez mais abordado pela comunidade científica, principalmente por sua relevância para uma boa qualidade de vida das pessoas. O objetivo geral desse trabalho é avaliar a saúde mental dos estudantes de medicina da UniEVANGÉLICA, e a relação desta com a prática de atividades esportivas e/ou musicais. Serão analisados dados coletados através de questionários validados de estudo da saúde mental, aplicados em estudantes do 1º ao 8º período do curso de medicina. Espera-se estabelecer um vínculo maior entre a instituição UniEVANGÉLICA e os projetos acadêmicos extracurriculares da faculdade de Medicina. Também serão analisados artigos do Scielo e do Pubmed que servirão como embasamento para a retificação dos dados coletados

Reduced SLIT2 is Associated with Increased Cell Proliferation and Arsenic Trioxide Resistance in Acute Promyelocytic Leukemia

Simple Summary In solid tumors, the altered expression of embryonic genes such as the SLIT-ROBO family has been associated with poor prognosis, while little is known about their role in acute myeloid leukemia (AML). Previous studies reported frequent hypermethylation of SLIT2 mediated by the methyltransferase enzyme EZH2 and more recently the PML protein, which are commonly found to be aberrantly expressed in AML. Here, we aim to assess retrospectively the clinical relevance of the SLIT2 gene in acute promyelocytic leukemia, a homogenous subtype of AML. We demonstrated that reduced SLIT2 expression was associated with high leukocyte counts and reduced overall survival in different APL cohorts. STLI2 treatment decreased APL growth, while SLIT2 knockdown accelerated cell cycle progression and proliferation. Finally, reduced expression of SLIT2 in murine APL blasts resulted in fatal leukemia associated with increased leukocyte counts in vivo. These findings demonstrate that SLIT2 can be considered as a prognostic marker in APL, and a potential candidate for clinical studies of a more heterogeneous disease, such as AML. The SLIT-ROBO axis plays an important role in normal stem-cell biology, with possible repercussions on cancer stem cell emergence. Although the Promyelocytic Leukemia (PML) protein can regulate SLIT2 expression in the central nervous system, little is known about SLIT2 in acute promyelocytic leukemia. Hence, we aimed to investigate the levels of SLIT2 in acute promyelocytic leukemia (APL) and assess its biological activity in vitro and in vivo. Our analysis indicated that blasts with SLIT2(high) transcript levels were associated with cell cycle arrest, while SLIT2(low) APL blasts displayed a more stem-cell like phenotype. In a retrospective analysis using a cohort of patients treated with all-trans retinoic acid (ATRA) and anthracyclines, high SLIT2 expression was correlated with reduced leukocyte count (p = 0.024), and independently associated with improved overall survival (hazard ratio: 0.94; 95% confidence interval: 0.92-0.97; p <0.001). Functionally, SLIT2-knockdown in primary APL blasts and cell lines led to increased cell proliferation and resistance to arsenic trioxide induced apoptosis. Finally, in vivo transplant of Slit2-silenced primary APL blasts promoted increased leukocyte count (p = 0.001) and decreased overall survival (p = 0.002) compared with the control. In summary, our data highlight the tumor suppressive function of SLIT2 in APL and its deteriorating effects on disease progression when downregulated

