OALib Journal期刊

ISSN: 2333-9721

費用:99美元

投稿

匹配條件: “Denizart Bolonhezi” ,找到相關結果約17條。
列表顯示的所有文章,均可免費獲取
第1頁/共17條
每頁顯示
Sistemas conservacionistas de manejo do solo para amendoim cultivado em sucess?o à cana crua
Bolonhezi, Denizart;Mutton, Miguel ?ngelo;Martins, Antonio Lúcio Mello;
Pesquisa Agropecuária Brasileira , 2007, DOI: 10.1590/S0100-204X2007000700005
Abstract: field studies were conducted from 2000 to 2005 to evaluate the effects of conservation tillage on agronomic characteristics of two peanut cultivars, cultivated in rotation with sugarcane harvested without burning. tillage systems included reduced tillage, no-tillage, and conventional tillage, which were arranged in a split-plot randomized complete block design with four replications in two different types of soil, oxisol and ultisol, located in ribeir?o preto and pindorama cities, sp, brazil. tillage treatments were main plots while subplots were peanut genotypes (iac-tatu st and iac-caiapó). results of seven experiments showed no statistic difference on pod yield, kernel yield, number of pods and pegs, between the conservation tillage systems and the conventional tillage, but a decrease on stand of plants can occur. three out of seven experiments showed a significant interaction between the cultivar and tillage system. the response of different tillage systems for cv. iac-caiapó was lower than for cv. iac-tatu st. no-tillage system can show increase (between 6.5 and 9%) on mature kernel rate as well as good or better soil moisture during a dry period.
Fumonisins in corn cultivars in the state of S?o Paulo
Camargos, Simone M.;Soares, Lucia M. Valente;Sawazaki, Eduardo;Bolonhezi, Denizart;Castro, Jairo L.;Bortolleto, Nelson;
Brazilian Journal of Microbiology , 2000, DOI: 10.1590/S1517-83822000000300015
Abstract: twenty three samples, belonging to 19 corn cultivars with distinct types of germoplasms, endosperm and length of vegetative cycle, were analyzed for fumonisins b1 and b2. the cultivars were grown in experimental fields in three locations (votuporanga, ribeir?o preto and cap?o bonito) within the state of s?o paulo, brazil, during the 97/98 crop. all samples were contaminated with fumonisins with concentrations ranging from 1.63 μg/g to 25.69 μg/g with an average of 5.61 μg/g for fb1 and from 0.38 μg/g to 8.60 μg/g with an average of 1.86 μg/g for fb2. in terms of fumonisins, these high levels put the corn cultivated in s?o paulo among the most contaminated in the world reported to date.
Phytosociology of weeds under different soil management systems in field reform of raw sugarcane. = Fitossociologia de plantas daninhas sob diferentes sistemas de manejo de solo em áreas de reforma de cana crua.
Maria Beatriz Bernardes Soares,Everton Luis Finoto,Denizart Bolonhezi,Willians Cesar Carrega
Agro@mbiente On-line , 2011,
Abstract: The aim of this study was the phytosociological survey of weeds in areas of reform of raw cane, kept fallow after the use of three soil management systems in two regions of S o Paulo. The study was conducted during 2007/08 crop year, in commercial production in the municipalities of Novais and Guaira. The last harvest of sugarcane was done in the first fortnight of July 2007. We used randomized block design, the treatments consisted of three soil tillage systems: conventional tillage, minimum tillage and no tillage. After treatments of tillage plots were maintained in a fallow period of 150 days. We carried out sampling in each plot by doing the identification, counting and collecting all the shoots of the weeds present. The data were interpreted statistically by ANOVA and Tukey’s test, then calculated the phytosociological index. No-tillage gave lower dry matter and fewer weeds than the other soil management systems in two growing regions. The Guaira region had a higher weed infestation that the region of Novais, where the species that stood out, presenting high IVR in all types of management was the Cyperus rotundus L. The importance of this species decreased with the use of more conservation managements. The similarity between tillage and conventional tillage was lower in both regions.
Weeds in raw sugar cane renovation area with different systems of management on soil and green manure succession = Plantas daninhas em área de reforma de cana crua com diferentes manejos do solo e adubos verdes em sucess o
Maria Beatriz Bernardes Soares,Everton Luis Finoto,Denizart Bolonhezi,Willians Cesar Carrega
Agro@mbiente On-line , 2012,
