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| Registros recuperados: 38 | |
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| Zuba Junio,Geraldo R.; Sampaio,Regynaldo A.; Nascimento,Altina L.; Fernandes,Luiz A.; Lima,Natália N. de; Carneiro,João P.. |
| ABSTRACTThis study aimed to evaluate the chemical attributes of an Inceptisol cultivated with castor bean (Ricinus communis L.), variety ‘BRS Energia’, fertilized with sewage sludge compost and calcium (Ca) and magnesium (Mg) silicate. The experiment was conducted at the ICA/UFMG, in a randomized block design, using a 2 x 4 factorial scheme with three replicates, and the treatments consisted of two doses of Ca-Mg silicate (0 and 1 t ha-1) and four doses of sewage sludge compost (0, 23.81, 47.62 and 71.43 t ha-1, on dry basis). Soil organic matter (OM), pH, sum of bases (SB), effective cation exchange capacity (CEC(t)), total cation exchange capacity (CEC(T)), base saturation (V%) and potential acidity (H + Al) were evaluated. There were no significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilizer; Biosolid; Steel waste. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001101107 |
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| Engindeniz,Sait; Tuzel,Yuksel. |
| Health issues and environmental concerns have drawn the attention to organic agriculture aiming to protect the natural balance and to produce without damaging the environment. This study aims determining economic feasibility of organic greenhouse lettuce (Lactuca sativa L.) in an on farm trial, to foster organic greenhouse vegetable production in the preservation area of Tahtali Dam, projected as the sole water resource of Izmir, Turkey's third largest. A 384 m² greenhouse, constructed of galvanized metal tubing anchored and covered with a polyethylene was analyzed to identify typical operation procedures, and to determine unitary construction and operation cost. Organic lettuces were produced during autumn season of 2001-2002, testing different organic... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Vegetable; Organic farming; Organic fertilizer; Cost analysis. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000300012 |
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| Cortez Hernández, Graciano. |
| En la Mixteca Poblana, predominan suelos calcáreos que por su pH alcalino impiden que las plantas puedan absorber los nutrimentos como hierro y zinc, ocasionando la clorosis férrica, afectando los cultivos de esta región, tales como: caña de azúcar, sorgo, maíz, frijol e incluso los árboles frutales, repercutiendo en el desarrollo, rendimiento y en casos severos la muerte de la planta. En esta región está ubicado el ingenio azucarero de Atencingo que genera anualmente 45 mil toneladas de desechos orgánicos (cachaza). El objetivo de esta investigación fue evaluar el efecto de la incorporación de compost de cachaza al suelo en la corrección de clorosis férrica y rendimiento de sorgo. Se incorporó compost de cachaza a razón de cero, cinco y diez t ha-1 en... |
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Palavras-chave: Dosis de fertilización; Compost de cachaza; Deficiencia; Nutrimentos; Fertilización orgánica; Dose of fertilization; Compost; Filter cake; Deficiency; Nutrients; Organic fertilizer; Maestría; EDAR; Estrategias para el Desarrollo Agrícola Regional. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/335 |
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| Neves,Andressa C.; Bergamini,Camila N.; Leonardo,Rafaela de O.; Gonçalves,Manoel P.; Zenatti,Dilcemara C.; Hermes,Eliane. |
| ABSTRACT This study aimed to evaluate the effect of applying increasing doses of biofertilizer obtained by the anaerobic digestion of cassava effluent on the development of crambe plants. The experiment was conducted in a protected environment at the Federal University of Paraná (UFPR), Palotina Sector, between April and August 2015. A completely randomized design was used, and five different treatments with the following doses were applied in five replicates: 0, 40, 80, 120, and 160 kg ha-1 of K2O. The following parameters related to plant development were evaluated: final height, stem diameter, number of branches, dry shoot and root biomass, mass of the grains, and oil content. The 160 kg K2O ha-1 dose was found to have the best influence on the plant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilizer; Utilization of waste; Oil content. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000681 |
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| Orrico Junior,Marco Antonio Previdelli; Centurion,Stanley Ribeiro; Orrico,Ana Carolina Amorim; Sunada,Natália da Silva. |
| The objective of this study was to investigate the influence of different levels of biofertilizers from cattle and swine manure on the structural, morphogenetic and productive characteristics of Brachiaria brizantha cv. Piatã. The experiment was arranged in a completely randomized factorial design with split plots. The plots were defined by eight treatments: two biofertilizers (cattle and swine), four levels (0, 100, 200 and 300 kg N.ha-1) and subplots by four different cutting periods. The cutting for plant uniformity was performed at 45 days after sowing at 15 cm above the soil surface. The biofertilizeres were applied in a single level, after the cutting of plants, in rates of 0, 0.23 and 0.19, 0.45 and 0.38, 0.68 and 0.57 liters pot-1 for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria brizantha; Forage production; Organic fertilizer; Phyllochron. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600009 |
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| Adami,Paulo Fernando; Pelissari,Adelino; Moraes,Anibal de; Modolo,Alcir José; Assmann,Tangriani Simioni; Franchin,Marcia Fernanda; Cassol,Luís César. |
