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| Registros recuperados: 51 | |
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| Carlos Marcelo, Rufina. |
| El chile manzano (Capsicum pubescens R. y P.) es originario de Perú y Bolivia, fue introducido a México a principios del siglo XX. Este tipo de chile se produce a altitudes de 1700 a 2500 m. En La Sierra Norte de Puebla la producción de este cultivo se hace a nivel de traspatio, con manejo insuficiente de fertilización y control de plagas. Como parte de una propuesta para mejorar el manejo de este cultivo, y hacer uso de los recursos disponibles en la región, que también se dedica a la ganadería para producción de leche, se compararon dos sistemas de producción, uno con fertilización orgánica y otro con fertilización química, en rendimiento y la calidad del fruto de chile. En el sistema con fertilización química la dosis 200-100-200 (NPK), se fracciono en... |
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Palavras-chave: Capsicum pubescens; Fertilización orgánica; Indice de cosecha; Diámetro; °Brix; Organic fertilization; Harvest index; Diameter; Edafología; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/772 |
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| KUMMER,ANA C. B.; GRASSI FILHO,HELIO; LOBO,THOMAZ F.; LIMA,RODOLLPHO A. DE S.. |
| ABSTRACT Several research lines are required to ensure a proper disposal of sewage sludge in Brazil; among them, we may highlight agricultural use. In this sense, this study aimed at assessing the effect of exchanging nitrogen sourcing via conventional fertilization (chemical) with growing doses of composted sewage sludge (CSS) on wheat crop performance. The experiment was performed in a completely randomized design with seven treatments and ten replications, being defined as T0 (control – without fertilization); T1 (100% mineral fertilization); T2 (50% mineral + 50% CSS); T3, T4, T5, and T6 (100, 150, 200, and 250% nitrogen fertilizing from CSS). Results showed that the use of CSS increased wheat production and development, therefore enhancing its... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nitrogen; Organic fertilization; Production; Triticum aestivum. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000400706 |
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| Magalhães,Adriana G.; Rolim,Mario M.; Duarte,Anamaria S.; Pedrosa,Elvira M. R.; Silva,Enio F. de F. e. |
| The aim of this study was to evaluate chemical attributes alterations of a clay-loam textured soil and dry mass accumulation of maize submitted to application of cassava wastewater doses in three assessment periods. The experiment was conducted under greenhouse using a completely randomized experimental design in a factorial 5 × 3, with four replicates. The analyzed factors of research were doses of cassava wastewater (0; 12.6; 25.2; 50.4; 75.6 m3 ha-1) andassessment periods (20, 40 and 52 days after germination). The following parameters were determined: electric conductivity of soil saturation extract, pH in water, content of available P, content of exchangeable K+, Ca2+, Mg2+ and Na+ of soil, dry mass of leaves and stem. The application of cassava... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Residue; Starch; Nutrients; Organic fertilization; Zea mays. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162015000300458 |
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| Cardoso,Paulo H. S.; Sousa,Izabelle de P.; Junio,Geraldo R. Zuba; Gonçalves,Paula W. B.; Sampaio,Regynaldo A.. |
| ABSTRACT This study aimed to evaluate the total contents of As, Cu and Zn in the profile of a Haplic Cambisol cultivated with crambe and corn and fertilized with sanitary sewage sludge and to compare them with those obtained in other forms of fertilization, as well as the content of metals in the grain of these crops. Two experiments were carried out in the field, one with maize cultivation and another with crambe, both were delineated as randomized blocks with four treatments and six replicates, which were: without fertilization, fertilization with sewage sludge dewatered and dried in the sun, with dry sewage sludge and with mineral fertilizers. At the end of the experiments soil samples were collected at 15, 50, 100, 150 and 200 cm depth for analysis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biosolid; Crambe abyssinica; Organic fertilization; Zea mays. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300426 |
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| Oliveira,Ademar P; Santos,João F; Cavalcante,Lourival F; Pereira,Walter E; Santos,Maria do Carmo CA; Oliveira,Arnaldo Nonato P; Silva,Natália V. |
| In Northeastern Brazil, the sweet potato is cultivated in small farms, in a family farming systems, constituting themselves an alternative way for the generation of food, employment and income. This study aimed to assess the effect of cattle manure levels and biofertilizer concentrations on the sweet potato cultivar White Queen productivity. The experiment was carried out from March to September 2007 at the EMEPA Experimental Station in Lagoa Seca, Brazil. The experimental design was randomized blocks, in split split plot 6 x 4 x 2 + 1 scheme, with four replications. The plots consisted of cattle manure levels (0, 10, 20, 30, 40 and 50 t ha-1), the subplot of biofertilizer concentrations (0, 15, 30 and 45%) and the sub subplots consisted of methods of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ipomoea batatas; Organic fertilization; Productivity. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362010000300006 |
