Minimum Tillage on an Eroded Geary‐Like Soil 1

1966 ◽  
Vol 58 (2) ◽  
pp. 241-242
Author(s):  
K. W. Snelling ◽  
J. A. Hobbs
Keyword(s):  
Minimum Tillage

Infiltration and Erosion as Affected by Minimum Tillage for Corn (Zea mays L.)

1966 ◽  
Vol 30 (1) ◽  
pp. 101-105 ◽  
Author(s):  
J. V. Mannering ◽  
L. D. Meyer ◽  
C. B. Johnson
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Minimum Tillage

scholarly journals EFFECT OF SOIL TILLAGE AND PLANT RESIDUE ON SURFACE ROUGHNESS OF AN OXISOL UNDER SIMULATED RAIN

2015 ◽  
Vol 39 (1) ◽  
pp. 268-278 ◽  
Author(s):  
Elói Panachuki ◽  
Ildegardis Bertol ◽  
Teodorico Alves Sobrinho ◽  
Paulo Tarso Sanches de Oliveira ◽  
Dulce Buchala Bicca Rodrigues
Keyword(s):  
Surface Roughness ◽  
Soil Surface ◽  
Conventional Tillage ◽  
Plant Residue ◽  
Soil Tillage ◽  
No Tillage ◽  
Maize Crop ◽  
Minimum Tillage ◽  
Roughness Index ◽  
Simulated Rain

Surface roughness of the soil is formed by mechanical tillage and is also influenced by the kind and amount of plant residue, among other factors. Its persistence over time mainly depends on the fundamental characteristics of rain and soil type. However, few studies have been developed to evaluate these factors in Latossolos (Oxisols). In this study, we evaluated the effect of soil tillage and of amounts of plant residue on surface roughness of an Oxisol under simulated rain. Treatments consisted of the combination of the tillage systems of no-tillage (NT), conventional tillage (CT), and minimum tillage (MT) with rates of plant residue of 0, 1, and 2 Mg ha-1 of oats (Avena strigosa Schreb) and 0, 3, and 6 Mg ha-1 of maize (Zea mays L.). Seven simulated rains were applied on each experimental plot, with intensity of 60±2 mm h-1 and duration of 1 h at weekly intervals. The values of the random roughness index ranged from 2.94 to 17.71 mm in oats, and from 5.91 to 20.37 mm in maize, showing that CT and MT are effective in increasing soil surface roughness. It was seen that soil tillage operations carried out with the chisel plow and the leveling disk harrow are more effective in increasing soil roughness than those carried out with the heavy disk harrow and leveling disk harrow. The roughness index of the soil surface decreases exponentially with the increase in the rainfall volume applied under conditions of no tillage without soil cover, conventional tillage, and minimum tillage. The oat and maize crop residue present on the soil surface is effective in maintaining the roughness of the soil surface under no-tillage.

Recovery of Nitrogen (15N) by Sugarcane from Previous Crop Residues and Urea Fertilisation Under a Minimum Tillage System

Sugar Tech ◽  
2011 ◽  
Vol 13 (1) ◽  
pp. 42-46 ◽  
Author(s):  
C. Fortes ◽  
P. C. O. Trivelin ◽  
A. C. Vitti ◽  
D. A. Ferreira ◽  
H. C. J. Franco ◽  
...  
Keyword(s):  
Crop Residues ◽  
Minimum Tillage ◽  
Previous Crop ◽  
Tillage System

Crop Rotation and Minimum Tillage

Agroecology ◽  
2018 ◽  
pp. 233-246
Author(s):  
Miguel A. Altieri ◽  
John G. Farrell ◽  
Susanna B. Hecht ◽  
Matt Liebman ◽  
Fred Magdoff ◽  
...  
Keyword(s):  
Crop Rotation ◽  
Minimum Tillage

scholarly journals Soil preparation and nutrient losses by erosion in the culture cucumber

2005 ◽  
Vol 62 (6) ◽  
pp. 572-577 ◽  
Author(s):  
Nelson Moura Brasil do Amaral Sobrinho ◽  
Nelson Mazur
Keyword(s):  
Crop Residues ◽  
Total Concentration ◽  
Organic Matter Content ◽  
Soil Surface ◽  
Crop Productivity ◽  
Matter Content ◽  
Nutrient Losses ◽  
Cucumis Sativus L ◽  
Minimum Tillage ◽  
Fine Sediments