| The objective of this work was to assess the effect of poultry litter fertilization levels on corn and black oat yield using different grazing intensities, poultry litter levels (mixture of manure and bedding material) and a chemical fertilization level. The experimental design was a randomized complete block in a split-plot arrangement with four replicates. Black oat + ryegrass grazing intensities, characterized by different pasture sward management, with animal entrance at 25, 30 and 35-cm heights and exit at 5.0, 10 and 15-cm heights, were established at the main plots. After the grazing period, corn was grown at the subplots with four levels of poultry litter (0, 4,953, 9,907 and 14,860 kg ha-1), aiming to supply 0, 100, 200 and 300 kg ha-1 of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avena strigosa; Zea mays; Chemical fertilizer; Organic fertilizer; Residual effect; Yield components. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000300007 |
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| Ragagnin,Vilmar Antonio; Sena Júnior,Darly Geraldo de; Dias,Danyllo Santos; Braga,Weslley Fernandes; Nogueira,Phelipe Diego Moraes. |
| Nowadays much of the chemical fertilizers used in Brazil come from imports, what creates the necessity to seek for alternative fertilizers. One possibility is organic fertilizers, including poultry litter, which presents increasing availability in various regions of the country, due to the expansion of the poultry industry. Despite its availability, there are no enough studies that show the benefits of using poultry litter on soybeans in substitution of mineral fertilizer. The present study aimed to evaluate the effect of different doses of poultry litter on leaf chlorophyll content, nodulation, and development of soybean plants. It was used a completely randomized design with five doses of poultry litter (0, 1, 2, 4 and 8 t ha-1) and a control with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilizer; Glycine max; Chlorophyll. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542013000100002 |
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| Sousa,Geocleber G. de; Rodrigues,Valdécio dos S.; Soares,Stallone da C.; Damasceno,Ítalo N.; Fiusa,Jamili N.; Saraiva,Sâmara E. L.. |
| ABSTRACT Salinity is a complex phenomenon that affects the metabolic processes of the plant, changing the physiological and biochemical parameters. In this context, the objective of this study was to evaluate the effect of irrigation water salinity on growth, biomass and gas exchanges in soybean crop in soil with and without biofertilizer. The experiment was carried out in a greenhouse at the experimental area of the Agrometeorological Station of the UFC, Fortaleza, CE, Brazil, from May to June 2016. The treatments were distributed in randomized blocks in a 5 × 2 factorial scheme, corresponding to the levels of irrigation water salinity: 0.8; 1.6; 2.4; 3.2 and 4.0 dS m-1, in soil without and with bovine biofertilizer, in five replicates. The following... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilizer; Saline stress; Photosynthesis. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000900604 |
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| Menezes,June F. S.; Silva,Mariana P. da; Caetano,Jeander O.; Cantão,Veridiana C. G.; Benites,Vinícius de M.. |
| ABSTRACT Organic wastes produced in large quantities in pig farms, such as liquid swine manure (LSM), can become a good alternative source of nutrients for agriculture, thus enabling total or partial replacement of mineral fertilizers in agricultural crops. The aim of this study was to evaluate the use of LSM as a substitute of mineral fertilizer in the maize crop under Cerrado soil conditions. The treatments consisted of using mineral fertilization recommended for the maize crop; without fertilization; and LSM doses (25, 50,100 and 200 m3 ha-1). Maize grain yield was evaluated in the 2004/2005, 2005/2006, 2006/2007, 2007/2008, 2009/2010, 2011/2012 and 2013/2014 crop seasons. The mineral fertilization in maize can be replaced by pig slurry doses from 100... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic fertilizer; Sustainable waste disposal; Swine. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001000686 |
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| Eckhardt,Daniel Pazzini; Redin,Marciel; Jacques,Rodrigo Josemar Seminoti; Lorensini,Felipe; Santos,Marcos Leandro dos; Weiler,Douglas Adams; Antoniolli,Zaida Inês. |
| ABSTRACT: This research aimed to evaluate the mineralization of nitrogen (N) and to define the efficiency index (EI) of N after the addition of organic fertilizers based on cattle manure on the soil under laboratory conditions. A completely randomized statistical design with four replicates was used. The treatments were set as follows: T1) Soil (control); T2) Soil + vermicompost of cattle manure (CMV); T3) Soil + cattle manure and straw compost (CMS); and T4) Soil + cattle manure (CM). Experimental units were constituted by acrylic flasks with 5 x 5cm (height x diameter). Each flask was added with 135g of wet soil and 2.20, 2.45 and 2.27g of CMV, CMS and CM, respectively. Treatments were incubated at 25°C and the amount of mineral N from the soil (N-NH4+... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Vermicompost; Organic fertilizer; Cattle manure; Composting. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000300472 |
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| Campos,Alessandro T.; Veloso,Alessandro V.; Silva,Enilson B.; Yanagi Júnior,Tadayuki; Mattioli,Matheus C.. |
| The goal of this study was to evaluate the nitrogen fertilization as deep litter for pigs in order to produce biomass and accumulate nutrients by the corn. A deep litter made of rice husk as organic compound, from a commercial pig farm during finishing phase, was used. After three consecutive batches of pigs, the deep litter was subjected to a maturation period of 50 days, and samples of this material were taken for analysis of agronomic value. The experimental design was completely randomized with five replicates. The treatments consisted of doses of 0, 75, 150 and 300mg dm-3 of N of deep litter, as well as an additional treatment with ammonium sulfate, with a dosage of 150mg dm-3 of N. After 45 days, corn plants were harvested in order to evaluate the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pig farming; Pig facilities; Alternative management; Waste treatment; Organic fertilizer; Zea mays. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000600018 |
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| Registros recuperados: 38 | |
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