Grass tillering brachiaria and ruziziensis grass after herbicide application

Todos os textos, informa??es e resultados apresentados s?o de inteira responsabilidade dos autores.Parte da disserta??o do segundo autor, financiado pelo Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq), Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG), Coordenac?o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES).Objetivou-se com este trabalho avaliar o efeito dos herbicidas lactofen, fomesafen, clomazone, mesotrione, fluazifop-p-butil, fluazifop-p-butil + fomesafen, nicosulfuron e glyphosate aplicados em p?s-emerg?ncia no n?mero de perfilhos basais e a?reos do capim-braqui?ria e do capim-ruziziensis. O experimento foi conduzido em vasos de 1,5 L cultivados em casa de vegeta??o no Campus JK da UFVJM ? Diamantina. O delineamento experimental foi em blocos casualizados, com cinco repeti??es. Os tratamentos foram dispostos em esquema fatorial (8x2) + 2 sendo oito herbicidas: glyphosate, nicosulfuron, clomazone, fluazifop?p?butil + fomesafen, lactofen, fomesafen, fluazifop?p?butil e mesotrione, aplicados na dose recomendada pelo fabricante, em duas esp?cies forrageiras Brachiaria decumbens cv. Basilisk e Brachiaria ruziziensis, mais duas testemunhas, sem aplica??o dos herbicidas. Em cada vaso foram cultivadas duas plantas de capim-braqui?ria ou duas de capim-ruziziensis. Aos 30 dias ap?s a aplica??o (DAA), as plantas de ambas as esp?cies foram colhidas ao n?vel do solo, para determina??o do n?mero de perfilhos a?reos e basais. Os herbicidas glyphosate, fluazifop-p-butil + fomesafen, fluazifop-p-butil e nicosulfuron apresentaram redu??o no capim-ruziziensis para o n?mero de perfilhos basais em rela??o ? testemunha. Todos os herbicidas diferiram da testemunha para n?mero de perfilhos basais no capim-braqui?ria, sendo, glyphosate, fluazifop-p-butil + fomesafen, fluazifop-p-butil e nicosulfuron, os herbicidas que mais influenciaram na redu??o do n?mero de perfilhos basais. As plantas de capim-braqui?ria apresentaram maior sensibilidade aos herbicidas clomazone, lactofen e fomesafen quando comparado ao seu efeito no n?mero de perfilhos a?reos no capim-ruziziensis.Aimed on this study to evaluate the effect of the herbicides lactofen, fomesafen, clomazone, mesotrione, fluazifop-p-butyl, fluazifop-p-butyl + fomesafen, nicosulfuron, and glyphosate applied in port-emergence on the number of basal and aerial tillers of the signal grass and congo grass. The experiment was conducted in 1.5 L containers in the greenhouse of the Campus JK, at the UFVJM ? Diamantina. The experimental design was in randomized block, with five repetitions.The treatments were organized in factorial scheme (8x2) + 2 being 8 herbicides: glyphosate, nicosulfuron, clomazone, fluazifop?p?butyl + fomesafen, lactofen, fomesafen, fluazifop? p?butyl, and mesotrione, applied on the dose recommended by the manufacturer, on two forage species Brachiaria decumbens cv. Basilisk and Brachiaria ruziziensis, and two more without the application of herbicides. In each container were cultivated two plants of signal grass or two of congo grass. At 30 days after application (DAA), the plants of both species were harvested at the ground level, to determine the number of basal and aerial tillers. The herbicides glyphosate, fluazifop-p-butyl + fomesafen, fluazifop-p-butyl, and nicosulfuron presented reduced number of basal tillers on the congo grass comparing to the ones without herbicides. All herbicides differed of the witness, without herbicides, on the number of basal tillers on the signal grass, the glyphosate, fluazifop-p-butyl + fomesafen, fluazifop-p-butyl, and nicosulfuron are the herbicides that had more influence on the reduction of the number of basal tillers. The plants of signal grass presented bigger sensibility to the herbicides clomazone, lactofen, and fomesafen when comparing to its effect on the number of aerial tillers of the congo grass

Dry matter yield of signal grass tillers and grass ruziziensis submitted to the application of herbicides

