|
|
|
| Registros recuperados: 490 | |
|
| |
|
|
| Vázquez,Eva Vidal; Bertol,Ildegardis; Siqueira,Glécio Machado; Paz-Ferreiro,Jorge; Dafonte,Jorge Dafonte. |
| The objective of this work was to investigate the decay of initial surface roughness induced by simulated rainfall under different soil residue cover and to compare classical statistical indices with geostatistical parameters. A conventionally tilled loamy soil with low structure stability, thus prone to crusting was placed at 1 m² microplots. Each microplot received three successive rainfall events which bring about cumulative 25 mm, 50 mm and 75 mm at 65 mm h-1 intensity. Five treatments without replication were tested with different corn straw quantities (0, 1, 2, 3 and 4 Mg ha"1). Soil surface microrelief was measured at the initial stage and after each simulated rainfall event. Five treatments and four surface stages were monitored, resulting in 20... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil tillage; Roughness index; Surface microrelief; Simulated rain. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052010000500015 |
| |
|
|
| Lange,Denise; Fernandes,Wedson Desidério; Raizer,Josué; Faccenda,Odival. |
| This study had the objective of assessing the differences in foraging activity of the predacious ants between two areas, one conventional and other with no-till agriculture systems. The research was conducted in two contiguous 1.5 ha plots in Dourados MS, Brazil, from February 2001 to December 2003. Each plot received 750 baits (Nasutitermes termites), 425 at daylight and 325 at night. The termites were placed on the filter paper, on the ground, and ant attack was monitored for 15 min, until removed. Sixteen ant species were found in the no-till system and nine in the conventional system. Baits removed from no-till were significantly higher than the conventional plots and were influenced by the sampling time, at day or night. The seasons of the year did... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agroecosystems; Biological control; Community structure; Soil tillage; Species richness; Predation effects. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132008000600015 |
| |
|
| |
|
|
| Cortez,Jorge W.; Pusch,Maiara; Silva,Rouverson P. da; Rufino,Mauricio V.; Anghinoni,Matheus. |
| ABSTRACT The way the soil is managed can influence its structuring and, consequently, crop yield. Thus, this study aimed to evaluate the effect caused by the management systems plowing followed by two intermediate harrowing operations, intermediate harrowing, chiseling, chiseling followed by intermediate harrowing, cross chiseling followed by intermediate harrowing, and non-tillage on soil and agronomic attributes of the soybean crop. A randomized block design with four replications was used. The percentage of soil cover, soil resistance to penetration, number of plants per meter, longitudinal distribution of seedlings, and soybean yield were evaluated. The data were submitted to analysis of variance by the Tukey test at 5% probability, and use of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Resistance to penetration; Geostatistics; Soil tillage. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400490 |
| |
|
|
| Teixeira,Luis G; Fukuda,Adrian; Panosso,Alan R; Lopes,Afonso; Scala Jr,Newton La. |
| Soil tillage is a process that accelerates soil organic matter decomposition transferring carbon to atmosphere, mainly in the CO2 form. In this study, the effect of rotary tillage on soil CO2 emission was investigated, including the presence of crop residues on the surface.Emissions were evaluated during 15 days after tillage in 3 plots: 1) non-tilled and without crop residues on soil surface (NTwo), 2) rotary tiller without the presence of crop residues on soil surface (RTwo), and 3) rotary tiller with the presence of crop residues in soil surface (RTw). Emissions from the RTw plot were higher than the other plots, (0.777 g CO2 m-2 h-1), with the lowest emissions recorded in the NTwo plot (0.414 g CO2 m-2 h-1). Total emission indicates that the difference... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil respiration; Soil tillage; Carbon dioxide; Temporal variability of soil CO2 emission. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000600005 |
| |
|
|
| Melo,Mariana C.; Tavares,Laene F.; Oliveira,Thaísa F.; Silva,Rodrigo R.; Carvalho Filho,Alberto. |
| ABSTRACT: The effects of natural weathering and different managements performed in agriculture may best be understood by studying the soil roughness. The aim of this study was to evaluate the optimization of the use of pin microrelief meter, an instrument used to determine the soil surface roughness, as the number of readings collected over traditional methodology proposed in the bibliography. The study was conducted in Rio Paranaiba (MG), in a Haplustox soil. The experimental design was completely randomized in a 2×3 factorial design with four replications. There were combined two types of primary tillage: conventional tillage with disc plow (PCAD) and harrow (PCGA), and three amounts of readings (100, 200, and 300 reading points) sampled in each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mobilization; Pin microrelief meter; Roughness; Soil tillage. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000501056 |
| |
|
| |
|
|
| Duarte, Edivânia Maria Gourete. |