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| Oliveira,Arnaldo Nonato P de; Oliveira,Ademar P de; Leonardo,Francisco de Assis P; Cruz,Iordam da S; Silva,Damiana F da. |
| Considering the importance of gherkin in Northeastern Brazil, studies focusing on increasing its quality and yield are powerful tools to improve people social and economical condition in this region. The effects of doses of bovine manure were evaluated in gherkin yield in an experiment using cultivar Nordestino, from May to September 2006, at the Federal University of Paraíba, in Areia County, Paraíba State, Brazil. The experimental design was randomized complete blocks, with five treatments (0; 10; 20; 30, and 40 t ha-1) of bovine manure, in four replications. The working area in each experimental plot corresponded to 80 m², including 20 plants, with 2.0 x 2.0 m spaces. The highest number of fruits per plant (30) was achieved with 32.2 t ha-1 of bovine... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cucumis anguria L.; Organic fertilization; Yield. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000100020 |
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| Silva,Paulo Sérgio L e; Silva,Jaeveson da; Oliveira,Fábio Henrique T de; Sousa,Ana Karenina F de; Duda,Gustavo P. |
| The present concern about environmental degradation has produced a renewed interest in organic fertilizers, such as animal manures. In addition, the soil organic matter conservation is one of the most important limiting factors for sustainability development in semiarid regions. In a previous experiment, carried out to evaluate the direct effects of application of manure rates in corn, positive effects of this fertilization were observed on green ear yield and grain yield. It was also verified that manure increased water retention and availability, and phosphorus, potassium, and sodium contents in the soil layer from 0-20 cm, but did not influence pH, calcium, organic matter contents and the sum of bases. The objective of this work was to evaluate the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Organic fertilization; Cultivars. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362006000200008 |
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| Zuba,SN; Nogueira,WCL; Fernandes,LA; Sampaio,RA; Costa,CA. |
| The effect of alternative sources of nutrients was evaluated on yield, nutrition and fruit quality of tomato cv Santa Clara in an agro ecological system, under natural conditions in Montes Claros, Minas Gerais State, Brazil. The experimental design was of completely randomized blocks with seven treatments and four replications, using eight plants per experimental plot. The treatments comprised of 1) conventional fertilization with NPK; 2) organic compost + natural phosphate + rock dust, applied separately; 3) organic compost produced from the addition of natural phosphate and rock dust + green manure; 4) organic compost produced from the addition of rock dust + natural phosphate + green manure; 5) organic compost produced from the addition of natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lycopersicon esculentum; Organic fertilization; Mineral nutrition. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000100009 |
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| Alves,Adriana U; Oliveira,Ademar P de; Alves,Anarlete U; Dornelas,Carina SM; Alves,Edna U; Cardoso,Edson A; Oliveira,Arnaldo Nonato P de; Cruz,Iordan da S. |
| Lima beans (Phaseolus lunatus L.) are alternative food and income sources for the population of Northeastern Brazil. In this region, lima beans are consumed either as green or dry grains. However, low yields have been observed, a challenge that could be overcome by adequate organic and mineral fertilization. This work intended to assess lima beans yield, cultivar Raio de Sol, as affected by doses of cattle manure in the presence and absence of mineral NPK fertilization. The experiment was carried out at the Federal University of Paraíba, Brazil, from September, 2004 to May, 2005. The experimental design was of randomized blocks, with four replications, 40-plant plots, spaces of 1.00 x 0.50 between and within rows, respectively. Treatments were displayed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus lunatus L.; Organic fertilization; Mineral fertilization; Yield. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362008000200024 |
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| Cardoso,Marinice O; Oliveira,Ademar P de; Pereira,Walter E; Souza,Adailson P de. |
| The stem growth, nutrition, and fruit yield of eggplant grown with different doses of cattle manure (CM) and magnesium thermophosphate (MT) were studied, according to the Central Composite Matrix of Box (8.3-518; 8.3-3,018; 48.3-518; 48.3-3,018; 0.0-1,768; 56.6-1,768; 28.3-0.0; 28.3-3,536; 28.3-1,768). Potassium sulfate (KS) was also used (24 g plant-1), as well as a cow urine (COU) solution (10 L 100 L-1 H2O, 500 mL plant-1), applied five times in topdressing. Two additional treatments were used: MT without COU and triple superphosphate + urea (TS plus Ur), both with nutrient levels (CM, P2O5, and KS) corresponding to the combination 28.3-1,768. The experimental design was blocks at random, with three replications. CM doses improved plant height (PH)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum melongena; Organic fertilization; Alternative fertilization management; Unconventional fertilization. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362009000300008 |