Todos os textos, informa??es e resultados apresentados s?o de inteira responsabilidade dos autores.Parte da disserta??o do primeiro autor, financiado pelo Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq), Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG), Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES).Objetivou-se com este trabalho avaliar a produ??o de massa seca de perfilhos a?reos e basais do capimbraqui?ria e do capim-ruziziensis aos herbicidas lactofen, fomesafen, clomazone, mesotrione, fluazifop-p-butil, fluazifop-p-butil + fomesafen, nicosulfuron e glyphosate. O experimento foi conduzido em vasos de 1,5 L cultivados em casa de vegeta??o no Campus JK da UFVJM Diamantina. O delineamento experimental foi em blocos casualizados, com cinco repeti??es. Os tratamentos foram dispostos em esquema fatorial (8x2) + 2 sendo oito herbicidas: glyphosate, nicosulfuron, clomazone, fluazifop p butil + fomesafen, lactofen, fomesafen, fluazifop p butil e mesotrione, aplicados na dose recomendada pelo fabricante, em duas esp?cies forrageiras Brachiaria decumbens cv. Basilisk e Brachiaria ruziziensis, mais duas testemunhas, sem aplica??o dos herbicidas. Em cada vaso foram cultivadas duas plantas de capim-braqui?ria ou duas de capim-ruziziensis. Aos 30 dias ap?s a aplica??o (DAA), as plantas de ambas as esp?cies foram colhidas ao n?vel do solo, para determina??o da massa seca de perfilhos basais e a?reos ap?s secagem em estufa de ventila??o for?ada de ar a 60 ?C. N?o foram observadas diferen?as do herbicida clomazone em rela??o ? testemunha para massa seca de perfilhos basais do capim-ruziziensis, entretanto, os demais herbicidas afetaram negativamente a massa seca de perfilhos basais da esp?cie. Os herbicidas clomazone e fomesafen n?o apresentaram redu??o dos teores de massa seca de perfilhos basais no capim-braqui?ria em rela??o ? testemunha. O capim-braqui?ria e capim-ruziziensis foram mais influenciados pelos herbicidas glyphosate, fluazifop-p-butil + fomesafen, fluazifop-p-butil e nicosulfuron, os quais, n?o permitiram o aparecimento de perfilhos a?reos em ambas as esp?cies.The objective of this study was to evaluate the production of the dry mass of aerial and basal tillers of the signal grass and congo grass to the herbicides lactofen, fomesafen, clomazone, mesotrine, fluazifop-p-butyl, fluazifopp- butyl + fomesafen, nicosulfuron, and glyphosate. The first experiment was conducted in 1.5 L containers installed in the greenhouse in the Campus JK of the UFVJM Diamantina. The experimental design was in randomized block, with five repetitions. The treatments were organized in factorial scheme (8x2) + 2 being 8 herbicides: glyphosate, nicosulfuron, clomazone, fluazifop p butyl + fomesafen, lactofen, fomesafen, fluazifop p butyl, and mesotrione, applied on the dose recommended by the manufacturer, on two forage species Brachiaria decumbens cv. Basilisk and Brachiaria ruziziensis, and two more without the application of herbicides. In each container were cultivated two plants of signal grass or two of congo grass. At 30 days after application (DAA), the plants of both species were harvested on the ground level, to determine the dry mass of the aerial and basal tillers after drying on forced air oven at 60?C. It was not observed differences on the herbicide clomazone in relation to the plants without herbicides, to dry mass of basal tillers of the congo grass, however, the others herbicides negatively affected the dry mass of the basal tillers of the specie. The herbicides clomazone and fomesafen did not show reduction on the dry mass content of the signal grass comparing with the one without herbicides. The signal grass and congo grass were more influenced by the herbicides glyphosate, fluazifop-p-butyl + fomesafen, fluazifop-p-butyl, and nicosulfuron, which did not allow the growth of aerial tillers on both species

Poisoning level of grass ruziziensis and grass brachiaria after times differents glyphosate assessment

Todos os textos, informa??es e resultados apresentados s?o de inteira responsabilidade dos autores.Parte do trabalho de Inicia??o Cientifica do primeiro autor, financiado pelo Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq), Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG), Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES).Objetivou-se avaliar o n?vel de intoxica??o de Brachiaria ruziziensis (capim-ruziziensis) e Brachiaria decumbens (capim-braqui?ria) em diferentes ?pocas de avalia??o com a aplica??o do herbicida glyphosate. Os tratamentos foram distribu?dos no esquema fatorial (6 x 2), sendo seis doses do herbicida (0; 90; 180; 360; 540 e 720 g ha-1 de glyphosate) e duas esp?cies de Brachiaria (Brachiaria decumbens e Brachiaria ruziziensis). O delineamento experimental utilizado foi em blocos casualizados, com cinco repeti??es. Cada parcela foi constitu?da por um vaso contendo 7 L de solo e plantas de capim-ruziziensis e capim-braqui?ria. A avalia??o do n?vel de intoxica??o das plantas de capim-ruziziensis e capim-braqui?ria foi realizada aos 7, 15 e 30 dias ap?s aplica??o do herbicida ? DAA, por meio de avalia??o visual, atribuindo-se notas de 0 a 100%, sendo 0 aus?ncia de intoxica??o e 100 intoxica??o total ou controle das plantas. Com o aumento das doses de glyphosate ocorreu uma maior intoxica??o das plantas de capim-braqui?ria e capim-ruziziensis. O glyphosate proporciona intoxica??o de 100% em plantas de capim-braqui?ria e capim-ruziziensis, mesmo na menor dose de 90 g e.a. ha-1 de glyphosate, sendo observado a partir dos 15 dias ap?s a aplica??o, podendo ser utilizado com efici?ncia para o controle dessas esp?cies no in?cio de desenvolvimento

