Impacts of the nitrogen application on productivity and nutrients concentrations of the corn-Congo grass intercropping system in the dry season     

Karina Batista  Alessandra Aparecida Giacomini  Luciana Gerdes  Waldssimiler Teixeira De Mattos  Ivani Pozar Otsuk 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2013,63(7):567-577

ABSTRACT

The corn-grass intercropping system began to be used in the dry season, as it provides increased straw production for the no-tillage system. However, corn and grass are plants demanding in nitrogen. The corn cultivated in the dry season is called out-of-season corn in Brazil. The objective of this study was to evaluate the productivity and nutrients concentrations of out-of-season corn and Congo-grass intercropped in the no-tillage system, as a function of the nitrogen rates applied in sidedressing. The treatments were four nitrogen rates, 0, 30, 60 and 90?kg?ha^?1. The experimental design was randomised complete blocks with four replicates. The experimental period corresponded to the harvests of 2015 and 2016. There were evaluated: corn grain yield, dry mass production and nutrient concentration in the shoots of the plants intercropped. The evaluations were carried out at the physiological maturity stage of the corn and at the time of desiccation of the grass. Nitrogen increased grain yield and dry mass production of the plants intercropped. Nitrogen maximised the magnesium concentration in out-of-season corn and the nitrogen, calcium, magnesium and sulphur concentrations in Congo grass. Excess nitrogen promoted reduction of the phosphorus in the Corn-Congo grass intercropping system in the dry season.  相似文献   

Nanoparticles in the management of brown eye spot in coffee     

Carvalho  Camila Aparecida  Pozza  Edson Amp&#;lio  de Souza  Paulo Estev&#;o  Pozza  Ad&#;lia Aziz Alexandre  de Resende  M&#;rio L&#;cio Vilela  Porto  Ant&#;nio Carlos Mota  Balieiro  Andr&#; Augusto Ferreira  Perez  Cristian David Plaza  dos Santos Botelho  Deila Magna 《European journal of plant pathology / European Foundation for Plant Pathology》2022,163(3):767-774

European Journal of Plant Pathology - Brown eye spot (Cercospora coffeicola) is one of the main diseases of coffee (Coffea arabica L.) and represents a serious phytosanitary problem for the crop....  相似文献   

Inhibition of anthracnose symptoms in common bean by treatment of seeds with essential oils of Ocimum gratissimum and Syzygium aromaticum and eugenol     

Silva  Adriene Aparecida  Pereira  Fernanda Aparecida Castro  de Souza  Elaine Aparecida  de Oliveira  Denilson Ferreira  Nobre  Danúbia Aparecida Costa  Macedo  Willian Rodrigues  Silva  Geraldo Humberto 《European journal of plant pathology / European Foundation for Plant Pathology》2022,163(4):865-874

European Journal of Plant Pathology - Essential oils (EOs) of Ocimum gratissimum and Syzygium aromaticum and eugenol were applied to common bean seeds harvested from plants with anthracnose...  相似文献   

Title: priority areas for genetic conservation of Eremanthus erythropappus (DC.) MacLeish in Brazil     

de Pádua  Joelma Aparecida Rabelo  Rocha  Lucas Fernandes  Brandão  Murilo Malveira  de Almeida Vieira  Fábio  de Carvalho  Dulcinéia 《Genetic Resources and Crop Evolution》2021,68(6):2483-2494

Genetic Resources and Crop Evolution - Eremanthus erythropappus (DC.) MacLeish, commonly known as candeia, is a threatened tree species that occurs in Seasonal Semideciduous Forests in Brazil. The...  相似文献   

Effect of imidocarb and levamisole on the experimental infection of BALB/c mice by Leishmania (Leishmania) amazonensis   总被引：1，自引：0，他引：1  

Rodrigues FH  Afonso-Cardoso SR  Gomes MA  Beletti ME  Rocha A  Guimarães AH  Candeloro I  de Souza MA 《Veterinary parasitology》2006,139(1-3):37-46

The adverse effects from using currently available drugs for the treatment of leishmaniasis have motivated the search for new therapeutical agents. The aim of this work was to evaluate the effect of imidocarb and levamisole on the treatment of BALB/c mice experimentally infected by Leishmania (Leishmania) amazonensis. BALB/c mice were infected with 10(6) promastigotes of L. (L.) amazonensis (IFLA/BR/67/PH8) and, starting on day 51, mice were treated subcutaneously with imidocarb (IMD, 34 mg/kg), imidocarb plus levamisole (IMD+LVS, 34 and 12 mg/kg, respectively), only levamisole (LVS, 12 mg/kg) or without treatment (control). Lesion size and swelling were weekly monitored for 10 weeks after the beginning of the treatment. On day 121 post-infection, serum levels of specific IgG from infected mice were evaluated, as well as histopathological and morphometric alterations in the footpad, lymph nodes and spleen of these animals. The data obtained in this study demonstrated that, when compared to controls, mice treated with IMD had lower levels of IgG anti-L. (L.) amazonensis (34.45%), smaller vacuolar area in macrophages (3.75%), lower number of megakaryocytes in spleen (63.19%) and lower parasite burden in the footpad (30.2%). Thus, the evaluated parameters suggest the use of imidocarb as a potential drug in the treatment of tegumentary leishmaniasis.  相似文献   

Antinociceptive activity of the pyranocoumarin seselin in mice   总被引：1，自引：0，他引：1  

Lima V  Silva CB  Mafezoli J  Bezerra MM  Moraes MO  Mourão GS  Silva JN  Oliveira MC 《Fitoterapia》2006,77(7-8):574-578