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| Rickli de Souza, Louíse; Bandeira Peres, Fabiana Schmidt. |
| The production of forest seedlings in quantity and quality is one of the most important stages for more uniform and productive forest stands establishment. A higher survival and development of seedlings after planting are dependent, among other factors, of their good nutritional status. This study aimed to evaluate the potential use of two bio-fertilizers based on amino acids as initial growth promoters of Eucalyptus dunnii Maiden seedlings, known respectively as “BIO 1” and “BIO 2” .The experiment was conducted in a commercial nursery in Imbituva, Parana State, Brazil. It was used a completely randomized design, with three treatments and four replications, with 50 seedlings per replication. The variables evaluated were: plant height, stem diameter, fresh... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Eucalyptus; Organic fertilization; Forest nursery Eucalipto; Fertilização orgânica; Viveiro florestal. |
| Ano: 2016 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1127 |
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| Schmidt,Fabiana; Knoblauch,Ronaldir. |
| Abstract: The objective of this work was to evaluate changes in the soil chemical properties, nitrogen use efficiency, and grain yield of flood-irrigated rice fields after the addition of poultry manure during five years. Trials were carried out in a randomized complete block design, with three replicates. The treatments were: chemical fertilizers, N-P2O5-K2O; control, no fertilizers; and poultry manure doses, 2.5, 5.0, and 10.0 Mg ha-1. Poultry manure increased soil pH, base saturation, and phosphorus, potassium, calcium, and zinc contents more than the chemical fertilizers. Adding poultry manure to the soil increased N ammonification (35 mg kg-1 NH4 +-N) from the first to the fourth week after rice was sown. The exclusive use of poultry manure was not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Nutrient availability; Organic fertilization. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000103900 |
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| Kaufmann,Danieli Schneiders; Bertol,Ildegardis; Santos,Maria Aparecida do Nascimento dos; Bagio,Barbara; Mecabô Júnior,José; Borg,Heinz. |
| ABSTRACT: Runoff in agricultural areas with intensive application of pig slurry can transport significant amounts of nutrients. This study evaluates the effects of different pig slurry (PS) application rates (0, 50, 100, and 200 m3 ha-1) on nutrient loss through runoff during soybean cultivation under no-tillage. It was conducted at two sites in southern Brazil, one on an Alfisol (27° 43' south and 50° 3' west) and one on an Inceptisol (27° 47' south and 50° 18' west). The PS was applied to the soil once at the beginning of the soybean cycle. Each plot was 11 m long in the direction of the slope and 3.5 m wide. To induce runoff, artificial rainfall was applied in four different tests (T1, T2, T3, T4), with an intensity of 65 mm h-1 for 90 minutes. The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilization; Artificial rainfall; Nutrient loss. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100502 |
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| Gatiboni,Luciano Colpo; Brunetto,Gustavo; Rheinheimer,Danilo dos Santos; Kaminski,João; Pandolfo,Carla Maria; Veiga,Milton; Flores,Alex Fabiani Claro; Lima,Maria Angélica Silveira; Girotto,Eduardo; Copetti,André Carlos Cruz. |
| Long-standing applications of mineral fertilizers or types of organic wastes such as manure can cause phosphorus (P) accumulation and changes in the accumulated P forms in the soil. The objective of this research was to evaluate the forms of P accumulated in soils treated with mineral fertilizer or different types of manure in a long-term experiment. Soil was sampled from the 0-5 cm layer of plots fertilized with five different nutrient sources for nine years: 1) control without fertilizer; 2) mineral fertilizer at recommended rates for local conditions; 3) 5 t ha-1 year-1 of moist poultry litter; 4) 60 m³ ha-1 year-1 of liquid cattle manure and 5) 40 m³ ha-1 year-1 of liquid swine manure. The 31P-NMR spectra of soil extracts detected the following P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycerophosphate; Manure; Phytate; Organic phosphorus; Organic fertilization. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000300010 |
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| Carmo,Davi Lopes do; Lima,Laís Botelho de; Silva,Carlos Alberto. |