Abstract: The renewal of plantations is important to maintain high agricultural productivity of the culture of sugar cane and is performed after 5 cuts. In order to compare the residual effects of crop succession in different planting systems on the spontaneous occurrence of weeds in the area of reform of sugarcane, the experiment was done on Acrisol eutrophic soil, located in the city of Novais, S o Paulo, in sugar cane harvested without prior burning in the last five cuts. The randomized block design with treatments arranged in split plot and arranged in four replications was used. The main treatments consisted of three cropping systems, conventional tillage, minimum tillage, and no tillage. Secondary treatments consisted of two choices of green manure (sunnhemp and velvet bean) and a fallow plot. After 180 days of harvest of sugar cane was counted the number of weeds.m-2 and determined the dry mass of shoots, calculating their phytosociological index. Among the management systems of soil, the no tillage system showed a suppressive effect of weeds, resulting in fewer plants, less dry mass of plants and less variety of species, suppressing species that are considered important in the culture of sugar cane. The minimum tillage method revealed intermediate results and conventional tillage was most affected by weeds. Among the green manure planted in succession to sugar cane, the velvet bean is highlighted, and shows suppressive effect of the most important weeds in fields planted with conventional soil tillage. = A renova o dos canaviais é importante para manter elevada a produtividade agrícola da cultura e é realizada em média após cinco cortes, com o objetivo de comparar o efeito residual das culturas de sucess o nos diferentes sistemas plantio sobre a ocorrência espontanea de plantas daninhas em área de reforma de cana crua, instalou-se o experimento sobre ARGISSOLO VERMELHO-AMARELO Eutroférrico, localizado no município de Novais-SP, em canavial colhido sem queima prévia nos últimos cinco cortes. Utilizou-se delineamento experimental blocos casualizados, com os tratamentos arranjados em parcelas sub-divididas, com quatro repeti es. Os tratamentos principais consistiram dos três sistemas de cultivo; convencional, cultivo mínimo e plantio direto. Os tratamentos secundários foram constituídos de duas op es de adubos verdes (crotalária e mucuna) e uma parcela em pousio. Após 180 dias da colheita da cana-de-a úcar contou-se o número de plantas daninhas m-2e determinou-se a massa seca da parte aérea, calculando seus índices fitossociológicos. Dentre os sistemas de
Fumonisins in corn cultivars in the state of S o Paulo
Camargos Simone M.,Soares Lucia M. Valente,Sawazaki Eduardo,Bolonhezi Denizart
Brazilian Journal of Microbiology , 2000,
Abstract: Twenty three samples, belonging to 19 corn cultivars with distinct types of germoplasms, endosperm and length of vegetative cycle, were analyzed for fumonisins B1 and B2. The cultivars were grown in experimental fields in three locations (Votuporanga, Ribeir o Preto and Cap o Bonito) within the State of S o Paulo, Brazil, during the 97/98 crop. All samples were contaminated with fumonisins with concentrations ranging from 1.63 μg/g to 25.69 μg/g with an average of 5.61 μg/g for FB1 and from 0.38 μg/g to 8.60 μg/g with an average of 1.86 μg/g for FB2. In terms of fumonisins, these high levels put the corn cultivated in S o Paulo among the most contaminated in the world reported to date.
Modos de aplica??o de regulador vegetal no algodoeiro, cultivar IAC-22, em diferentes densidades populacionais e níveis de nitrogênio em cobertura
Furlani Junior, Enes;Silva, Nelson Machado da;Carvalho, Luiz Henrique;Bortoletto, Nelson;Sabino, José Carlos;Bolonhezi, Denizart;
Bragantia , 2003, DOI: 10.1590/S0006-87052003000200007
Abstract: the present work was developed during the growing seasons of 1996/97, 1997/98, 1998/99 and 1999/00 at ribeir?o preto, tietê, guaíra, campinas and ilha solteira, state of s?o paulo, brazil. the experimental design was the completely casualized blocks, using the factorial arrangement with twelve treatments (3 x 2 x 2) and four replications. the objective of this work was to study plant density (6; 10 and 14 plants/m); nitrogen levels at broadcasting (40 and 60 kg.ha-1 of n/ha) and types of growth regulator application (single application at flowering or splitting in four times, since the thinning). the split application conduced to lower height of plants and greater weight of bolls when compared to the single application of the growth regulator. the application of the highest level of n, increased the leaves nitrogen content in and cotton yield, and reduced the lint percentage. increasing plant density from 6 to 10 and 14 plants/m, reduced lint porcentage and bolls weight.
Melhoramento da cana-de-a?úcar: X. Ensaio de clones provenientes de hibrida??es realizadas em 1981 e selecionados na regi?o de Jaú (SP)