| Os sistemas agro florestais são efetivos em melhorar e conservar a qualidade do solo. As árvores presentes nestes sistemas absorvem nutrientes de camadas profundas do solo e aportam continuamente material orgânico, gerando impactos à superfície e abaixo da superfície do solo. O objetivo deste trabalho foi estudar características envolvidas na cidagem de nutrientes de espécies arbóreas, visando contribuir para a formulação de estratégias de manejo de sistems agroflorestais. As espécies selecionadas para o estudo foram o ipê-preto (Zeyheria tuberculosa), o açoita-cavalo (Luehea grandiflora), o mulungu (Erythrina verna), o fedegoso (Senna macranthera), o ingá (Ingá subnuda), o papagaio (Aegiphila sellowiana) e o abacate (Persea americana). A produção de... |
| Tipo: Thesis |
Palavras-chave: Farm economics; Nutrient turnover; Social aspects; Soil tillage; Farm nutrient management. |
| Ano: 2007 |
URL: http://orgprints.org/21742/1/Duarte_Ciclagem.pdf |
| |
|
|
| Moyer, Jeff. |
| Organic farming has relied heavily on tillage for weed control while conventional no-till techniques depend entirely on herbicides for weed control and effective cover crop kill. The challenges have been how to make the benefits of no-till accessible to organic farmers. Jeff Moyer, Rodale Institute, explains how organic no-till works, using sound biological principles and mechanical cover-crop termination, to reduce and even eliminate tillage. The system works well for soybean and requires further investigation for other crops. This is an advanced technique and requires some skills to be successfully applied, but it will probably be the way to grow many field crops. |
| Tipo: Practice tool |
Palavras-chave: Soil quality; Soil biology; Soil tillage; Soil. |
| Ano: 2013 |
URL: http://orgprints.org/32591/1/Rodale_till.png |
| |
|
|
| Schleuß, Uwe. |
| Ein zentrales Problem im ökologischen Pflanzenbau ist es, die Schwierigkeiten bei der Regulierung der Unkrautflora in den Griff zu bekommen. Neben den direkten Verfahren der Unkrautregulierung (biologische, thermische oder mechanische Maßnahmen), kommen im ökologischen Landbau vor allem indirekten Maßnahmen eine besondere Bedeutung zu. Neben der Fruchtfolge sind weitere indirekte Unkrautregulierungsmaßnahmen, wie Lichtentzug, Saatgutreinigung, Saatgutqualität, Bodenbearbeitung, Standraum der Kulturpflanzen und Sorteneigenschaften zu nennen. |
| Tipo: Journal paper |
Palavras-chave: Weed management; Soil tillage. |
| Ano: 2003 |
URL: http://orgprints.org/852/1/852%2Dschleu%C3%9F%2D2003%2Dunkrautregulierung%2Dbb.pdf |
| |
|
| |
|
|
| Koller, Martin. |
| Erkenntnisse aus 6 Versuchen ❯ Winterfuttererbse hat sich als Gründüngungspfl anze am besten bewährt, weil damit späte Aussaaten möglich sind ❯ Im Durchschnitt wiesen die Erbsen 156 kg Stickstoff pro ha in der Grünmasse auf ❯ Ohne zusätzliche N-Düngung erzielte der Silomais einen Ertrag von durchschnittlich 177 dt TS/ha ❯ In Ackerbaufruchtfolgen passt die Erbsen-Gründüngung gut, wenn nach Getreide eine Unkrautkur durchgeführt werden soll ❯ In Gemüsebaufruchtfolgen passen die Erbsen nach Lagerkulturen und vor Folgekulturen, die Ende Mai gepflanzt oder gesät werden ❯ Saatzeitpunkt: Anfangs Oktober (Überwinterung im 2-4 Blattstadium), Saaten bis in den Dezember möglich (Keimung Februar/März) ❯ Einarbeitung: Flaches Pflügen oder Scheibenegge... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Farm economics; Soil tillage; Air and water emissions. |
| Ano: 2011 |
URL: http://orgprints.org/18865/1/koller-2011-poster-schlatthof-fr.pdf |
| |
|
| |
|
| |
|
| |
|
| |
|
|
| Henriksen, Christian Bugge; Rasmussen, Jesper; Søgaard, Carsten. |
| In the original ridge tillage system as practiced in the US Corn Belt, ridges are formed during the growing season. Several studies have documented that this can reduce leaching of nutrients and improve fertilizer efficiency. This study was conducted to determine whether ridges formed in autumn can be used as an alternative to ploughing to reduce N leaching during autumn and winter, and thereby increase growth and N uptake of a subsequent unfertilized crop. A factorial field experiment with tillage and residues as factors was conducted during 1998-2000. Tillage treatments were autumn ridging and ploughing. Residue treatments were stubble, stubble+straw and stubble+liquid manure in order to create a gradient of C/N ratios. From the time of harvest until... |
| Tipo: Journal paper |
Palavras-chave: Nutrient turnover; Farming Systems; Soil tillage. |
| Ano: 2005 |
URL: http://orgprints.org/3952/1/3952.pdf |
| |
|
| |
|
|
| Schmidt, Harald. |
| Von 2007 bis 2008 wurden auf dreißig Feldern von fünfzehn Ökobetrieben mit reduzierter Bodenbearbeitung in drei Bodenschichten verschiedene Parameter untersucht. Acht Betriebe haben die Bodenbearbeitungstiefe deutlich reduziert, die anderen sieben Betriebe lockern den Boden krumentief mit nicht wendenden Verfahren. Im Durchschnitt wurde eine Anreicherung von organischer Substanz und von Nährstoffen in der Oberkrume festgestellt. Der Unterschied im Gehalt an organischer Substanz zwischen Ober- und Unterkrume war mit der Dauer des Bodenbearbeitungssystems positiv korreliert. Außerdem lag das Porenvolumen in der Oberkrume deutlich über dem der Unterkrume, stark korrelierte mit dem Gehalt an organischer Substanz. Die Ergebnisse bestätigen die Beobachtungen der... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Soil tillage; Soil. |
| Ano: 2011 |
URL: http://orgprints.org/17466/3/Schmidt_17466.pdf |
| |
| Registros recuperados: 490 | |
|
|
|
