|
|
|
|
|
| Gondim,Rubens S.; Serrano,Luiz A. L.; Maia,Aline de H. N.; Silva,Janderson P. da. |
| ABSTRACT Important losses of dwarf cashew seedlings during the establishment of orchards in the Brazilian semiarid are related to the relatively short rainy season. This study aimed to evaluate biochar and hydrophilic polymer as soil amendments to increase water retention and reduce plant death in the first year. An experiment was conducted at the Curu Station, Paraipaba, CE, Brazil, using the clone BRS 226. The experimental design consisted of randomized blocks, with amounts of 0.5, 1.0, 2.0, and 4.0 kg of cashew wood biochar and 20, 40, 60, 80 g of hydrophilic polymer applied per pit, as well as a control treatment (no soil amendment). Seedlings were submitted to an irrigation regime to avoid water stress (5 L water seedling−1 when the tensiometer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium occidentale L.; Climate change; Adaptation; Soil amendment; Biochar. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300344 |
| |
|
| |
|
|
| Carvalho,Márcia Thaís de Melo; Madari,Beáta Emoke; Bastiaans,Lammert; Oort,Pepijn Adrianus Johannes van; Leal,Wesley Gabriel de Oliveira; Souza,Diego Mendes de; Santos,Roberto Carlos dos; Matsushige,Iva; Maia,Aline de Holanda Nunes; Heinemann,Alexandre Bryan; Meinke,Holger. |
| Abstract The objective of this work was to investigate the impact of the application of wood biochar, combined with N fertilizations, on N2O-N fluxes, nitrogen availability, and water-filled pore space (WFPS) of a clayey Oxisol under rice (wet season) and common bean (dry season) succession. Manual static chambers were used to quantify N2O-N fluxes from soil immediately after a single application of wood biochar (32 Mg ha-1) and after four crop seasons with N applications (90 kg ha-1 N). Soil ammonium (N-NH4+) and nitrate (N-NO3-) availability, as well as WFPS, was measured together with N2O-N fluxes. There was no interaction between biochar and N fertilization regarding N2O-N fluxes in any of the four seasons monitored, although these fluxes were clearly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cropping systems; Gas fluxes; Greenhouse gases; Nitrate and ammonium; Soil amendment; Soil porosity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000901203 |
| |
|
|
| JAVAID,A.; KHAN,I.H.; SHOAIB,A.. |
| ABSTRACT: A pot experiment was carried out to check the effect of Coronopus didymus (L.) Sm. dry biomass application (1%, 2% and 3% w/w) and two species of Trichoderma (T. viride and T. aureoviride) on growth and physiology of mungbean [Vigna radiata (L.) WIlczek] under biotic stress of Macrophomina phaseolina (Tassi) Goid. Inoculation of M. phaseolina (positive control) reduced plant survival, shoot and root length as well as plant dry biomass by 22%, 52%, 61% and 64%, respectively, over the negative control (without any amendment). There was 100% plant survival in treatments with T. aureoviride alone or in combination with 1% and 2% C. didymus biomass. Likewise, T. viride in combination with 2% biomass also showed 100% plant survival. Application of 3%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Soil amendment; Swinecress; Vigna radiata. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100323 |
| |
|
|
| Silva,Douglas Ramos Guelfi; Marchi,Giuliano; Spehar,Carlos Roberto; Guilherme,Luiz Roberto Guimarães; Rein,Thomaz Adolpho; Soares,Danilo Araújo; Ávila,Fabrício William. |
| The expansion of Brazilian agriculture has led to a heavy dependence on imported fertilizers to ensure the supply of the growing food demand. This fact has contributed to a growing interest in alternative nutrient sources, such as ground silicate rocks. It is necessary, however, to know the potential of nutrient release and changes these materials can cause in soils. The purpose of this study was to characterize six silicate rocks and evaluate their effects on the chemical properties of treated soil, assessed by chemical extractants after greenhouse incubation. The experimental design consisted of completely randomized plots, in a 3 x 6 factorial scheme, with four replications. The factors were potassium levels (0-control: without silicate rock... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multi-nutrient fertilizer; Nutrient available; Potassic rock; Rock powder; Soil amendment. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000300025 |