Campana, Mário Percio;Silva, Marcelo de Almeida;Alvarez, Raphael;Landell, Marcos Guimar?es de Andrade;Figueiredo, Pery;Bolonhezi, Denizart;
Bragantia , 1995, DOI: 10.1590/S0006-87051995000200008
Abstract: seven sugarcane clones obtained from crosses made in 1981 in camamu, state of bahia, were evaluated in a trial in jaú region. in the trial, started in february, 1988, it was used a randomized complete block design with six replications. statistical analysis for cane and sugar yield (t/ha) and sugar content (pol% cane) were performed with five harvest means. it was presented evaluation data of number of stalks, fibre% cane and flowering intensity. according to these characteristics studied comparatively to five varieties used as control, iac67-112, na56-79, sp70-1143, sp71-1406 and po77-102, the clones iac81-3041 and iac81-3049 showed be promising and in condition to be included in varietal management studies for others regions of the state of s?o paulo, brazil.
Melhoramento da cana-de-a?úcar: XI. Ensaios de clones provenientes de hibrida??es realizadas em 1982 e selecionados na regi?o de Jaú (SP)
Campana, Mário Percio;Alvarez, Raphael;Silva, Marcelo de Almeida;Landell, Marcos Guimar?es de Andrade;Zimback, Léo;Figueiredo, Pery;Silvarolla, Maria Bernadete;Bolonhezi, Denizart;
Bragantia , 1996, DOI: 10.1590/S0006-87051996000200006
Abstract: sugarcane clones obtained from crosses made in 1982 in camamu, state of bahia, were evaluated in a trial carried out in a "terra roxa estruturada" at da barra mill, barra bonita, state of s?o paulo. the trial started in january, 1987, using a randomized complete block design with four replications. statistical analysis for cane and sugar yield (t/ha) and sugar content (pol % cane), were performed with four harvest means. data or number and weight of stalks, flowering intensity and fibre % cane, are presented in comparison with four control varieties: cb47-355, iac67-112, na56-79 and sp71-1406. the clones iac82-3092 and iac82-3258 showed promising results and in condition to be included in the varietal management studies for the state of s?o paulo. selection made on second harvest or two first harvests mean showed the best results.
Estudo comparativo de métodos para a determina??o da concentra??o de carbono em solos com altos teores de Fe (Latossolos)
Segnini, Aline;Santos, Larissa Macedo dos;Silva, Wilson Tadeu Lopes da;Martin-Neto, Ladislau;Borato, Carlos Eduardo;Melo, Wanderley José de;Bolonhezi, Denizart;
Química Nova , 2008, DOI: 10.1590/S0100-40422008000100020
Abstract: soil organic matter (som) plays an important role in physical, chemical and biological properties of soil. therefore, the amount of som is important for soil management for sustainable agriculture. the objective of this work was to evaluate the amount of som in oxisols by different methods and compare them, using principal component analysis, regarding their limitations. the methods used in this work were walkley-black, elemental analysis, total organic carbon (toc) and thermogravimetry. according to our results, toc and elemental analysis were the most satisfactory methods for carbon quantification, due to their better accuracy and reproducibility.
Comportamento de genótipos de algodoeiro no Estado de S?o Paulo: produtividade, resistência a doen?as e qualidade da fibra
Cia, Edivaldo;Fuzatto, Milton Geraldo;Kondo, Júlio Isao;Sabino, Nelson Paulieri;Galbieri, Rafael;Lüders, Reginaldo Roberto;Carvalho, Luiz Henrique;Ito, Margarida Fumiko;Erismann, Norma de Magalh?es;Chiavegato, Ederaldo José;Bolonhezi, Denizart;Foltran, Dulcineia Elizabete;Kasai, Francisco Seiiti;Bortoletto, Nelson;Gallo, Paulo Boller;Recco, Paulo César;Rossetto, Raffaela;
Ciência Rural , 2008, DOI: 10.1590/S0103-84782008000200005
Abstract: in the 2001/02 growing season 16 field experiments were conducted in the main cotton producing regions of the state of s?o paulo to evaluate the performance of 12 cotton genotypes for yield, fiber quality and resistance to six diseases of the crop. a randomized complete block design with four replications, which were represented by two five-meter-long rows now used. substantial differences between genotypes were observed for both cotton seed and fiber. although outstanding in some genotypes, the fiber percentage was not a determining factor of fiber yield per area. among the 12 genotypes studied, only 'cnpa ita 90' and 'brs ipê' presented good index of resistance to the ramularia. on the other hand, 'iac 24' presented good index for fusarium, nematodes and ramulose, the three more destructible diseases.most of the evalueted cultivars and lines were susceptible to one or more diseases; none of them showed multiple resistance to all diseases.
第1頁/共17條
每頁顯示


Home
Copyright ? 2008-2017 Open Access Library. All rights reserved.

久草在现在线中文字幕