| ABSTRACT The composition of organic waste (OW) and its effect on soil processes may change soil fertility and electrical conductivity (EC). The side effects of waste use in crop fertilization are poorly understood for Brazilian soils. This study examined the effect of the addition of 15 different organic wastes to Oxisols and a Neosol on pH, base saturation, EC, cation exchange capacity (CEC at pH 7), and the availability of Al, macro (P, K, Ca2+, Mg2+ and S) and micronutrients (B, Fe2+, Mn2+, Cu2+ and Zn2+). Soil samples (150 g) were treated with chicken, pig, horse, cattle, and quail manures, sewage sludge 1 and 2, eucalyptus sawdust, plant substrate, coconut fiber, pine bark, coffee husk, peat, limed compost, and biochar. Wastes were added considering a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilization; Manures; Liming value; Micronutrients; Nutrient cycling; Sewage sludge. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100532 |
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| Rocha,Adriano Alvim; Araújo,Ednaldo da Silva; Santos,Silvio da Silva; Goulart,Jhonatan Marins; Espindola,José Antonio Azevedo; Guerra,José Guilherme Marinho; Alves,Bruno José Rodrigues; Rouws,Janaina Ribeiro Costa. |
| ABSTRACT: A reliable quantification of nitrogen (N) losses by ammonia (NH3) volatilization can contribute to identifying optimized strategies of fertilizer management. The objective of this study was to quantify ammonia volatilization from several organic N sources incorporated into or applied onto the soil surface. Two cultivation areas, under snap bean and corn, were evaluated at Embrapa Agrobiology, Seropédica, Rio de Janeiro (RJ). Both experiments used a randomized complete block design in split-plots, with four replications. The main plots consisted of four organic fertilizers (castor bean cake, bokashi, legume fertilizers, cattle manure), at rates of 200 kg ha-1 N, and a control treatment (without fertilization), and the subplots corresponded to the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: NH3 volatilization; Organic fertilization; Nitrogen dynamics. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100518 |
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| Guardini,Renato; Comin,Jucinei José; Santos,Danilo Rheinheimer dos; Gatiboni,Luciano Colpo; Tiecher,Tales; Schmitt,Djalma; Bender,Marcos Antônio; Belli Filho,Paulo; Oliveira,Paulo Amando Victoria de; Brunetto,Gustavo. |
| Successive applications of pig litter to the soil surface can increase the phosphorus (P) content and alter its adsorption, promoting P transfer to surface or subsurface waters. The purpose of this study was to evaluate P accumulation and the pollution potential of a soil after application of pig litter. In March 2010, eight years after the installation of an experiment in Braço do Norte, Santa Catarina, SC, Brazil, on a Typic Hapludult, soil was sampled (layers 0-2.5, 2.5-5, 5-10, 10-15, 15-20 and 20-30 cm) after the following fertilization treatments: no pig litter fertilization, pig slurry application and pig manure application. In this period, 694 and 1,890 kg P2O5 ha-1 were applied in the treatments with pig slurry and pig manure, respectively. The P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilization; Deep litter; Environmental contamination. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000400027 |
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| Lourenzi,Cledimar Rogério; Ceretta,Carlos Alberto; Silva,Leandro Souza da; Girotto,Eduardo; Lorensini,Felipe; Tiecher,Tadeu Luis; De Conti,Lessandro; Trentin,Gustavo; Brunetto,Gustavo. |
| Successive applications of pig slurry to soils under no-tillage can increase the nutrient levels in the uppermost soil layers and part of the nutrients may be transferred to deeper layers. The objective was to evaluate the distribution of nutrients in the profile of a soil after 19 pig slurry applications under no-tillage for 93 months. The experiment was conducted from May 2000 to January 2008 in an experimental area of the Federal University of Santa Maria, southern Brazil, on a Typic Hapludalf. The treatments consisted of pig slurry applications (0, 20, 40 and 80 m³ ha-1) and at the end of the experiment, soil samples were collected (layers 0-2, 2-4, 4-6, 6-8, 8-10, 10-12, 12-14, 14-16, 16-18, 18-20, 20-25, 25-30, 30-35, 35-40, 40-50 and 50-60 cm). The... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilization; Nutrient migration; Environmental contamination. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000100016 |
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| Belem,Aline B.; Oliveira,Ademar P. de; Guimarães,Luciana M.; Chaves,Josyelem T. L.; Bertino,Antonio M. P.. |
| ABSTRACT Onion is the third vegetable crop in economic importance for Brazil, only behind potato and tomato, and responds with increased production to the use of organic and mineral fertilizers. The objective of this study was to evaluate the effect of doses of cattle manure and nitrogen (N) on onion growth and yield. The experimental design used was randomized blocks, in 6 x 2 factorial scheme, corresponding to six doses of cattle manure (0; 10; 20; 30; 40 and 50 t ha-1), in the presence and absence of N, with four repetitions. The variables studied were: shoot fresh and dry masses, total and marketable bulb yields, percentage of bulbs classified and leaf N content. There was an interactive effect (p ≤ 0.05) of cattle manure and N doses on shoot fresh and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allium cepa L.; Organic fertilization; Mineral fertilization. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000300149 |
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| Registros recuperados: 51 | |
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