| |
|
|
| Silva,Aldeir R.; Bezerra,Francisco T. C.; Cavalcante,Lourival F.; Pereira,Walter E.; Araújo,Leandro M.; Bezerra,Marlene A. F.. |
| ABSTRACT The objective of this work was to evaluate the growth of sugar-apple seedlings under irrigation management with saline water in a substrate with soil amendment. Treatments were obtained from the arrangement between polymer doses (0, 0.2, 0.6, 1.0 and 1.2 g dm-3) and levels of irrigation water electrical conductivity (0.3, 1.1, 2.7, 4.3 and 5.0 dS m-1), associated with irrigation frequencies (daily and every alternate day), and two additional treatments to evaluate container volume (1.30 and 0.75 dm3), using a randomized complete block design, with four replicates. At 120 days after sowing, the variables substrate salinity, stem diameter, plant height, number of leaves and Dickson quality index were determined. Data were submitted to analyses of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annona squamosa; Soil amendment; Container volume; Seedling quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018001200825 |
| |
|
| |
|
|
| Stamford, Newton Pereira; Universidade Federal Rural de Pernambuco; Silva Junior, Sebastião da; Universidade Federal Rural de Pernambuco; Santos, Carolina Etienne de Rosália e Silva; Universidade Federal Rural de Pernambuco; Freitas, Ana Dolores Santiago de; Universidade Federal Rural de Pernambuco; Lira junior, Mário de Andrade; Universidade Federal Rural de Pernambuco; Barros, Maria de Fátima Cavalcanti; Universidade Federal Rural de Pernambuco. |
| Sodic soils require application of amendments as gypsum and organic matter. Many types of compost have been tested in sodic soils reclamation; however, these materials often do not provide satisfactory pH reduction. A recent study reported effective effects applying mixture of gypsum and sulfur inoculated with Acidithiobacillus in sodic soils with high pH and exchangeable sodium, though the effects on plant parameters were not evaluated. The present study was conducted to verify the effects of BPK rock biofertilizers on nodulation, biomass yield and nutrient uptake in cowpea compared with mineral fertilizer after sodic soil amendment. The BPK biofertilizers and PK mineral fertilizer were applied at different rates, and plants were inoculated with effective... |
| Tipo: Pesquisa em casa de vegetação |
Palavras-chave: Soil salinity Sodic soil Nitrogen fixation Vigna unguiculata; Soil amendment; Sulfur-gypsum interaction; Sulfur oxidation; Sulfur oxidizing bacteria. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16994 |
| |
|
|
| Suppadit,Tawadchai; Kitikoon,Viroj; Phubphol,Anucha; Neumnoi,Penthip. |
| Biochar can improve soil structure and water retention, enhance nutrient availability and retention, ameliorate acidity, and reduce heavy metal toxicity to plant roots. In this study, a basin experiment was conducted to investigate the effects of quail litter biochar (QLB) on the availability of Cd to physic nut (Jatropha curcas L.) plants. QLB was applied to the soil in which four new physic nut varieties (Takfa, Doi Saket, Lao, and Rayong) in factorial combinations at four levels (0, 5, 10, and 15 g kg-1 soil) to soil that contained 60.8 mg Cd kg-1. After transplanting plant height and canopy radius were measured every 2-mo and the number of leaves and branches at 6-mo, while yield components and Cd residues were measured at 8-mo intervals. The... |
| Tipo: Journal article |
Palavras-chave: Adsorption; Heavy metal; Phytoremediation; Plant production; Pyrolysis; Soil amendment. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000100020 |
| |
|
|
|