Levels of chlorophyll cucumber plants grown in pasture soils treated with herbicide mimics auxinas

Todos os textos, informa??es e resultados apresentados s?o de inteira responsabilidade dos autores.Parte da disserta??o do primeiro autor, financiado pelo Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico (CNPq), Funda??o de Amparo ? Pesquisa do Estado de Minas Gerais (FAPEMIG), Coordenac?o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES).O projeto tem como coordenador e orientador, o segundo autor.Este trabalho foi proposto com o objetivo de avaliar o efeito residual dos herbicidas triclopyr, 2,4-D e a mistura 2,4-D + picloram no teor de clorofila total de plantas de pepino. O experimento foi dividido em duas etapas. A primeira parte foi conduzida em uma ?rea de pastagem infestada por plantas daninhas pertencente ? UFVJM, em Couto de Magalh?es de Minas MG. A segunda etapa foi realizada em casa de vegeta??o no Campus JK da UFVJM, em Diamantina MG. O delineamento experimental adotado foi inteiramente ao acaso, com quatro repeti??es. Os tratamentos foram tr?s herbicidas: triclopyr (960 g ha-1 do equivalente ?cido triclopyr); 2,4-D (1340 g ha-1 do equivalente ?cido 2,4-D) e a mistura 2,4-D + picloram (720 + 192 g ha-1 do equivalente ?cido 2,4-D + picloram) aplicados na dose recomendada pelos fabricantes, mais testemunha sem aplica??o. Foi utilizado o pepino (Cucumis sativus) como esp?cie indicadora. Aos 40 dias ap?s a aplica??o (DAA) foram coletados aleatoriamente, em cada parcela, amostras de solo na profundidade de 0 a 20 cm, para condu??o da segunda etapa do experimento em casa de vegeta??o. Aos 20, 27, 34 e 40 dias ap?s a semeadura (DAS), foram determinados os teores de clorofila total. N?o foi observada diferen?a entre os tratamentos nas avalia??es realizadas aos 20 DAS. Entretanto, houve a morte das plantas de pepino nos solos tratados com 2,4-D + picloram a partir dos 27 DAS. Aos 40 DAS os solos tratados com os herbicidas triclopyr e 2,4-D n?o apresentaram redu??o da clorofila total em rela??o as testemunhas, sem herbicida. A mistura de herbicidas 2,4-D + picloram apresentou grande efeito residual sobre os solos cultivados com pepino, levando as plantas a morte. Os demais herbicidas, 2,4-D e triclopyr apresentaram baixo efeito nos teores de clorofila das plantas indicadoras, demonstrando apresentar menor res?duo no solo.This study was proposed aiming to evaluate the residual effect of the herbicides triclopyr, 2,4-D and the mix of 2,4-D + picloram on the total chlorophyll content of cucumbers plants. The experiment was divided in two parts. The first part was conducted on a pasture area infested by weeds that belongs to the UFVJM, in Couto de Magalh?es de Minas MG. The second part was concluded on the greenhouse in the Campus JK of the UFVJM, in Diamantina MG. The experimental design used was the completely randomized, with four repetitions. The treatments were three herbicides: : triclopyr (960 g ha-1 of the acid equivalent triclopyr); 2,4-D (1340 g ha-1 of the acid equivalent 2,4-D) and the mix 2,4-D + picloram (720 + 192 g ha-1 of the acid equivalent 2,4-D + picloram) applied on the recommended dose by the manufacturer, one more without herbicide application. The specie indicator was the cucumber (Cucumbis sativus). 40 days after the application (DAA) were randomly collected, in each portion, soil samples on the width of 0 to 20 cm, to conduce the second part of the experiment on the greenhouse. 20, 27, 34 and 40 days after sowing (DAS), were determined the total chlorophyll content. It was not observed differences between the treatments on the evaluation made at 20 DAS. Nonetheless, the cucumbers planted on soil treated with 2,4-D + picloram died after 27 DAS. At 40 DAS the soils treated with the herbicides triclopyr and 2,4-D did not show reduction of the total chlorophyll content in relation to the plants not treated with herbicides. The mix of herbicides 2,4-D + picloram presented a huge residual effect on the soil cultivated with cucumber, inducing them to death. The others herbicides, 2,4-D and triclopyl has presented low effect on the chlorophyll content of the indicators plants, showing present lower residue on the soil