Minimum tillage reportedly reduce erosion, avoid soil degradation and improve crop productivity. This study aimed to determine how tillage operations may affect either nutrient accumulation or nutrient losses by erosion. The study was, carried out from December, 2000 to March, 2001, in the watershed of the Caetés River, in Rio de Janeiro State, Brazil (22º25'43"S, 43º25'07"W). The experiment was set up in sandy clay Kandiudult soil, 60% slope, under cucumber (Cucumis sativus L.) crop. Soil samples were collected before planting and after harvest, on 22.0 X 4.0 m Greeoff plots. After each rainfall, fine sediments carried by runoff were deposited into two collecting tanks in a row, installed at the end of each plot, and were later dried, weighed and stored for analyses. Treatments (n = 4) were characterized by different tillage systems: (i) downhill plowing followed by the burning of crop residues (DPB); (ii) downhill plowing with no burning of the crop residues (DPNB); (iii) animal traction contour plowing, with strips of guinea grass planted at a spacing of 7.0 m (AT); and (iv) minimum tillage (MT). Samples of the soil-plowed layer were collected before planting and after harvest, between the rows and from the plants. Total concentration of Ca, Mg, K and P were determined after extraction with nitric perchloride digestion. Labile P and exchangeable K were extracted with the Mehlich 1 extractant solution. The MT system reduced losses of both exchangeable bases (15%) and P (8%), and affected the distribution of labile and organic P. Crop residues left on soil surface in the MT system, resulted in increased organic matter content. Downhill plowing, the most used tillage operation in the region, resulted in the greatest losses of Ca, Mg, K, and P.

scholarly journals EMISSÃO DE CO2, ATRIBUTOS FÍSICOS E CARBONO ORGÂNICO TOTAL EM DIFERENTES SISTEMAS DE PREPARO DO SOLO

Nativa ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 494
Author(s):  
Carla Da Penha Simon ◽  
Edney Leandro da Vitória ◽  
Elcio Das Graça Lacerda ◽  
Yago Soares Avancini ◽  
Tatiana Fiorotti Rodrigues ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Total Organic Carbon ◽  
Co2 Emission ◽  
Conventional Tillage ◽  
No Tillage ◽  
Minimum Tillage ◽  
Soil Preparation ◽  
Physical Attributes ◽  
The Mean ◽  
Box Plot

Objetivou-se quantificar o CO2,atributos químicos e físicos do solo são influenciados por diferentes manejos de preparo do solo. O Delineamento experimental adotado foi inteiramente casualizado, sendo os tratamentos: Sistema de Plantio Direto (SPD), Cultivo Mínimo e Preparo Convencional (PC), e como referência: área de vegetação nativa (Mata), contando com seis repetições cada variável de estudo. Além da comparação por teste médias, foi realizada uma análise exploratória das leituras nos sistemas de preparo do solo, onde o CO2 foi traduzido graficamente num diagrama o box-plot. As variáveis avaliadas foram: CO2 obtido por meio de um analisador de gás infravermelho; os atributos físicos do solo: Densidade do solo (Ds), Volume Total de Poros (VTP), Macroporosidade (Ma), Microporosidade (Mi), Resistência a Penetração do solo (RPS) e o atributo químico: carbono orgânico total (COT). O fluxo CO2 do solo apresentou diferença significativa entre o SPD e o PC; valores médios encontrados para SPD, CM, Mata e PC foram 2,30; 2,25; 2,18; e 1,39 μmolCO2m−2 s−1, respectivamente; o COT apresentou seu maior valor na área de Mata (32,95 gkg-1) diferindo estatisticamente das demais áreas. Observou-se uma menor emissão de CO2 do solo no PC, pois o sistema apresenta baixo aporte de carbono orgânico.Palavras-chave: sistema de preparo convencional; cultivo mínimo; preparo convencional; carbono orgânico total. CO2 EMISSION, PHYSICAL ATTRIBUTES AND TOTAL ORGANIC CARBON IN DIFFERENT SOIL PREPARATION SYSTEMS ABSTRACT: The objective was to quantify the CO2, chemical and physical attributes of the soil are influenced by different management of soil preparation. The experimental design was completely randomized, with the treatments: no-tillage (NT), minimum tillage (MT) and conventional tillage (CT), and as reference:  native forest (NF), with six replicates each study variable. In addition to the mean test comparison, an exploratory analysis of the readings was performed in the soil preparation systems, where CO2 was graphically translated into a box-plot diagram. The variables evaluated were: CO2 obtained by means of a infrared gas analyzer; density (Bd), total pore volume (TPV), macroporosity (Ma), microporosity (Mi), resistance to soil penetration (RSP) and chemical attribute: total organic carbon (TOC). The CO2 soil flux presented a significant difference between NT and CT; where respectively the mean values found for SPD, CM, Mata and PC were 2.30; 2.25; 2.18; and 1.39 μmolCO2m-2s-1; the COT had its highest value in the Mata area (32.95 gkg-1), differing statistically from the other areas. It was observed a lower CO2 emission of the soil in the PC, because the system has low input of organic carbon.Keywords: no-tillage; conventional tillage; minimum tillage; total organic carbon.

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