Seselin an angular pyranocoumarin at dose of 0.5, 4.5 or 40.5 mg/kg inhibited the writhing response induced by acetic acid in a significant and dose-dependent manner, by 19.5%, 26.2% and 41.4%, respectively. Using the same doses, seselin elicited a significant inhibition of formalin response during the second phase (inflammatory), by 90.3%, 97.8% and 95.3%, respectively. Besides, a significant reduction of licking time was observed during the first phase (neurogenic) at the highest doses of seselin, by 34.4% and 66.9%, respectively. On the contrary, in the hot plate test no effect was observed after seselin treatment. In conclusion, seselin was able to inhibit inflammatory hyperalgesia, suggesting that this natural product possesses both important peripheral anti-inflammatory and antinociceptive properties.  相似文献   

Genotype-environment interaction in Cordia trichotoma (Vell.)Arráb.Ex Steud.progenies in two different soil conditions     

Wanderley dos Santos  Bruno Marchetti de Souza  Daniele Fernanda Zulian  Gilberto Terra Ribeiro Alves  Jo 《林业研究》2022,33(1):309-319

Investment in silvicultural techniques is notice-ably lacking,especially in breeding programs for non-con-ventional wood species.Studying genotype × environment interaction (G × E) is essential to the development of breed-ing programs.Thus,this study aimed to estimate genetic diversity of and the effects of G × E interaction on two prog-eny tests of Cordia trichotoma,including the estimation of genetic gain and genetic diversity after selection.For the experiment,30 progenies of C.trichotoma were tested at two sites with differing soil textures.Diameter at breast height (1.30 m above soil surface,dbh-cm),total height,diameter at 30 cm from the soil,first branch height,and survival were all monitored for four years.Statistical devi-ance,best linear unbiased estimator,and harmonic mean of relative performance of genetic values (MHPRVG) were all calculated to predict breeding values,estimate genetic parameters,and analyze deviance.All quantified traits varied significantly among progenies by soil type,with greatest variation recorded for genetic variability.Heritability of the progenies led to predictions of genetic gain,ranging from 7.73 to 15.45％,for dbh at four years of age.The calculated decrease in genetic diversity after selection showed that this parameter should be monitored in subsequent breed-ing cycles.G × E was low for all tests.The best-performing progenies proved most stable and best adapted to the differ-ent environmental conditions tested.  相似文献   

First report and molecular characterization of Trypanosoma vivax in cattle from state of Pernambuco, Brazil     

Pimentel Dde S  Ramos CA  Ramos RA  de Araújo FR  Borba ML  Faustino MA  Alves LC 《Veterinary parasitology》2012,185(2-4):286-289

This paper describes an outbreak of Trypanosoma vivax for the first time in the state of Pernambuco, Brazil, affecting dairy cattle in the municipality of Itambé in the northern coastal zone of the state. Clinical signs compatible with infection by blood protozoa and epidemic miscarriages were observed. The diagnosis of T. vivax was confirmed through biometric microscopy and molecular analysis with PCR and DNA sequencing. The T. vivax isolate detected in the present study proved to be genetically very close to other Brazilian isolates of the protozoan despite being geographically distant.  相似文献   

Notes on the gross anatomy of the heart of the broad-snouted caiman,Caiman latirostris (Daudin, 1802)     

Mariana de Oliveira Lima  Yhuri Cardoso Nóbrega  Marcelo Renan de Deus Santos  Louisiane de Carvalho Nunes  Rodrigo Giesta Figueiredo  Maria Aparecida da Silva 《Anatomia, histologia, embryologia》2021,50(2):350-359

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Buriti pulp oil did not improve high-fat diet-induced metabolic disorders in c57bl/6 mice     

Leonardo Recena Aydos  Luane Aparecida do Amaral  Ana Cristina Jacobowski  Roberta Serafim de Souza  Eduardo Benedetti Parisotto  Mariana Biava de Menezes  Felipe Francisco Bittencourt Junior  Emely Schuindt Fernandes  Iandara Schettert Silva  Luciane Candeloro Portugal  Cláudio Gonçalves Oliveira  Gustavo Tsuyoshi Senra Masuko  Leandro Fontoura Cavalheiro  Carlos Eduardo Domingues Nazário  Elisvânia Freitas dos Santos  Maria Lígia Rodrigues Macedo 《Journal of animal physiology and animal nutrition》2021,105(2):364-375

Metabolic syndrome (MetS) and obesity are growing in many parts of the world, becoming public health problems. It is proposed that foods with functional properties can assist in the treatment of these diseases. Crude buriti pulp oil (BPO) is a food traditionally consumed by residents in the Pantanal, Cerrado and Brazilian Amazon. It is rich in oleic acid, tocopherols and carotenoids, emerging as a potential functional food. Thus, this study aimed to evaluate the effect of the supplementation of BPO on metabolic disorders caused by a high-fat diet. Four groups of C57BL6 mice were used, a lean group with AIN-93M diet and control oil supplementation, an obese group with a high-fat diet and control oil supplementation, and two obese groups with a high-fat diet and BPO supplementation in the amounts of 50 and 100 mg/kg. BPO worsened the metabolic state caused by the high-fat diet, worsening risk factors associated with MetS, as the abdominal circumference and retroperitoneal fat, serum levels of total cholesterol, uric acid, alanine transaminase, glucose and triglycerides, and renal fat, in addition to changes in glycaemic control and oxidative stress markers. C57BL/6 mice fed with a high-fat diet and supplemented with BPO presented a worsening in metabolic risk factors associated with MetS.  相似文献